Abstract

A method of evaluating seal properties of an elastomeric or plastic seal on a valve element or a valve seat is provided, which valve element operated by a hydraulic arrangement, wherein the valve element is operated between—a contact state, where the valve element is in contact with the valve seat, and—a non-contact state, where the valve element is not in contact with the valve seat, wherein the method includes: changing state from a non-contact state to a contact state, —measuring a valve initial contact position at contact with the valve seat, where the elastomeric seal or the plastic seal makes contact with the valve element or the valve seat; —storing the valve initial contact position on a computer-readable medium, —repeating the steps of changing, measuring and storing, and—evaluating seal properties of the elastomeric seal or plastic seal as a function of the stored valve initial contact positions.

IPC Classes  ?

• G01M 13/005 - Sealing rings
• 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
• G01M 13/003 - Machine valves

Abstract

A sanitary valve system (10) comprising an actuator arrangement (20) in an actuator housing (32) comprising a first piston chamber (30I) with a first piston (32I) separating the first piston chamber in a first upper cavity (341U) and a first lower cavity (341L) and having a first piston shaft (36I) configured to operate outside of the actuator housing. The valve system is configured to operate in multiple states. The operation of each state and transitions amongst states including identical states are controlled by regulating the liquid pressure or flow in each respective first and second upper and lower cavities. The regulation of liquid may be via a common distribution plate arrangement (90). The distribution arrangement may be with least one common distribution plate (92) with a set of canals (94) configured to connect at least one set of upper and lower regulation lines (82IU, 82IL,82IIU, 82IIL) with the respective first and second upper and communication lines (50IU, 50IL, 50IIU, 50I IL). A sanitary valve kit and a method of retrofitting an existing valve arrangement are also disclosed.

IPC Classes  ?

• F16K 31/122 - Operating meansReleasing devices actuated by fluid the fluid acting on a piston
• F16K 11/22 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with two or more closure members not moving as a unit operated by separate actuating members with an actuating member for each valve, e.g. interconnected to form multiple-way valves
• F15B 11/036 - Systems essentially incorporating special features for controlling the speed or the actuating force or speed of an output member for controlling the actuating force by means of servomotors having a plurality of working chambers
• F15B 15/14 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit of the straight-cylinder type
• F15B 21/06 - Use of special fluids, e.g. liquid metalSpecial adaptations of fluid-pressure systems, or control of elements therefor, to the use of such fluids

Abstract

A sanitary valve system having a sanitary valve in a valve housing with at least one inlet and at least one outlet, the sanitary valve having at least one surface formed of a hygienic material that prevents growth of bacteria or fungus and is configured to control a flow from the inlet to the outlet by means of a valve regulating element.

IPC Classes  ?

• F16K 31/12 - Operating meansReleasing devices actuated by fluid
• F16K 31/124 - Operating meansReleasing devices actuated by fluid the fluid acting on a piston servo actuated
• F16K 31/122 - Operating meansReleasing devices actuated by fluid the fluid acting on a piston

Abstract

Valve actuator system and a system for operation of valves, which valve comprises a valve housing, which valve housing comprises at least one inlet and at least one outlet, which valve housing further comprises a valve closing element, which valve element is mechanical connected to a valve actuator, which valve actuator comprises at least one piston, which piston is moved in a housing by a pressurized fluid in at least one direction, which valve actuator is connected to a control valve which control valve regulates a flow of a liquid medium from a pressure source to a first cavity chamber in the hosing of the valve actuator where the valve is a sanitary valve primarily for regulation of a flow of Fluid food, which valve actuator is activated by a liquid medium.

IPC Classes  ?

• F16K 31/12 - Operating meansReleasing devices actuated by fluid
• F15B 21/06 - Use of special fluids, e.g. liquid metalSpecial adaptations of fluid-pressure systems, or control of elements therefor, to the use of such fluids
• F16K 31/122 - Operating meansReleasing devices actuated by fluid the fluid acting on a piston