Industrial Relief Valve - Stainless (IRV)
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INDUSTRIAL RELIEF VALVE (STAINLESS) 1/4" and 1/2" NPT -4 and -8 Metal To Metal Face Seal 1/4" and 1/2" Bi-Lok Dual Ferrule Tube 10 - 750 Psig (0.69 - 51.7 Bar) Description The Generant Series Stainless Steel IRV, Industrial Relief Valve is a spring reference over pressure protection device. The valve can be ordered with set pressures ranging from 10 to 750 Psig (0.69 to 51.7 Bar) and come factory preset and permanently locked. Relief pressure can not be altered or adjusted in the field. Seat and poppet geometry combined with optimized spring ranges provide high flow rates with minimum pressure accumulation. Compact design and availability of a variety of inlet and outlet configurations reduces size and piping requirements. Relief pressure can be discharged to atmosphere or to a downstream connection. The IRV is supplied with FKM seals. For severe service applications and set pressures above 50 Psig (3.45 Bar), specify optional PTFE seals. Supplied Factory Preset Set and Permanently Locked for Tamper Proof Service 100% Factory Tested for Leakage, Crack and Reseal Performance High Flow Capacity and Excellent Reseal Performance Available in NPT, Metal to Metal Face Seal and Bi-Lok Dual Ferrule Tube Connections Discharge to Atmosphere or a Wide Varity of Inline Piping Configurations Optional Deflector Cap available for Diverting Exhausted Gas to Atmosphere Available Cleaned and Packaged for Oxygen Service Technical Data Set Pressure Range: FKM: 10 - 750 Psig (0.69 to 51.7 Bar) PTFE: 50 - 750 Psig (3.45 to 51.7 Bar) Factory Set Tolerance: +/- 5% of Specified Pressure Zero Leakage to 95% of Set Pressure Full Rated Flow @ 110% of Set Pressure, unaffected by up to 10% Back Pressure Reseal: FKM seals 90% of Set Pressure PTFE seals 80% of Set Pressure Temperature Rating: -60º F to 375º F (-51º C to 190º C) based on seal material (see how to order) Lubricant: Krytox® Materials of Construction Component Body, Poppet, Seat Screw, Spring Retainer, In-Line Adapter1, Nuts and Ferrules Adjustment Spring Seals 316 Stainless Steel, ASTM A4792 302 or 17-7 PH Stainless Steel, ASTM A313 FKM or PTFE Inline Adapters utilize FKM o’ring seals. Metal to Metal Face Seal Inline Adapters are Electro Polished to 10 Ra Max. 2 Valves supplied with Metal to Metal Face Seal connections have Electro Polished Inlet, Poppet and Seat Screw to 10 Ra Max.

INDUSTRIAL RELIEF VALVE (STAINLESS) Configuration Shown IRV4T-4V Dimensional Data Inlet Size 1/4" NPT 1/2" NPT -4 Face Seal 1/4" Bi-Lok 1/2" Bi-Lok -8 Face Seal Outlet Vent to Atmosphere Deflector Cap 1/4" FNPT 3/8” FNPT 1/2" FNPT -4 Face Seal 1/4" Bi-Lok 1/2" Bi-Lok -8 Face Seal Note: Dimensions shown with Bi-Lok nuts finger-tight. Dimensions are in inches (millimeters), for reference only and subject to change. NPT Threads per ASME B1.20.1 Flow Data Set Pressure Range (Psig) From Krytox® is a registered trademark of DuPont. Vent to Atmosphere Deflector Cap 1/4” Female NPT In-Line Adapter...