Abstract

A spring-operated relief valve can include a biasing assembly, a valve inlet, a valve seat, a disc assembly that is biased toward the valve seat by the biasing assembly, and a disc insert secured to the disc holder. The disc insert can include a body, a sealing surface to seal against the valve seat, and a groove formed in the sealing surface of the disc insert, the groove to operate as a fluid guide to divert a portion of fluid flow during a relief event into the groove. The disc holder can extend past the sealing surface of the disc insert to direct fluid flow during a relief event.

IPC Classes  ?

• F16K 17/04 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded
• F16K 15/06 - Check valves with guided rigid valve members with guided stems

Abstract

A spring-operated relief valve can include a main spring positioned between a bottom spring seat and a top spring seat. A seat assembly can include a valve seat, a seat retainer, and a spindle. The valve seat and the spindle can be received within an inner bore of the seat retainer and the spindle and the seat retainer can be threadably coupled. The valve seat can extend partially through the seat retainer to form a seal with a nozzle of the spring-operated relief valve and the spindle can engage the bottom spring seat to compress the main spring during a valve relief event.

IPC Classes  ?

• F16K 17/04 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded

Abstract

A control system for a pressure relief valve can include a controller and an actuator. The controller can control the actuator to at least partially open a main valve of the pressure relief valve and can determine one or more operational characteristics of the pressure relief valve based on a response of the valve to the controlled movement of the actuator.

IPC Classes  ?

• F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
• F16K 17/04 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded
• F16K 31/40 - Operating meansReleasing devices actuated by fluid in which fluid from the conduit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor
• F15B 13/02 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
• F15B 19/00 - Testing fluid-pressure actuator systems or apparatus, so far as not provided for elsewhere

Abstract

A spring-operated relief valve can include an adjustable main spring to bias the valve closed and a load cell that is configured to measure a force exerted by the main spring. Measurements from the load cell can be used to determine a set or crack pressure in the spring-operated relief valve, and to monitor operation of the spring-operated relief valve.

IPC Classes  ?

• F16K 17/06 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
• F16K 17/04 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded
• F16K 17/10 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve

Abstract

A sensing arrangement for a relief valve having a valve body can include a valve body engagement member and a first sensor. The valve body engagement member can be secured to the valve body proximate to a valve seat of the relief valve. The first sensor can be in communication with the valve seat via the valve body engagement member. The first sensor can be configured to detect a valve event via detection of localized pressure changes at the valve seat.

IPC Classes  ?

• F16K 17/04 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded
• F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given

Abstract

A sensing arrangement for a relief valve having a valve body can include a valve body engagement member and a first sensor. The valve body engagement member can be secured to the valve body proximate to a valve seat of the relief valve. The first sensor can be in communication with the valve seat via the valve body engagement member. The first sensor can be configured to detect a valve event via detection of localized pressure changes at the valve seat.

IPC Classes  ?

• F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
• F16K 17/06 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure

Abstract

A spring-operated relief valve (100) can include a biasing assembly (114), a valve inlet, a valve seat (110), and a disc assembly that is biased toward the valve seat by the biasing assembly. A fluid guide, such as a groove or chamber, can be formed at the interface between the valve seat and the disc assembly. The fluid guide can be configured to direct fluid that flows across the valve seat to provide an upward force on the disc assembly during a relief event.

IPC Classes  ?

• F16K 17/04 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded

Abstract

A spring-operated relief valve can include a biasing assembly, a valve inlet, a valve seat, and a disc assembly that is biased toward the valve seat by the biasing assembly. A fluid guide, such as a groove or chamber, can be formed at the interface between the valve seat and the disc assembly. The fluid guide can be configured to direct fluid that flows across the valve seat to provide an upward force on the disc assembly during a relief event.

IPC Classes  ?

