초록 ▼

A regulator valve has a housing with a seal member therein. First and second plungers are movable in the housing toward and away from the seal member. The plungers are sealed to the housing and have passages therethrough. The plungers are biased toward the seal member by fluid pressure at the housin

A regulator valve has a housing with a seal member therein. First and second plungers are movable in the housing toward and away from the seal member. The plungers are sealed to the housing and have passages therethrough. The plungers are biased toward the seal member by fluid pressure at the housing outlet end. The plungers are biased away from the seal member by a spring. First and second diaphragms connected to the plungers engage the housing inner wall in sealing engagement so that fluid must flow through the passages. The diaphragms and housing define an expansion chamber. A port in fluid communication with the expansion chamber allows selectable introduction of pilot pressure into the expansion chamber to force the first plunger into engagement with the seal member and prevent flow through the passages. In an embodiment of the regulator valve, the water inlet may be oriented at some divergent angle with respect to a water outlet such as 90 degrees.

대표청구항 ▼

1. A regulator valve for regulating fluid pressure and selectively stopping fluid flow, comprising:a housing defining a hollow enclosure, an inlet end and an outlet end,a partition formed in said housing and located between said inlet end and said outlet end,a flow passage extending through said par

1. A regulator valve for regulating fluid pressure and selectively stopping fluid flow, comprising:a housing defining a hollow enclosure, an inlet end and an outlet end,a partition formed in said housing and located between said inlet end and said outlet end,a flow passage extending through said partition,a valve member positioned in said housing and movable towards and away from fluid sealing contact with said partition when acted upon by fluid pressure in said inlet and said outlet ends,a spring biasing said valve member away from said fluid sealing contact with said partition,secondary biasing means for selectively effecting relative movement between said valve member and said partition to move them into sealing engagement with one another and thereby close said flow passage,a valve stem extends from said valve member and terminates in a distal end connected to a first flexible seal positioned to be acted upon by fluid pressure in said inlet end of said housing to bias said valve member towards fluid sealing contact with said partition,said secondary biasing means including a control chamber located out of operative engagement with said first flexible seal and said valve stem to permit control pressure to be introduced into said control chamber to overcome said bias of said spring,a control stem positioned in said control chamber and having a distal end connected to a second flexible seal which is positioned to be acted upon by fluid pressure in said control chamber to overcome said bias of said spring which is acting upon said second flexible seal and said distal end of said control stem, andan opposite end of said control stem engaging said distal end of said valve stem to transmit said spring bias to said stem valve.