The primary protection to personnel and equipment involved with static and dynamic pressurized systems. This one-piece pressure relief valve is adjustable from 3 to 50 psig (for use with ACE Pressure Reactor) by simply adjusting set screws to desired cracking pressure. When pressure exceeds set cracking pressure, valve bleeds; when safe lower pressure is realized, valve will reseal. Fabricated from 316 Stainless Steel with a Viton O-Ring. Ends are ¼" MPT for connecting to Screw thread with a 5844 Adapter. Combining this valve with the 6445 Rupture Disc in the same pressure manifold offers fail-safe protection against runaway pressure situations.