Function: float down vale open, float up valve closed, serivce fluids: aviation fuel per mil-t-5624 gr jp-4, jp-5 mil-g-5572, and jp-8 mil-t-83133, temperatures: ambient minus 65 f to plus 160 f, fluid minus 65 to plus 160 f, pressures: operating 0 to 60 psig, proof 120 psig, burst 180 psig, leakage: internal 30cc/min max from 0 to 60 psig (pilot port), external 0cc/min max from 0 to proof pressure, elecrtical: potential 16 to 30 vdc, current 1.0 amps mac, duty continuous