Patent ID: 11938499
Assignee: MALCO, LLC
Field: Chemical engineering (Chemistry)
Classification: CPC B  F | IPC B  F

Claim 0:
1. A pressure actuated valve comprising:
a. a housing comprising a first part and a second part that form a chamber when engaged together, wherein the chamber has a central axis therethrough, the first part comprises a fluid inlet, and the second part comprises a fluid outlet;
b. a hollow movable piston traversing said chamber, said piston having a fluid passageway therethrough that is aligned with the central axis of said chamber, said piston having a second fluid inlet at one end of said passageway adjacent to said housing inlet and a second fluid outlet at an opposite end of said passageway adjacent to said housing outlet;
c. a first U-cup seal between an interior surface of the first part of said housing and a first exterior surface of said piston, and a second U-cup seal between an interior surface of the second part of said housing and a second exterior surface of said piston for creating a seal between said piston and said chamber;
d. at least one air vent in a wall of said chamber;
e. a stop inside the first part of said housing adjacent to said fluid inlet, and a third seal on said movable piston for engagement with said stop for preventing fluid from flowing through the passageway of said hollow piston when said third seal is engaged against said stop; and
f. a biasing member provided in said chamber around said piston for urging said third seal against said stop, said biasing member being operable to bias said seal against said stop until overcome by water in said fluid inlet reaching or exceeding a threshold pressure.