ASME Code Fast Acting Pressure Relief Valve for Air, Silicone Seal, 1 4 NPT Xtra Open Blast Extractor These are best suited for and you may be These are best suited for extractions using fresh high end input materials that only needs a light cleaning High tack & adhesion these valves spring fully open at the set pressure and remain open until the system pressure is restored below the set pressure Inert Gas Activation Pressure Driven Inlet Pipe Size 1 4 Connection Type Pipe Pipe Connection Type Threaded Connection NPT Male Location Bottom Relief Port Connection Type Vent Relief Port Location Side Set Pressure Configuration Nonadjustable Temperature Range 15° to 250° F Valve Shape 90° Elbow Valve Body Shape Straight Overall Height Varies Material Body Brass Seal Silicone Test Mechanism Ring Valve Type Pop Safety Specifications Met ASME BPVC