RVSS-NS4-FNS4-6-N
316 SS, RV Series Relief Valve, High Pressure, 1/4 Male NPT ×1/4 Female NPT, Fluorocarbon FKM O-ring, 6000psig(414bar), 25°F to 250°F(-4°C to 121°C), 0.14" Orifice, No spring
RVSS-NS8-FNS8-6-F
316 SS, RV Series Relief Valve, High Pressure, 1/2 Male NPT × 1/2 Female NPT, Fluorocarbon FKM O-ring, 6000psig(414bar), 25°F to 250°F(-4°C to 121°C), 0.14" Orifice, Green Spring, Set Pressure 50 to 300psig(3.45 to 20.7bar)