초록

An automatic pressure activated diverter valve with check valve action, made from pressure rated components, that provides flow from one or more independent flow lines to outside storage tank and back to flow line when the flow line is pressurized, without affecting unpressurized zones.

대표청구항 ▼

[ I claim:] [1.] A valve enabling one fertilizer storage tank to supply multiple sprinkler zones by allowing fertilizer flow to each sprinkler zone only when the zone valve is open and operating, installed on the non-pressure side of the zone valve when the zone valve is closed, which automatically

[ I claim:] [1.] A valve enabling one fertilizer storage tank to supply multiple sprinkler zones by allowing fertilizer flow to each sprinkler zone only when the zone valve is open and operating, installed on the non-pressure side of the zone valve when the zone valve is closed, which automatically opens when sprinkler zone valve is opened pressurizing the supply side inlet port and automatically closes when sprinkler zone valve closes and supply side inlet port is not pressurized, will not be motivated to open by back pressure and back flow from other open sprinkler zones, preventing fertilizer flow into zones in which zone valves are closed, will create a fertilizer injection delay in the open zone until the zone is pressurized above a predetermined level, with predetermined opening pressure not affected by pressure on ports other than the supply side inlet port, said apparatus comprising,a housing having flow inlet and outlet ports on a supply and return side, with the supply side being larger than the return side, with valve plugs and seals connected by a valve shaft, moveable simultaneously, with a spring to motivate staying in the closed position, with supply side ports offset to create a cavity between the supply side inlet port and supply side valve seal, with supply side inlet cavity larger than return side cavity creating an engineered unbalanced condition when pressure enters the supply side inlet port motivating the valve to open, with no cavity between the supply side outlet port and the supply side valve seal, with return side ports in alignment with no cavity between inlet or outlet ports and return side valve seal, eliminating any motivation of movement of the valve to the open or closed position, by pressure in any port other than the supply side inlet port, that automatically opens a supply side outlet port and a return side inlet and outlet port when pressurized from the supply side inlet port only,a valve plug and seal in both the supply and return sides creating a seal to prevent flow when in the closed position connected by a valve shaft,a seal in the valve shaft body cavity preventing flow between supply and returns sides,an air vent allowing the evacuation of air when valve is moving to the open position and entry of air when valve moves to the closed position.