HPRV

The HPRV Series Relief Valve provides accurate crack pressure with zero leakage up to 98% of nominal set pressure. When properly specified, this factory preset, tamper-proof design, is ideally suited for most liquid or gas applications. Encapsulating the o-ring seal within the poppet eliminates seal extrusion and cold flow characteristics. By guiding the poppet into the body, a line of contact seal is ensured and, at high crack pressure settings, the o-ring is protected by a metal-to-metal stop between the poppet and the body. The high flow design, combined with narrow band interchangeable springs, minimizes system pressure rise as flow demand increases. Available in brass or stainless steel and inline or discharging to the atmosphere. Valves can be supplied with a manual pull ring override.