A swing check valve is disclosed, the swing check valve comprising a housing; a disc; and a sealing arrangement between the housing and disc. The sealing arrangement comprises a flexible disc seat; and a metallic body seat. The metallic body seat comprises an engagement surface for engaging the flexible disc seat, the engagement surface includes a raised portion for engaging the flexible disc. In an embodiment the metallic body seat comprises an engagement surface for engaging the disc seat, the engagement surface comprising a first portion for engaging a flexible elastomeric portion of the disc seat and a second portion for engaging a metallic portion of the disc seat after compressing the flexible elastomeric portion.
The present application is directed, in part, to a device for delivering epoxy material behind the seat of a butterfly valve, the device comprising: a shaft having a first end, a second end, and an internal lumen between the first and second end. The shaft is configured for insertion into an opening in a valve body such that epoxy injected into the first end of the shaft travels along the internal lumen of the shaft to the seat, thereby applying pressure to the seat to press it toward the valve disc.
A valve design including a valve body comprising an aperture through the body is disclosed. The valve includes a shaft secured to a disc with a clamping connection.
F16K 1/22 - 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 pivoted closure members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
F16K 1/48 - Attaching valve members to valve-spindles
Air valves, control-, throttle- and interrupter-valves, each as machine parts of water and sewage pumping stations, water and sewage piping systems, water inlet devices and water treatment plants, sewage treatment plants.
The present disclosure relates to valve lockout systems, including valve lockout systems for use with an actuator and butterfly valves. The lockout system allows controlled access to operation of the valve, either to prevent intentional or unintentional operation of the valve. Thus, the lockout system prevents the unauthorized opening or closing of the valve. The lockout system includes a lockout plate in which a lockout bar is positioned. The lockout bar includes a surface containing a recess. Depending upon the location of the recess the valve shaft can be opened or closed.
A knife gate valve with an interior channel divided by an interior channel configured to receive a valve gate, the valve gate can travel along the interior channel. A removable first wear ring is disposed on the upstream side of the interior channel, the first wear ring substantially lining the upstream side of the interior channel; and a removable second wear ring disposed on the downstream side of the interior channel, the second wear ring substantially lining the downstream side of the interior channel; a first retainer ring adjacent to the gate on the upstream side of the valve; and a second retainer ring adjacent to the gate on the downstream side of the valve is disclosed. Other embodiments are also shown.
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
A knife gate valve with an interior passage divided by an interior channel configured to receive a valve gate, the valve gate can travel along the interior channel. A removable first wear ring is disposed on the upstream side of the interior passage, the first wear ring substantially lining the upstream side of the interior passage; and a removable second wear ring disposed on the downstream side of the interior passage, the second wear ring substantially lining the downstream side of the interior passage; a first retainer ring adjacent to the gate on the upstream side of the valve; and a second retainer ring adjacent to the gate on the downstream side of the valve is disclosed. Other embodiments are also shown.
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
F16J 15/10 - Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
F16J 15/12 - Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing with metal reinforcement or covering
A surge relief angle valve (SRA) is disclosed. The surge relief angle valve is held normally-closed by one or more compression spring(s). In certain embodiments the surge relief angle valve includes a body containing a disc and disc seat; a piston and shaft, the piston and shaft in communication with the disc and disc seat; and a spring providing a force against the piston; wherein the spring is enclosed within a housing and wherein the surge relief valve has a closed self-contained hydraulic system containing the piston and shaft, and providing a dampening force against the spring force.
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 17/04 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded
F02M 11/04 - Multi-stage carburettorsRegister-type carburettors, i.e. with slidable or rotatable throttling valves in which a plurality of fuel nozzles, other than only an idling nozzle and a main one, are sequentially exposed to air stream by throttling valve with throttling valve, e.g. of flap or butterfly type, in a later stage opening automatically the later-stage valves having damping means
F16K 17/02 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side
F02M 61/20 - Closing valves mechanically, e.g. arrangements of springs or weights
F01B 11/00 - Reciprocating-piston machines or engines without rotary main shaft, e.g. of free-piston type
The present disclosure is directed to a combination air valve that uses buoyancy to lift seals into place, preventing media from escaping from the valve. Once the seals are in place, pipeline pressure is used to open and close the valve. The combination air valve includes a low flow vent configured with a pressure equalizing configuration allowing for reduced extrusion forces along the low flow vent, allowing vertical movement of a float shaft at high valve gas pressures with reduced forces.
