Air pressure relief valve PCFM series

stainless steelcartridgedirect-operated

This threadless, cartridge safety pressure relief valve is designed for installation into metal manifolds. The 5.5 mm relief valve’s locking end uses the field-proven Lee Controlled Expansion Principle to provide secure retention and eliminate the need for threads, O-rings, or secondary retainers. This direct-acting valve features all stainless steel construction including a high quality metal seat that delivers low leakage, repeatable cracking pressure, fast response time, low hysteresis, and long life. The valve is 100% functionally tested to ensure performance. - Mounting Configuration: Insert - Into Metal - Diameter: 5.47 mm - Full Open Lohm Rate: 250 Lohms - Maximum Working Pressure: 280 bar - Relief Pressure Range: 100 to 550 kPa General Performance - Full Open Lohm Rate: 250 Lohms - Leakage: 10 SCCM (max) at 172 kPa (25 psid) on Air - Maximum Working Pressure Checked Direction: 280 bar - Maximum Working Pressure Differential Flow Direction: 40 bar - Installation Force: 625 kgf (max) Materials - Body: 303 Stainless Steel - Cage: 305 Stainless Steel - Pin: 416 Stainless Steel - Spring: 302 Stainless Steel - Ball: 440C Stainless Steel Assembly is pre-lubricated for proper installation. Do not clean prior to installation. Part Numbers & Specifications - Part Number: PCFM2550210S - Flow Direction: Forward - Lohm Rate: 250 Lohms - Cracking Pressure: 100 +/- 15 kPa (14.5 +/- 2.2 psid) - Installation Hole Drawing Number: 1INST007226S - Approximate Weight: 0.7 grams Cracking pressure is defined as the pressure at which uprun flow exceeds 50 SCCM of air. Replacement Parts & Accessories: CCRT0900120S - 558 Series Installation Tool Flow Curve, Cross Section Views, Dimensional Views, Installation Hole Details: See images in the gallery for detailed technical drawings and configurations. Key Technical Specifications: - Mounting Configuration: Insert - Into Metal - Diameter: 5.47 mm - Full Open Lohm Rate: 250 Lohms - Maximum Working Pressure: 280 bar - Relief Pressure Range: 100 to 550 kPa - Leakage: 10 SCCM (max) at 172 kPa (25 psid) on Air - Maximum Working Pressure Differential Flow Direction: 40 bar - Installation Force: 625 kgf (max) - Body Material: 303 Stainless Steel - Cage Material: 305 Stainless Steel - Pin Material: 416 Stainless Steel - Spring Material: 302 Stainless Steel - Ball Material: 440C Stainless Steel - Assembly is pre-lubricated for proper installation. Do not clean prior to installation.