Ball check valve CKFA series

miniature

This miniature check valve is only 0.187 inches in diameter and 0.66 inches in length. This valve features an economical ball-style design allowing free flow in one direction and preventing flow in the other direction. It is ideal for applications with flow rates up to 2.2 GPM. An integral safety screen is available for increased protection against contamination. - Ball-Style Check Valves - Diameter: 0.187 inches - Lohm Rate: 140 Lohms max - Operating Pressures: Up to 4000 psi - Leakage: 1 drop / hour at 4000 psi General Performance - Cracking Pressure: 5 ± 3 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 25 psid and Greater: Unscreened: 140 Lohms Maximum, Screened: 150 Lohms Maximum - Nominal System Pressure: Up to 4000 psi - Nominal Weight: Unscreened: 1.0 grams, Screened: 1.5 grams - Test Fluid: MIL-PRF-83282 at 85°F Materials - Body: 17-4PH CRES, AMS 5643 - Pin: 17-4PH CRES, AMS 5643 - Spring Seat: 17-4PH CRES, AMS 5643 - Spring Guide: 304 CRES, AMS 5639 - Ball Follower: 304 CRES, AMS 5639 - Ball: 440C CRES, AMS 5630 - Springs: 17-7PH CRES, AMS 5678 - Screen (Screened Version Only): 304L CRES, ASTM A 666 - Braze (Screened Version Only): AMS 4774 - Post (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 - CKFA1876015A: Cracking Pressure: 5 ± 3, Lohm Rate: 140 Lohms Maximum, Flow Direction: Forward, Maximum Flow Rate: 6 GPM - CKFA1875035A: Cracking Pressure: 5 ± 3, Lohm Rate: 150 Lohms Maximum, Screen Hole Size: 0.004 inches, Flow Direction: Forward, Maximum Flow Rate: 4 GPM - CKFA1875045A: Cracking Pressure: 5 ± 3, Lohm Rate: 150 Lohms Maximum, Screen Hole Size: 0.006 inches, Flow Direction: Forward, Maximum Flow Rate: 6 GPM - CKFA1875055A: Cracking Pressure: 5 ± 3, Lohm Rate: 150 Lohms Maximum, Screen Hole Size: 0.008 inches, Flow Direction: Forward, Maximum Flow Rate: 6 GPM - CKFA1875065A: Cracking Pressure: 5 ± 3, Lohm Rate: 150 Lohms Maximum, Screen Hole Size: 0.015 inches, Flow Direction: Forward, Maximum Flow Rate: 6 GPM Replacement Parts & Accessories - CUTA1870306C: Valve Insert Installation / Extraction Tool Set - CUTA1870228C: Screen Installation / Extraction Tool Set - CKFA1870004A: Replacement Pin - FSSA1870040B: Replacement Screen, Hole Size: 0.004 inches - FSSA1870060B: Replacement Screen, Hole Size: 0.006 inches - FSSA1870080B: Replacement Screen, Hole Size: 0.008 inches - FSSA1870150B: Replacement Screen, Hole Size: 0.015 inches - 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 Features / Specifications - Miniature ball-style check valve - Diameter: 0.187 inches - Length: 0.66 inches - Flow rate: up to 2.2 GPM - Operating pressure: up to 4000 psi - Leakage: 1 drop/hour at 4000 psi - Cracking pressure: 5 ± 3 psid - Lohm rate: 140 Lohms max (unscreened), 150 Lohms max (screened) - Nominal weight: 1.0 g (unscreened), 1.5 g (screened) - Materials: 17-4PH CRES, 304 CRES, 440C CRES, 17-7PH CRES, 304L CRES, 303 CRES - Finish: All CRES parts passivated - Test fluid: MIL-PRF-83282 at 85°F