High-pressure pressure relief valve PRFA series

for hydraulic systemsstainless steelhigh-capacity

This direct-acting valve is ideally suited for hydraulic applications where a relief valve with higher flow is needed to regulate the upstream pressure. Minimum cracking pressures are available from 50-500 psid. - Safety Relief Valve - Diameter: 0.500 inches - Full Open Lohm Rate: 50 Lohms max - Nominal System Pressure: Up to 3000 psi - Cracking Pressure Range: 50 to 500 psi General Performance - Leakage at Minimum Cracking Pressure: 10 Drops / Minute Maximum - Leakage at Shutoff: 20 Drops / Minute Maximum - Restriction at Minimum Recommended Valve Lift: 350 Lohms Maximum - Nominal System Pressure: up to 3000 psi - Nominal Weight: 20.0 grams - Test Fluid: MIL-PRF-83282 at 85°F Materials - Body: 304 CRES (AMS 5639) - Pin: 15-5PH CRES (AMS 5659) - Poppet: 15-5PH CRES (AMS 5659) - Spring Seat: 303 CRES (QQ-S-763C) - Spring: 17-7PH CRES (AMS 5678) - Seat: 440C CRES (AMS 5630) - Finish: All CRES parts passivated. Pins are prewaxed. Do not degrease. Do not lubricate. Part Numbers & Specifications - PRFA5006050L: Forward, 50 psid, 50 Lohms, 3.4 gpm, 63 psid, 45 psid - PRFA5006080L: Forward, 80 psid, 50 Lohms, 4.2 gpm, 100 psid, 72 psid - PRFA5006120L: Forward, 120 psid, 50 Lohms, 5.2 gpm, 150 psid, 108 psid - PRFA5006200L: Forward, 200 psid, 50 Lohms, 6.8 gpm, 250 psid, 180 psid - PRFA5006300L: Forward, 300 psid, 50 Lohms, 8.4 gpm, 375 psid, 270 psid - PRFA5006400L: Forward, 400 psid, 50 Lohms, 9.6 gpm, 500 psid, 360 psid - PRFA5006500L: Forward, 500 psid, 50 Lohms, 10.8 gpm, 625 psid, 450 psid - PRRA5006050L: Reverse, 50 psid, 50 Lohms, 3.4 gpm, 63 psid, 45 psid - PRRA5006080L: Reverse, 80 psid, 50 Lohms, 4.2 gpm, 100 psid, 72 psid - PRRA5006120L: Reverse, 120 psid, 50 Lohms, 5.2 gpm, 150 psid, 108 psid - PRRA5006200L: Reverse, 200 psid, 50 Lohms, 6.8 gpm, 250 psid, 180 psid - PRRA5006300L: Reverse, 300 psid, 50 Lohms, 8.4 gpm, 375 psid, 270 psid - PRRA5006400L: Reverse, 400 psid, 50 Lohms, 9.6 gpm, 500 psid, 360 psid - PRRA5006500L: Reverse, 500 psid, 50 Lohms, 10.8 gpm, 625 psid, 450 psid - Performance on MIL-PRF-83282 at 85°F Replacement Parts & Accessories - CUTA5000106C: Installation / Extraction Tool Set (Forward Configurations) - CUTA5000116C: Installation / Extraction Tool Set (Reverse Configurations) - CKFA5000003A: Replacement Pin - Flow Curve, Cross Section, Dimensional, and Installation Hole details available in image gallery. Key Technical Specifications - Valve Type: Direct-acting pressure relief valve - Application: Hydraulic systems requiring high flow relief - Cracking Pressure Range: 50-500 psid - Diameter: 0.500 inches - Full Open Lohm Rate: 50 Lohms max - Nominal System Pressure: Up to 3000 psi - Nominal Weight: 20.0 grams - Materials: 304 CRES, 15-5PH CRES, 303 CRES, 17-7PH CRES, 440C CRES - Finish: All CRES parts passivated; pins prewaxed