• F16K 17/04 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded
• F16K 15/06 - Check valves with guided rigid valve members with guided stems

Abstract

A spring-operated relief valve (100) can include a biasing assembly (114), a valve inlet, a valve seat (110), and a disc assembly that is biased toward the valve seat by the biasing assembly. A fluid guide, such as a groove or chamber, can be formed at the interface between the valve seat and the disc assembly. The fluid guide can be configured to direct fluid that flows across the valve seat to provide an upward force on the disc assembly during a relief event.

IPC Classes  ?

• F16K 17/04 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded

Abstract

A diaphragm assembly for a pressure relief valve can include a disc guide that is configured to receive a portion of a disc holder, a bonnet adapter, and a diaphragm that is clamped at an outer edge between the disc guide and the bonnet adapter. The diaphragm assembly can be positioned between a bonnet of the pressure relief valve and a valve body of the pressure relief valve to convert the pressure relief valve to a backpressure-balanced pressure relief valve by counterbalancing a backpressure that acts upon the disc holder.

IPC Classes  ?

• F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
• F16K 17/08 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded with special arrangements for providing a large discharge passage
• G01M 3/28 - Investigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables, or tubesInvestigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipe joints or sealsInvestigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for valves

Abstract

A pilot-operated relief valve assembly can include a relief valve, and a pressure detection assembly. A valve lift factor or indicator of relief flow can be determined based on pressure measurements gathered by the pressure detection assembly.

IPC Classes  ?

• F16K 17/10 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve
• F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
• F16K 17/02 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side
• G01F 1/36 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
• F16K 31/363 - Operating meansReleasing devices actuated by fluid in which fluid from the conduit is constantly supplied to the fluid motor the fluid acting on a piston
• G01F 1/40 - Details of construction of the flow constriction devices
• G01F 1/38 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction the pressure or differential pressure being measured by means of a movable element, e.g. diaphragm, piston, Bourdon tube or flexible capsule
• F16K 31/06 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a magnet

Abstract

A clamp assembly (106) to secure a yoke (104) to a valve body (102) of a knife gate valve (100) is provided. The clamp assembly can include a bolt (164) that is configured to extend through a first bushing (166), a first spring member (170), a first side wall of the yoke (134a; 134b), the valve body (102), a second side wall (136a; 136b) of the yoke, a second spring member (172), and a second bushing (168). The clamp assembly can be configured to pin the yoke to the valve body, apply a pressure-containing preload to the valve body via the first and second bushings, and compress the first spring member between the first bushing and the first side wall of the yoke and the second spring member between the second bushing and the second side wall of the yoke.

IPC Classes  ?

• F16K 3/02 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing facesPackings therefor
• F16K 27/04 - Construction of housingsUse of materials therefor of sliding valves
• F16K 27/08 - Guiding yokes for spindlesMeans for closing housingsDust caps, e.g. for tyre valves

Abstract

A clamp assembly (106) to secure a yoke (104) to a valve body (102) of a knife gate valve (100) is provided. The clamp assembly can include a bolt (164) that is configured to extend through a first bushing (166), a first spring member (170), a first side wall of the yoke (134a; 134b), the valve body (102), a second side wall (136a; 136b) of the yoke, a second spring member (172), and a second bushing (168). The clamp assembly can be configured to pin the yoke to the valve body, apply a pressure-containing preload to the valve body via the first and second bushings, and compress the first spring member between the first bushing and the first side wall of the yoke and the second spring member between the second bushing and the second side wall of the yoke.

IPC Classes  ?

• F16K 3/02 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing facesPackings therefor
• F16K 27/04 - Construction of housingsUse of materials therefor of sliding valves
• F16K 27/08 - Guiding yokes for spindlesMeans for closing housingsDust caps, e.g. for tyre valves

Abstract

A clamp assembly to secure a yoke to a valve body of a knife gate valve is provided. The clamp assembly can include a bolt that is configured to extend through a first bushing, a first spring member, a first side wall of the yoke, the valve body, a second side wall of the yoke, a second spring member, and a second bushing. The clamp assembly can be configured to pin the yoke to the valve body, apply a pressure-containing preload to the valve body via the first and second bushings, and compress the first spring member between the first bushing and the first side wall of the yoke and the second spring member between the second bushing and the second side wall of the yoke.