F16K 31/22 - Operating meansReleasing devices actuated by fluid actuated by a float actuating a lift valve with the float rigidly connected to the valve
The present disclosure is directed to a combination air valve that uses buoyancy to lift seals into place, preventing media from escaping from the valve. Once the seals are in place, pipeline pressure is used to open and close the valve. The combination air valve includes low flow vent configured with a pressure equalizing configuration allowing for reduced extrusion forces along the low flow vent, allowing vertical movement of a float shaft at high valve gas pressures with reduced forces.
Embodiments include a check valve (100) that comprises a valve body (102) defining an inlet port (104) and an outlet port (106); a disc (108) disposed within the valve body, wherein the disc is coupled to a pivot shaft (112) and the pivot shaft is coupled to the valve body; a lever arm (110) coupled to the disc, wherein when the disc rotates the lever arm rotates; an actuator shaft (116) coupled to a motor, and a first interference element (118) coupled to the actuator shaft, wherein the lever arm contacts the first interference element when the disc is in a maximum open position; wherein when the motor rotates the actuator shaft moves longitudinally along its axis to move the first interference element thereby changing the maximum open position. Other embodiments are also included herein.
Embodiments include a check valve that comprises a valve body defining an inlet port and an outlet port; a disc disposed within the valve body, wherein the disc is coupled to a pivot shaft and the pivot shaft is coupled to the valve body; a lever arm coupled to the disc, wherein when the disc rotates the lever arm rotates; an actuator shaft couple to a motor, and a first interference element coupled to the actuator shaft, wherein the lever arm contacts the first interference element when the disc is in a maximum open position; wherein when the motor rotates the actuator shaft moves longitudinally along its axis to move the first interference element thereby changing the maximum open position. Other embodiments are also included herein.
F16K 15/18 - Check valves with actuating mechanismCombined check valves and actuated valves
F16K 15/03 - Check valves with guided rigid valve members with a hinged closure member
F16K 31/52 - Mechanical actuating means with crank, eccentric, or cam
F16K 1/52 - Means for additional adjustment of the rate of flow
F16K 1/20 - 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 pivoted closure members with pivoted discs or flaps with axis of rotation arranged externally of valve member
F16K 31/04 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor
Embodiments include a seal for a knife gate valve. The seal includes a seal body that comprises a top surface and a bottom surface, an inner surface of the seal body defines a gate aperture extending from the top surface to the bottom surface; and an insert disposed within the seal body, wherein the insert extends around at least a portion of the gate aperture and the insert is more rigid than the seal body; wherein an inner surface is nonlinear with at least one projection and at least one trough. Further embodiments include a knife gate valve. The knife gate valve can include a valve body that defines a flow aperture, the valve body configured to be coupled to a conduit; a gate disposed at least partially within the valve body and a seal disposed on top of the valve body. Other embodiments are also included herein.
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
F16J 15/12 - Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing with metal reinforcement or covering
14.
BIDIRECTIONAL KNIFE GATE VALVE WITH A PERIMETER SEAT
Embodiments of the invention include a knife gate valve. The knife gate valve can include: a valve body that defines a center aperture, the valve body configured to be coupled to a conduit; a gate disposed at least partially within the valve body, the gate configured to move vertically in relation to the valve body; a seat disposed in a portion of the valve body, the seat comprising a first end and a second end; and a packing area disposed within the valve body, wherein the packing area comprises a packing element is disposed around a portion of the gate; wherein the first end of the seat and the second end of the seat terminate within the valve body between a middle of the center aperture and the packing area. Other embodiments are also included herein.
F16K 3/30 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing Details
15.
Bidirectional knife gate valve with a perimeter seat
Embodiments of the invention include a knife gate valve. The knife gate valve can include: a valve body that defines a center aperture, the valve body configured to be coupled to a conduit; a gate disposed at least partially within the valve body, the gate configured to move vertically in relation to the valve body; a seat disposed in a portion of the valve body, the seat comprising a first end and a second end; and a packing area disposed within the valve body, wherein the packing area comprises a packing element is disposed around a portion of the gate; wherein the first end of the seat and the second end of the seat terminate within the valve body between a middle of the center aperture and the packing area. Other embodiments are also included herein.
