Pilot Operated Check Valve Hydraulic Pilot Operated Check Valve NFPA Size D05 A and B Port Operation Type - Hydraulic Valves Max Flow - Hydraulic Valves 20 gpm Max Pressure - Hydraulic Valves 5 000 psi - Hz - Inrush Amps - Holding Amps Max Tank Pressure (PSI) - Adjustable PSI Range - Nitrile O-Ring Seal Type Length (In.) 6.5 in Width (In.) 2.75 in Height (In.) 1.97 in CPOM3 ISO 4401 NFPA D05 Standards For Use With D05 Valves