TEEJET DIAPHRAGM-TYPE PRESSURE RELIEF VALVE - 3/4" NPT X 300 PSINylon Body with Aluminum Bonnet Interchange 8460 3 4,846034, Net Weight (lbs) 0. 75 Feature description This pressure regulating valve is constructed to use in agricultural spraying applications. This is an inline valve with a 3 4 inch male NPT inlet and a 3 4 inch female NPT outlet. The body of the diaphragm valve is constructed of nylon for chemical compatibility. Size 3 4 inch NPT Brand TeeJet 8460 Series Diaphragm Type Pressure Relief Valve