Patent ID: 7077376

Claim:
A water saver valve comprising: a) an intensifier piston chamber including a reciprocating piston movable by fluid pressure between a first position and a second position, a shutoff spool chamber juxtaposed to said piston chamber, a control spool chamber, an inlet having a supply orifice connected to said shutoff spool chamber and having a control spool supply line connected to said control spool chamber, an outlet having an outlet orifice connected to said shutoff spool chamber and having a pilot line connected to said control spool chamber, a piston first position supply line connected from a first side of said piston to said control spool chamber and a piston second position supply line connected from a second side of said piston to said control spool chamber, and a drain tank line port; b) a shutoff spool positioned in said shutoff spool chamber said shutoff spool movable between a first open position and a second closed position, said shutoff spool being biased to said first open position and movable to said second closed position by direct physical contact by said piston against said shutoff spool; and c) a control spool positioned in said control spool chamber, to control movement of said intensifier piston.