We are looking for the Non Return Valves and the Water Differential Pressure Switches to fit into our project.The units that we will be assembling are to be fitted into the main water supply for residential use; therefore they must be approved for drinking water. (Stainless steel or brass)The inlet pressure varies for different sites, but the water differential pressure will stay constant. If the inlet pressure is 100 PSI and the 1inch non return valve has a stronger spring fitted to hold 5 PSI when the outlet pressure drops below 96 PSI the water differential pressure switch would close sending a signal to the 1 inch latching solenoid to close. I have seen these manufactured as one unit but only in small sizes which will not deliver the flow of water required. If your company can supply these items we would require a sample of each to fit into the pipe work for testing purposes, is this possible and at what cost. Country:Australia
