REMOTELY OR MANUALLY OPERABLE MEMBRANE VALVE

• US 3,802,462 A
• Filed: 08/10/1972
• Issued: 04/09/1974
• Est. Priority Date: 08/18/1971
• Status: Expired due to Term

• Current Assignee: Paul Trosch
• Original Assignee: Paul Trosch
• Inventors: Trosch, Paul
• Primary Examiner(s): Rosenthal, Arnold
• Application Number:
  US05/279,687
• Time in Patent Office: 607 Days
• Field of Search: 251/331,61.1,60,14 137/556
• US Class Current: 137/556
• CPC Class Codes: F16K 7/126 the seat being formed on a rib perpendicular to the fluid line
• CPC Class Codes: Y10T 137/8275 Indicator element rigidly carried by the movable element whose position is indicated

Abstract

A housing has a membrane stretched thereacross, the membrane being deflectable towards a flow opening which has an intermediate separating ridge; when the membrane is deflected against the separating ridge, flow communication through the flow opening is interrupted. This deflection can be effected either upon application of a pressure medium to the other side of the membrane, or manually, by moving a counter pressure cup against the other side of the membrane. Movement of the counter pressure cup is obtained, for example, by a spindle threaded into the housing and operable by a removable hand wheel. The membrane, preferably, is formed with an upstanding bolt entering into the spindle, the spindle being made of transparent material so that the position of the membrane can be visually inspected by checking the position of the bolt within the spindle.

Claims

1. Remotely operable and manually operable membrane valve for fluid media comprising a housing;

a membrane (1) stretched across the housing;

inlet and outlet openings located at one side of the membrane in the housing, a separating ridge (10) separating the inlet and outlet openings, deflection of the membrane towards said separating ridge controlling flow of the fluid medium through the valve;

means admitting a control fluid to the other side of the membrane to control deflection thereof;

a pressure cap (3);

an upstanding bolt (4) secured to the membrane (1); and

a hollow, transparent threaded spindle (2) surrounding the bolt (4) located at the other side of the membrane and engaging said pressure cap, said spindle being threaded in said housing, accessible from outside of the housing and effecting movement of the pressure cap (3) towards the membrane (1) to control deflection of the membrane towards and away from the separating ridge (10) and to permit visual inspection of the position of the bolt (4) and hence of the membrane (1).

2. Valve according to claim 1, wherein the threaded spindle (2) is shaped to permit removably placing a handle thereon.

3. Valve according to claim 1, further comprising means (45, 25, 35) to arrest movement of the spindle (2) with respect to the housing (8).

4. Valve according to claim 1, wherein the housing is a two-part housing having a first part including said inlet and outlet means and said duct, and a second part facing the other side of the membrane;

and sealing means are provided sealing the spindle into said second part.

5. Valve according to claim 4, wherein the sealing means comprises a Teflon tape.

6. Valve according to claim 1, wherein friction means (45, 25, 35) are provided frictionally engaging said spindle (2) and arresting said spindle in a predetermined position in said housing to control deflection of the membrane (1) under action of differential pressure within said housing and within said duct.