F16K 27/04 - Construction of housingsUse of materials therefor of sliding valves
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 1/20 - 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 pivoted closure members with pivoted discs or flaps with axis of rotation arranged externally of valve member
B23P 15/00 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
The present disclosure is directed to a combination air valve that uses buoyancy to lift seals into place, preventing media from escaping from the valve. Once the seals are in place, pipeline pressure is used to open and close the valve. The combination air valve includes a piston assembly which includes a main disc, a piston head located above the main disc, a float below the main disc, and a float shaft joining the float to the piston. When no media is in the valve the float is at the bottom of the valve and the main disc is down, allowing gases to leave the valve. The float is lifted as media enters the valve, thus using buoyancy to lift the main disc into place, preventing media from escaping from the valve. Once the seals are in place, pipeline pressure is used to open and close the valve.
(1) Fluid handling equipment for use in municipal water, municipal wastewater sewage treatment, pump stations, water treatment, water distribution, petrochemical transformation, mining, pulp and paper production, hydropower production, and hydro dams, namely, fluid control valves, fluid flow regulators, fluid consistency regulators, check valves and parts for the foregoing; valves for industrial machinery; valves as machine components.
F16K 1/22 - 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 pivoted closure members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
Embodiments of the invention include seat for a butterfly valve comprising five sides and defining at least one aperture. Other embodiments are also included herein.
F16K 1/22 - 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 pivoted closure members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
The present disclosure is directed to a combination air valve that uses buoyancy to lift seals into place, preventing media from escaping from the valve. Once the seals are in place, pipeline pressure is used to open and close the valve. The combination air valve includes a piston assembly with includes a main disc, a piston head located above the main disc, a float below the main disc, and a float shaft joining the float to the piston. When no media is in the valve the float is at the bottom of the valve and the main disc is down, allowing gases to leave the valve. The float is lifted as media enters the valve, thus using buoyancy to lift main disc into place, preventing media from escaping from the valve. Once the seals are in place, pipeline pressure is used to open and close the valve.
Gate valves having removable interior wear rings that are easily removed from one side of the gate valve upon removal of a retainer ring. The retainer ring is held in place within the valve housing by combination of compressive and shear forces.
F16K 3/30 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing Details
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 3/20 - 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 with special arrangements for separating the sealing faces or for pressing them together by movement of the seats
Valves having removable interior wear rings in which the wear ring comprises a high-hardness metal ring, the high hardness metal ring having an exterior surface configured to engage the body of gate valve. A polymeric overlay covers at least a portion of the exterior surface of the metal ring, the polymeric overlay forming the final dimensional shape of the wear ring.
F16L 55/105 - Closing devices introduced radially into the pipe or hose
F16K 3/30 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing Details
F16L 57/06 - Protection of pipes or objects of similar shape against external or internal damage or wear against wear
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
26.
Resilient seated butterfly valve with interchangeable off-center and on-center discs
The resilient seated butterfly valve has a common spherical center for receiving either an on-center or off-center disc, both of which are rotatably mounted in the body. A seal has a seat spherical surface. The seal is affixed to the circumference of the valve chamber. It has an on-center seal region for engagement with the on-center spherical sealing edge of the on-center disc. The seal has an off-center seal region for engagement with the off-center spherical sealing edge of the off-center disc. The seal may include an outlet flange, an outlet ramp, an inlet ramp, and an inlet flange. The front face of the seal for the off-center disc extends beyond the position of the front face of the seal for the on-center disc.
F16K 1/22 - 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 pivoted closure members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
27.
RESILIENT SEATED BUTTERFLY VALVE WITH INTERCHANGEABLE OFF-CENTER AND ON-CENTER DISCS
The resilient seated butterfly valve has a common spherical center for receiving either an on-center or off-center disc, both of which are rotatably mounted in the body. A seal has a seat spherical surface. The seal is affixed to the circumference of the valve chamber. It has an on-center seal region for engagement with the on-center spherical sealing edge of the on-center disc. The seal has an off-center seal region for engagement with the off-center spherical sealing edge of the off-center disc. The seal may include an outlet flange, an outlet ramp, an inlet ramp, and an inlet flange. The front face of the seal for the off-center disc extends beyond the position of the front face of the seal for the on- center disc.
