Flow Control Valve Hydraulic Flow Control Valve NFPA Size D03 A and B Port Operation Type - Hydraulic Valves Max Flow - Hydraulic Valves 20 gpm Max Pressure - Hydraulic Valves 5 000 psi - Hz Adjustable PSI Range - Nitrile O-Ring Seal Type Length (In.) 7.65 in Width (In.) 1.77 in Height (In.) 1.61 in FM2 ISO 4401 NFPA D05 Standards For Use With D03 Valves