High-capacity pressure relief valve PBFA series

direct-operatedpoppetadjustable

This direct-acting valve is designed for applications where stability is a must. Dual dampening chambers provide an extremely stable relief flow over various flow rates and pressure combinations. Minimum cracking pressures are available from 3000-4700 psid. - Safety Relief Valve - Diameter: 0.375 inches - Full Open Lohm Rate: 400 Lohms max - Nominal System Pressure: Up to 5000 psi - Cracking Pressure Range: 3000 to 5400 psi General Performance - Leakage at Minimum Cracking Pressure: 2 mL / Minute Maximum - Leakage at Shutoff: 2 mL / Minute Maximum - Restriction at Minimum Recommended Valve Lift: 1500 Lohms - Nominal System Pressure: up to 5000 psi - System Peak Pressure: 6750 psi Maximum - Nominal Weight: 21 grams - Test Fluid: MIL-PRF-83282 at 85°F Materials - Body: 304 CRES (AMS 5639) - Pin: 17-4PH CRES (AMS 5643) - Poppet: 440C CRES (AMS 5630) - Seat: 440C CRES (AMS 5630) - Spring: 17-7PH CRES (AMS 5678) - Retainer: 15-5PH CRES (AMS 5659) - Tube: 13-8 MO CRES (AMS 5629) - Orifice Plate: 304 CRES (AMS 5639) - Shim (Optional): 17-7PH CRES (AMS 5529) Finish: All CRES parts passivated. Pins are prewaxed. Do not degrease. Do not lubricate. Replacement Parts & Accessories - CUTA3752014C: Installation / Extraction Tool Set - PHRA3750003A: Replacement Pin - Flow Curve and Cross Section Views available (see images) Key Technical Specifications: - Valve Type: Direct-acting, high stability pressure relief valve - Dual dampening chambers for stable relief flow - Minimum cracking pressure: 3000-4700 psid - Diameter: 0.375 inches - Full open Lohm rate: 400 Lohms max - Nominal system pressure: up to 5000 psi - Cracking pressure range: 3000 to 5400 psi - System peak pressure: 6750 psi max - Nominal weight: 21 grams - Test fluid: MIL-PRF-83282 at 85°F - Materials: 304 CRES, 17-4PH CRES, 440C CRES, 17-7PH CRES, 15-5PH CRES, 13-8 MO CRES - Finish: All CRES parts passivated; pins prewaxed