F16K 1/22 - 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 pivoted closure members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
28.
Bi-directional knife gate valve apparatus and method
An improved method and apparatus for a valve assembly features a valve body, a first seat ring mounted in the valve body, a second seat ring mounted in the valve body, and a retractable blade gate slideable in between the first seat ring and the second seat ring. The gate is moveable between open and closed position. A first elastomeric ring is disposed in between the valve body and the first seal ring and projecting towards the gate blade. A second elastomeric ring is disposed in between the second seat ring and the valve body and projecting towards the gate blade.
F16K 3/00 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
29.
Plug valve with flow area equal to or greater than the flow area of the connected piping
A plug valve having an entry region, a chamber, and an outlet region, each with a flow area that is equal to or greater than the flow area of, for example, a standard wall ANSI B 36.10 (M) pipe connected to the inlet and outlet flanges of the valve. The valve's plug has a cylindrical front sealing face and a planar rear face. The axis of the sealing face is parallel to, but off-set from the axis of the plug. When the valve is fully open the planar rear face allows unimpeded flow through the chamber and substantially reduces friction to the flow. The valve's seat is cylindrical for mating with the cylindrical front sealing face of the plug. The seat has a rectangular outline shape.
Mixing machines; fluid consistency regulating apparatus, flow feeding apparatus, fluid handling apparatus, fluid control valves and fluid regulating apparatus, valve actuating apparatus, hydraulic and pneumatic actuating apparatus, mixing and feeding apparatus; and parts and fittings for all the aforesaid goods, all included in class 7.
06 - Common metals and ores; objects made of metal
Goods & Services
Fluid Handling Equipment-Namely, Fluid Control Valves, Fluid Regulating Apparatus, Consistency Regulating Apparatus, and Parts and Accessories for Said Equipment
06 - Common metals and ores; objects made of metal
Goods & Services
Fluid Handling Equipment-Namely, Fluid Control Valves, Fluid Regulating Apparatus, Consistency Regulating Apparatus, and Parts and Accessories for Said Equipment
A surge relief angle valve (SRA) is disclosed. The surge relief angle valve is held normally-closed by one or more compression spring(s). In certain embodiments the surge relief angle valve includes a body containing a disc and disc seat; a piston and shaft, the piston and shaft in communication with the disc and disc seat; and a spring providing a force against the piston; wherein the spring is enclosed within a housing and wherein the surge relief valve has a closed self-contained hydraulic system containing the piston and shaft, and providing a dampening force against the spring force.
F16K 17/04 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded
A knife gate valve with an interior passage divided by an interior channel configured to receive a valve gate, the valve gate can travel along the interior channel. A removable first wear ring is disposed on the upstream side of the interior passage, the first wear ring substantially lining the upstream side of the interior passage; and a removable second wear ring disposed on the downstream side of the interior passage, the second wear ring substantially lining the downstream side of the interior passage; a first retainer ring adjacent to the gate on the upstream side of the valve; and a second retainer ring adjacent to the gate on the downstream side of the valve is disclosed. Other embodiments are also shown.
F16J 15/10 - Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
F16J 15/12 - Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing with metal reinforcement or covering
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
A valve design including a valve body comprising an aperture through the body is disclosed. The valve includes a shaft secured to a disc with a clamping connection.
F16K 3/08 - 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 with pivoted closure members in the form of closure plates arranged between supply and discharge passages with circular closure plates rotatable around their centres
An apparatus is provided that in some embodiments provide an improved plug valve having a plug with a curved cylindrical sealing surface and a substantially flat second surface. An inlet region of the housing has a constant cross-sectional flow area.
F16K 5/04 - Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfacesPackings therefor
F16K 13/02 - Other constructional types of cut-off apparatusArrangements for cutting-off with both sealing faces shaped as small segments of a cylinder and the moving member pivotally mounted
The present invention is directed to improved valves having removable interior wear rings and valves containing the removable wear rings. In an example, the wear ring comprises a high-hardness metal ring, the high hardness metal ring having an exterior surface configured to engage the body of gate valve. A polymeric overlay covers at least a portion of the exterior surface of the metal ring, the polymeric overlay forming the final dimensional shape of the wear ring.
