Poppet check valve CKFA series

miniature

This miniature check valve is only 0.187 inches in diameter and 0.62 inches in length. This valve features a poppet-style design to maximize the free flow in one direction and prevent flow in the other direction. It is ideal for applications with flow rates up to 3 GPM. An integral safety screen is available for increased protection against contamination. - Poppet-Style Check Valves - Diameter: 0.187 inches - Lohm Rate: 100 Lohms max - Operating Pressures: Up to 4000 psi - Leakage: 1 drop / hour at 4000 psi General Performance - Cracking Pressure: 5 ± 3 or 1 ± 0.5 psid - Maximum Leakage in Checked Direction at 5 psid: 1 Drop / Minute - Maximum Leakage in Checked Direction at 1000-4000 psid: 1 Drop / Hour - Lohm Rate at 15 psid and Greater: Unscreened: 100 Lohms, Screened: 140 Lohms - Nominal System Pressure: Up to 4000 psi - Nominal Weight: Unscreened: 1.4 grams, Screened Forward: 1.8 grams, Screened Reverse: 1.55 grams - Available Screen Hole Size: 0.015 inches Nominal - 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: 17-7PH CRES, AMS 5678 - Spring Seat: 304 CRES, AMS 5639 - Screen (Reverse Screened Version Only): 303 CRES, QQ-S-763C - Screen (Forward Screened Version Only): 304L CRES, ASTM A 666 - Braze (Forward Screened Version Only): AMS 4774 - Post (Forward Screened Version Only): 303 CRES, QQ-S-763C Finish: All CRES parts passivated. Pins are prewaxed. Do not degrease. Do not lubricate. Part Numbers & Specifications - CKFA1876205A: Cracking Pressure: 5 ± 3, Lohm Rate: 100 Lohms Maximum, Flow Direction: Forward - CKFA1876201A: Cracking Pressure: 1 ± 0.5, Lohm Rate: 100 Lohms Maximum, Flow Direction: Forward - CKRA1876205A: Cracking Pressure: 5 ± 3, Lohm Rate: 100 Lohms Maximum, Flow Direction: Reverse - CKRA1876201A: Cracking Pressure: 1 ± 0.5, Lohm Rate: 100 Lohms Maximum, Flow Direction: Reverse - CKFA1875205A: Cracking Pressure: 5 ± 3, Lohm Rate: 140 Lohms Maximum, Screen Hole Size: 0.015, Flow Direction: Forward - CKFA1875201A: Cracking Pressure: 1 ± 0.5, Lohm Rate: 140 Lohms Maximum, Screen Hole Size: 0.015, Flow Direction: Forward - CKRA1875205A: Cracking Pressure: 5 ± 3, Lohm Rate: 140 Lohms Maximum, Screen Hole Size: 0.015, Flow Direction: Reverse - CKRA1875201A: Cracking Pressure: 1 ± 0.5, Lohm Rate: 140 Lohms Maximum, Screen Hole Size: 0.015, Flow Direction: Reverse Replacement Parts & Accessories - CUTA1870110C: Installation / Extraction Tool Set - CKFA1870005A: Replacement Pin - CUTA1870228C: Forward Screen Installation / Extraction Tool Set - FSSA1870150B: Replacement Forward Screen - Flow curves and cross-section views available for both unscreened and screened configurations. - Dimensional and installation hole details provided for reference (all dimensions in inches). Technical Specifications - Valve Type: Poppet-Style Check Valve - Diameter: 0.187 inches - Length: 0.62 inches - Flow Rate: Up to 3 GPM - Lohm Rate: 100 Lohms max (uncreened), 140 Lohms max (screened) - Operating Pressure: Up to 4000 psi - Leakage: 1 drop/hour at 4000 psi - Screen Hole Size: 0.015 inches (screened versions) - Body Material: 304 CRES - Spring Material: 17-7PH CRES - Poppet Material: 15-5PH CRES - Pin Material: 17-4PH CRES - Weight: 1.4g (uncreened), 1.8g (screened forward), 1.55g (screened reverse) - Test Fluid: MIL-PRF-83282 at 85°F