HIGH PRESSURE RELIEF VALVE 1/8" - 3/4" NPT 10-2400 Psig Description 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 any liquid or gas application. 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. 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 discharge to atmosphere. Valves can be supplied with a manual pull ring override. 100% Factory Preset and Tested Zero Leakage to 95-98% of Set Pressure Tamper Proof Adjustment Excellent Reseal Performance Technical Data • • • • • Set Pressure Range: 10 to 2400 Psig (0.7 to 166 Bar) Set Pressure Tolerance: Factory Preset +/-5% on increasing pressure Reseal: Elastomer Seals 90%-95% of Actual Crack Pressure. PTFE may be slightly lower Inline Valves (Series HPRV): Proof Pressure: 3700 Psig (225 Bar) Burst Pressure: >5000 Psig (345 Bar) Temperature Range: -320º F to 400º F (-220º C to 205º C) Based on seal selection, see ordering information HPRVA Vent to Atmosphere Valve Body Material Component Inlet Body, Outlet Cap, Spring Chamber, Spring Retainer,O'Ring Spreader Locking Screw As Specified, See Ordering Information Pull Stud Pull Ring 303 SS, ASTM A582 Plated Steel *Lubricated with Krytox ™ HPRVM Vent to Atmosphere (Manual Override)

HIGH PRESSURE RELIEF VALVE Dimensional Data Inlet (NPT) Flow Data Dimensional data is stated in inches. Consult Factory Kd is stated at 110% of Nominal Set Pressure. Orifice sizes are stated in inches. Consult factory for proper sizing or flow requirements, flow curves available on request. Ordering Information SERIES HPRV – Male x Female, Inline HPRVA – Male Inlet, Discharge to Atmosphere HPRVM – Male Inlet, Vent to Atmosphere with Manual Override STANDARD PORTING CONNECTION 125 – 1/8” 250 – 1/4” 375 – 3/8” 500 – 1/2” 750 – 3/4” ANSI/ASME B1.20.1 (Inlet & Outlet) NOMINAL SET PRESSURE Specify...