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 3/30 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing Details
The present disclosure is directed to a combination air valve that uses buoyancy to lift seals into place, preventing media from escaping from the valve. Once the seals are in place, pipeline pressure is used to open and close the valve. The combination air valve includes a piston assembly with includes a main disc, a piston head located above the main disc, a float below the main disc, and a float shaft joining the float to the piston. When no media is in the valve the float is at the bottom of the valve and the main disc is down, allowing gases to leave the valve. The float is lifted as media enters the valve, thus using buoyancy to lift main disc into place, preventing media from escaping from the valve. Once the seals are in place, pipeline pressure is used to open and close the valve.
An improved method and apparatus for a valve assembly features a valve body, a first seat ring mounted in the valve body, a second seat ring mounted in the valve body, and a retractable blade gate slideable in between the first seat ring and the second seat ring. The gate is moveable between open and closed position. A first elastomeric ring is disposed in between the valve body and the first seal ring and projecting towards the gate blade. A second elastomeric ring is disposed in between the second seat ring and the valve body and projecting towards the gate blade.
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 3/16 - 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 with special arrangements for separating the sealing faces or for pressing them together
43.
BIDIRECTIONAL KNIFE GATE VALVE WITH A PERIMETER SEAT
Embodiments of the invention include a knife gate valve. The knife gate valve can include: a valve body that defines a center aperture, the valve body configured to be coupled to a conduit; a gate disposed at least partially within the valve body, the gate configured to move vertically in relation to the valve body; a seat disposed in a portion of the valve body, the seat comprising a first end and a second end; and a packing area disposed within the valve body, wherein the packing area comprises a packing element is disposed around a portion of the gate; wherein the first end of the seat and the second end of the seat terminate within the valve body between a middle of the center aperture and the packing area. Other embodiments are also included herein.
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 3/30 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing Details
Embodiments include a check valve (100) that comprises a valve body (102) defining an inlet port (104) and an outlet port (106); a disc (108) disposed within the valve body, wherein the disc is coupled to a pivot shaft (112) and the pivot shaft is coupled to the valve body; a lever arm (110) coupled to the disc, wherein when the disc rotates the lever arm rotates; an actuator shaft (116) coupled to a motor, and a first interference element (118) coupled to the actuator shaft, wherein the lever arm contacts the first interference element when the disc is in a maximum open position; wherein when the motor rotates the actuator shaft moves longitudinally along its axis to move the first interference element thereby changing the maximum open position. Other embodiments are also included herein.
The present disclosure is directed to a combination air valve that uses buoyancy to lift seals into place, preventing media from escaping from the valve. Once the seals are in place, pipeline pressure is used to open and close the valve. The combination air valve includes low flow vent configured with a pressure equalizing configuration allowing for reduced extrusion forces along the low flow vent, allowing vertical movement of a float shaft at high valve gas pressures with reduced forces.
The present invention is directed to improved valves having removable interior wear rings secured by a removable retainer ring. In particular, the invention is directed to gate valves having removable interior wear rings that are easily removed from one side of the gate valve upon removal of a retainer ring. The retainer ring is held in place within the valve housing by combination of compressive and shear forces.
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 3/30 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing Details
47.
DEVICE AND METHOD FOR ADJUSTING VALVE SEALING ENGAGEMENT
A device for delivering epoxy material behind the seat of a butterfly valve is disclosed, the device comprises a shaft having a first end, a second end, and an internal lumen between the first and second end; wherein the shaft is configured for insertion into an opening in a valve body, the opening extending from the exterior of the valve body to the outer diameter of a seat member. The first end of the device includes threads for securing the device into the opening in the valve body; wherein the second end of the device terminates in an opening proximal to the seat such that epoxy injected into the first end of the shaft travels along the internal lumen of the shaft to the seat, thereby applying pressure to the seat to press it toward the valve disc.
F16J 15/16 - Sealings between relatively-moving surfaces
F16K 1/22 - 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 pivoted closure members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