IPC Classes  ?

• F16K 3/316 - Guiding of the slide
• F16K 3/02 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing facesPackings therefor
• F16K 3/312 - Line blinds
• F16K 27/04 - Construction of housingsUse of materials therefor of sliding valves

Goods & Services

Downloadable software for measuring, selecting, configuring and reporting for all types of pressure relief devices, pressure regulators, flame arresters, tank vents and automatic recirculation control valves in industrial applications.

Abstract

An illumination system can be configured for use with a liquid level gauge. A mounting bracket can be configured to secure a LED assembly to a frost-proof extension of the liquid level gauge, with the LED assembly disposed adjacent to a second edge face of the frost-proof extension that is opposite a liquid tube. The LED assembly can be thereby configured to illuminate the liquid tube via the second edge face of the frost-proof extension.

IPC Classes  ?

• G01F 23/02 - Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by gauge glasses or other apparatus involving a window or transparent tube for directly observing the level to be measured or the level of a liquid column in free communication with the main body of the liquid
• G01F 23/292 - Light

Goods & Services

Downloadable software for measuring, selecting, configuring and reporting for all types of pressure relief devices, pressure regulators, flame arresters, tank vents and automatic recirculation control valves in industrial applications

Abstract

A clamp assembly to secure a yoke to a valve body of a knife gate valve is provided. The clamp assembly can include a bolt that is configured to extend through a first bushing, a first spring member, a first side wall of the yoke, the valve body, a second side wall of the yoke, a second spring member, and a second bushing. The clamp assembly can be configured to pin the yoke to the valve body, apply a pressure-containing preload to the valve body via the first and second bushings, and compress the first spring member between the first bushing and the first side wall of the yoke and the second spring member between the second bushing and the second side wall of the yoke.

IPC Classes  ?

• F16K 3/02 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing facesPackings therefor
• F16K 3/316 - Guiding of the slide
• F16K 3/312 - Line blinds
• F16K 27/04 - Construction of housingsUse of materials therefor of sliding valves

Abstract

A control system for a pressure relief valve can include a controller and an actuator. The controller can control the actuator to at least partially open a main valve of the pressure relief valve and can determine one or more operational characteristics of the pressure relief valve based on a response of the valve to the controlled movement of the actuator.

IPC Classes  ?

• F15B 20/00 - Safety arrangements for fluid actuator systemsApplications of safety devices in fluid actuator systemsEmergency measures for fluid actuator systems
• F16K 15/18 - Check valves with actuating mechanismCombined check valves and actuated valves
• F16K 17/10 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve
• F16K 17/30 - Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
• F16K 31/122 - Operating meansReleasing devices actuated by fluid the fluid acting on a piston
• F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given

Abstract

A control system for a pressure relief valve can include a controller and an actuator. The controller can control the actuator to at least partially open a main valve of the pressure relief valve and can determine one or more operational characteristics of the pressure relief valve based on a response of the valve to the controlled movement of the actuator.

IPC Classes  ?

• F15B 20/00 - Safety arrangements for fluid actuator systemsApplications of safety devices in fluid actuator systemsEmergency measures for fluid actuator systems
• F16K 15/18 - Check valves with actuating mechanismCombined check valves and actuated valves
• F16K 17/10 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve
• F16K 17/30 - Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
• F16K 31/122 - Operating meansReleasing devices actuated by fluid the fluid acting on a piston
• F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given

Abstract

A knife gate valve (100) can include a body structure (102) that includes a gate passage (116), a gate (104; 204; 304) disposed to move within the gate passage between open and closed positions to selectively open or close a fluid aperture (108), and a gate seat (112; 212; 312) configured to engage a free end (148, 248) and lateral edges (192; 292; 392) of the gate. A transverse element (114; 206; 306) can be formed from resilient material and can extend laterally across the gate passage to form a seal with a first side (190; 290; 390) of the gate and with the gate seat (112; 212; 312).

