RVSS-FNS12-8-O
316 SS, RV Series Relief Valve, High Pressure, 3/4 Female NPT, Fluorocarbon FKM O-ring, 6000psig(414bar), 25°F to 250°F(-4°C to 121°C), 0.25" Orifice, Orange Spring, Set Pressure 300 to 700psig(20.7 to 48.3bar)
RVSS-FNS12-8-F
316 SS, RV Series Relief Valve, High Pressure, 3/4 Female NPT, Fluorocarbon FKM O-ring, 6000psig(414bar), 25°F to 250°F(-4°C to 121°C), 0.25" Orifice, Green Spring, Set Pressure 50 to 300psig(3.45 to 20.7bar)