초록 ▼

An improved valve includes an inlet, an outlet and a valve seat. A flexible diaphragm assembly seals against the valve seat. A bleed assembly extends into a pressure chamber located above the diaphragm for bleeding fluid pressure out of the chamber, thereby opening the valve. The bleed assembly incl

An improved valve includes an inlet, an outlet and a valve seat. A flexible diaphragm assembly seals against the valve seat. A bleed assembly extends into a pressure chamber located above the diaphragm for bleeding fluid pressure out of the chamber, thereby opening the valve. The bleed assembly includes a hollow tube inserted into a plastic plunger seat that is carried on the cap of the valve beneath the plunger of an actuating solenoid. Such a bleed assembly does not need a bleed tube having a precisely controlled length, and is not sensitive to flexure of the cap.

대표청구항 ▼

An improved valve of the type containing a valve seat and a movable valve element for sealing against the valve seat, a pressure chamber in the valve on one side of the valve element, a bleed assembly extending through the valve element and having a first end located in the pressure chamber and an o

An improved valve of the type containing a valve seat and a movable valve element for sealing against the valve seat, a pressure chamber in the valve on one side of the valve element, a bleed assembly extending through the valve element and having a first end located in the pressure chamber and an open second end located on the other side of the valve element, movable plunger means carried on the valve for selectively sealing against the first end of the bleed assembly to control the flow of fluid through the bleed assembly and thereby control the operation of the valve, wherein the improvement relates to a bleed assembly comprising: (a) an elongated hollow bleed tube; (b) an enlarged plunger seat having a flow passageway extending therethrough between an inlet and an outlet, wherein one end of the bleed tube is inserted into the flow passageway such that the bleed tube forms a continuation of the flow passageway; and (c) means for supporting the plunger seat proximately to the plunger means to allow the plunger means to close against the inlet of the plunger seat, wherein the valve comprises a valve body closed by a separable cap, and wherein the supporting means is carried in the cap, the cap being made of a particular type of material that allows the cap to flex due to some external environmental condition for permitting the bleed tube and the plunger seat to move with the cap as the cap flexes to always maintain the same relative distance between the plunger means and the plunger seat.