IPC Classes  ?

• F16K 3/02 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing facesPackings therefor
• F16K 27/04 - Construction of housingsUse of materials therefor of sliding valves

Abstract

A knife gate valve (100) can include a body structure (102) that includes a gate passage (116), a gate (104; 204; 304) disposed to move within the gate passage between open and closed positions to selectively open or close a fluid aperture (108), and a gate seat (112; 212; 312) configured to engage a free end (148, 248) and lateral edges (192; 292; 392) of the gate. A transverse element (114; 206; 306) can be formed from resilient material and can extend laterally across the gate passage to form a seal with a first side (190; 290; 390) of the gate and with the gate seat (112; 212; 312).

IPC Classes  ?

• F16K 3/02 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing facesPackings therefor
• F16K 27/04 - Construction of housingsUse of materials therefor of sliding valves

Abstract

Embodiments of the invention provide a knife gate valve for flow along a flow path. The knife gate valve can include a body structure that includes a gate passage, a gate disposed to move within the gate passage between open and closed positions to selectively open or close a fluid aperture, and a gate seat configured to engage a free end and lateral edges of the gate. A transverse element can be formed from resilient material and can extend laterally across the gate passage to form a seal with a first side of the gate and with the gate seat.

IPC Classes  ?

• F16K 3/02 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing facesPackings therefor
• F16K 25/00 - Details relating to contact between valve members and seats
• F16K 27/04 - Construction of housingsUse of materials therefor of sliding valves

Abstract

A back pressure balanced relief valve can include a piston, a pressure balancing device, and a pressure sensor. A pressure chamber can be created between the pressure balancing device and the piston. The pressure sensor can be configured to monitor the pressure in the pressure chamber for indications of a potential failure of the balancing device.

IPC Classes  ?

• F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
• F16K 17/08 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded with special arrangements for providing a large discharge passage
• G01M 3/28 - Investigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables, or tubesInvestigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipe joints or sealsInvestigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for valves

Abstract

A back pressure balanced relief valve system (200, 300) for detecting a potential failure in a relief valve comprising: a piston (216); a balancing device (224, 232, 332) that includes one of a pressure¬ balancing bellows (224) or a pressure-balancing diaphragm (232, 332) and defines a first pressure chamber (228, 248, 348) between the piston (216) and the balancing device (224, 232, 332); and a pressure port in fluid communication with the first pressure chamber (228, 248, 348), the pressure port configured to receive or be in fluid communication with a pressure sensor (240) for the pressure sensor (240) to monitor the pressure in the first pressure chamber (228, 248, 348) for indications of a potential failure of the balancing device (224, 232, 332).

IPC Classes  ?

• F16K 17/04 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded
• F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given

Abstract

A back pressure balanced relief valve system (200, 300) for detecting a potential failure in a relief valve comprising: a piston (216); a balancing device (224, 232, 332) that includes one of a pressure¬ balancing bellows (224) or a pressure-balancing diaphragm (232, 332) and defines a first pressure chamber (228, 248, 348) between the piston (216) and the balancing device (224, 232, 332); and a pressure port in fluid communication with the first pressure chamber (228, 248, 348), the pressure port configured to receive or be in fluid communication with a pressure sensor (240) for the pressure sensor (240) to monitor the pressure in the first pressure chamber (228, 248, 348) for indications of a potential failure of the balancing device (224, 232, 332).

IPC Classes  ?

