Stainless steel pressure relief valve PRFA series

pistonhydraulicdirect-operated

This direct-acting valve is ideally suited for hydraulic applications where a relief valve is needed to regulate the upstream pressure. Minimum cracking pressures are available from 50-500 psid. - Safety Relief Valve - Diameter: 0.375 inches - Full Open Lohm Rate: 100 Lohms max - Nominal System Pressure: Up to 3000 psi - Cracking Pressure Range: 50 to 500 psi Characteristic / Specification - Leakage at Minimum Cracking Pressure: 5 Drops / Minute Maximum - Leakage at Shutoff: 20 Drops / Minute Maximum - Restriction at Minimum Recommended Valve Lift: 500 Lohms Maximum - Nominal System Pressure: up to 3000 psi - Nominal Weight: 10.0 grams - Test Fluid: MIL-PRF-83282 at 85°F Materials - Body: 304 CRES (AMS 5639) - Pin: 17-4PH CRES (AMS 5643) - Poppet: 15-5PH CRES (AMS 5659) - Spring Seat: 304 CRES (AMS 5639) - 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. Replacement Parts & Accessories - CUTA3750106C: Installation / Extraction Tool Set (Forward Configurations) - CUTA3750214C: Installation / Extraction Tool Set (Reverse Configurations) - CKFA3750003A: Replacement Pin Part Numbers & Specifications - PRFA3756050L: Forward, 50 psid, 100 Lohms, 1.7 gpm, 63 psid, 45 psid - PRFA3756080L: Forward, 80 psid, 100 Lohms, 2.1 gpm, 100 psid, 72 psid - PRFA3756120L: Forward, 120 psid, 100 Lohms, 2.6 gpm, 150 psid, 108 psid - PRFA3756200L: Forward, 200 psid, 100 Lohms, 3.4 gpm, 250 psid, 180 psid - PRFA3756300L: Forward, 300 psid, 100 Lohms, 4.2 gpm, 375 psid, 270 psid - PRFA3756400L: Forward, 400 psid, 100 Lohms, 4.8 gpm, 500 psid, 360 psid - PRFA3756500L: Forward, 500 psid, 100 Lohms, 5.4 gpm, 625 psid, 450 psid - PRRA3756050L: Reverse, 50 psid, 100 Lohms, 1.7 gpm, 63 psid, 45 psid - PRRA3756080L: Reverse, 80 psid, 100 Lohms, 2.1 gpm, 100 psid, 72 psid - PRRA3756120L: Reverse, 120 psid, 100 Lohms, 2.6 gpm, 150 psid, 108 psid - PRRA3756200L: Reverse, 200 psid, 100 Lohms, 3.4 gpm, 250 psid, 180 psid - PRRA3756300L: Reverse, 300 psid, 100 Lohms, 4.2 gpm, 375 psid, 270 psid - PRRA3756400L: Reverse, 400 psid, 100 Lohms, 4.8 gpm, 500 psid, 360 psid - PRRA3756500L: Reverse, 500 psid, 100 Lohms, 5.4 gpm, 625 psid, 450 psid Performance on MIL-PRF-83282 at 85°F Characteristics / Technical Specifications - Direct-acting pressure relief valve for hydraulic applications - Minimum cracking pressure: 50-500 psid - Diameter: 0.375 inches - Full open Lohm rate: 100 Lohms max - Nominal system pressure: up to 3000 psi - Leakage at minimum cracking pressure: 5 drops/min max - Leakage at shutoff: 20 drops/min max - Restriction at minimum recommended valve lift: 500 Lohms max - Nominal weight: 10.0 grams - Test fluid: MIL-PRF-83282 at 85°F - Body material: 304 CRES (AMS 5639) - Pin material: 17-4PH CRES (AMS 5643) - Poppet material: 15-5PH CRES (AMS 5659) - Spring seat material: 304 CRES (AMS 5639) - Spring material: 17-7PH CRES (AMS 5678) - Seat material: 440C CRES (AMS 5630) - All CRES parts passivated; pins are prewaxed (do not degrease or lubricate)