• F16K 17/04 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded
• F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given

Abstract

A spring-operated relief valve (100) comprising a valve housing (134); a valve seat (120); a disc assembly (116) configured to seal against the valve seat; a main spring (112) arranged to bias the disc assembly towards the valve seat to define a set pressure of the relief valve; and a load cell (104) that, during operation of the spring- operated relief valve, is in a fixed spatial relationship relative to the valve housing and in mechanical communication with the main spring the load cell being thereby configured to measure a force exerted by the main spring on the disc assembly as the disc assembly moves relative to the valve seat, wherein the load cell is not in mechanical communication with the disc assembly via the spindle to measure the force exerted by the main spring.

IPC Classes  ?

• F16K 17/06 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
• F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given

Abstract

A spring-operated relief valve can include an adjustable main spring to bias the valve closed and a load cell that is configured to measure a force exerted by the main spring. Measurements from the load cell can be used to determine a set or crack pressure in the spring-operated relief valve, and to monitor operation of the spring-operated relief valve.

IPC Classes  ?

• F16K 17/06 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
• F16K 17/04 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded
• F16K 17/10 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve
• F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
• G01L 5/00 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
• G01M 3/00 - Investigating fluid tightness of structures

Abstract

A flow arrangement (122) for a pressure relief valve assembly (110) can include a bypass flow path (124) extending from a pressure source (118) to a dome (114) of a relief valve (116). The bypass flow path (124) can include a valve (126) that is configured to open and close the bypass flow path (124) based on pressure at the pressure source (118) or the dome (114), or a pressure difference between the pressure source (118) and the dome (114).

IPC Classes  ?

• F16K 17/10 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve
• F16K 31/124 - Operating meansReleasing devices actuated by fluid the fluid acting on a piston servo actuated

Abstract

A flow arrangement for a valve can include a plurality of flow-control components (140, 142) that are movable relative to each other and that define at least part of a flow path from a pressure source to a dome (33) of a pressure relief valve (22). The flow-control components (140, 142) can be movable relative to each other in response to system pressure to selectively increase or decrease the flow capacity of the flow path, including during initial loading of the dome (33).

IPC Classes  ?

• F16K 17/10 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve
• F16K 31/122 - Operating meansReleasing devices actuated by fluid the fluid acting on a piston
• F16K 3/24 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
• F16K 11/048 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only lift valves with valve seats positioned between movable valve members
• F16K 1/12 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with streamlined valve member around which the fluid flows when the valve is opened
• F16K 3/26 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member
• G05D 16/16 - Control of fluid pressure with auxiliary non-electric power derived from the controlled fluid

Abstract

A flow arrangement for a control valve can include a plurality of flow-control components that are movable relative to each other and that define at least part of a flow path from a pressure source to a dome of a pressure relief valve. The flow-control components can be movable relative to each other in response to system pressure to selectively increase or decrease the flow capacity of the flow path. In some cases, flow capacity can be increased or decreased during initial loading of the dome, at low pressures, or at higher pressures.

IPC Classes  ?

• G05D 16/16 - Control of fluid pressure with auxiliary non-electric power derived from the controlled fluid
• F16K 17/32 - Excess-flow valves actuated by the difference of pressure between two places in the flow line acting on a servo-mechanism or on a catch-releasing mechanism

Abstract

A flow arrangement (122) for a pressure relief valve assembly (110) can include a bypass flow path (124) extending from a pressure source (118) to a dome (114) of a relief valve (116). The bypass flow path (124) can include a valve (126) that is configured to open and close the bypass flow path (124) based on pressure at the pressure source (118) or the dome (114), or a pressure difference between the pressure source (118) and the dome (114).

IPC Classes  ?

• F16K 31/124 - Operating meansReleasing devices actuated by fluid the fluid acting on a piston servo actuated
• F16K 15/18 - Check valves with actuating mechanismCombined check valves and actuated valves
• F16K 17/10 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve

Abstract

A flow arrangement for a pressure relief valve assembly can include a bypass flow path extending from a pressure source to a dome of a relief valve. The bypass flow path can include a valve that is configured to open and close the bypass flow path based on pressure at the pressure source or the dome, or a pressure difference between the pressure source and the dome.

IPC Classes  ?

• G05D 16/16 - Control of fluid pressure with auxiliary non-electric power derived from the controlled fluid
• F16K 17/164 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side and remaining closed after return of the normal pressure
• F16K 15/18 - Check valves with actuating mechanismCombined check valves and actuated valves
• F16K 31/124 - Operating meansReleasing devices actuated by fluid the fluid acting on a piston servo actuated

Abstract

An illumination system can be configured for use with a liquid level gauge. A mounting bracket can be configured to secure a LED assembly to a frost-proof extension of the liquid level gauge, with the LED assembly disposed adjacent to a second edge face of the frost-proof extension that is opposite a liquid tube. The LED assembly can be thereby configured to illuminate the liquid tube via the second edge face of the frost-proof extension.

IPC Classes  ?

• G01F 23/02 - Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by gauge glasses or other apparatus involving a window or transparent tube for directly observing the level to be measured or the level of a liquid column in free communication with the main body of the liquid
• F21S 4/28 - Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports rigid, e.g. LED bars
• F21S 8/00 - Lighting devices intended for fixed installation
• F21S 41/19 - Attachment of light sources or lamp holders
• G01F 23/292 - Light
• F21V 19/00 - Fastening of light sources or lamp holders
• H01R 33/00 - Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holdersSeparate parts thereof

Abstract

A pilot-operated relief valve assembly can include a relief valve, and a pressure detection assembly. A valve lift factor or indicator of relief flow can be determined based on pressure measurements gathered by the pressure detection assembly.

IPC Classes  ?

• F16K 17/10 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve
• F16K 31/122 - Operating meansReleasing devices actuated by fluid the fluid acting on a piston
• G05D 16/16 - Control of fluid pressure with auxiliary non-electric power derived from the controlled fluid

Abstract

A pilot-operated relief valve assembly can include a relief valve, and a pressure detection assembly. A valve lift factor or indicator of relief flow can be determined based on pressure measurements gathered by the pressure detection assembly.

IPC Classes  ?

• F16K 17/10 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve
• F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
• F16K 17/02 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side
• G01F 1/36 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
• F16K 31/363 - Operating meansReleasing devices actuated by fluid in which fluid from the conduit is constantly supplied to the fluid motor the fluid acting on a piston
• G01F 1/40 - Details of construction of the flow constriction devices
• G01F 1/38 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction the pressure or differential pressure being measured by means of a movable element, e.g. diaphragm, piston, Bourdon tube or flexible capsule

Abstract

A pilot-operated relief valve assembly can include a relief valve, and a pressure detection assembly. A valve lift factor or indicator of relief flow can be determined based on pressure measurements gathered by the pressure detection assembly.

IPC Classes  ?

• F16K 17/10 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve
• F16K 31/122 - Operating meansReleasing devices actuated by fluid the fluid acting on a piston
• G05D 16/16 - Control of fluid pressure with auxiliary non-electric power derived from the controlled fluid

Abstract

Some embodiments of the invention provide a valve including a body, a valve element arranged within the body to selectively inhibit flow through the body, and a seal assembly that includes a gasket, a cutter seat, and a retaining ring. The cutter seat includes a cutter that is arranged to cut the body gasket during installation. A two-plane seal is formed by cutting the body gasket between the retaining ring and the body during installation. Some embodiments of the invention can allow for an insertion of sealing media into difficult sealing areas where small surface areas and large diameters make traditional gasket construction difficult.

IPC Classes  ?

• F16K 1/226 - Shape or arrangement of the sealing
• F16J 15/00 - Sealings
• F16J 15/06 - Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
• F16K 27/02 - Construction of housingsUse of materials therefor of lift valves