Ball check valve CKRA series

miniaturestainless steelaxial

This miniature check valve is only 0.25 inches in diameter and 0.78 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 1.8 GPM. An integral safety screen is available for increased protection against contamination. - Ball-Style Check Valves - Diameter: 0.25 inches - Lohm Rate: 175 Lohms max - Operating Pressures: Up to 3000 psi - Leakage: 1 drop / hour at 3000 psi General Performance Characteristic - Specification 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 1000-3000 psid - 1 Drop / Hour Lohm Rate at 20 psid and Greater - Unscreened: 175 Lohms, Screened: 235 Lohms Nominal System Pressure - Up to 3000 psi Nominal Weight - Unscreened: 3.8 grams, Screened: 4.5 grams Available Screen Hole Size - 0.008 inches Nominal Test Fluid - MIL-PRF-83282 at 85°F Materials PART - MATERIAL - SPECIFICATION Body - 303 CRES - QQ-S-763C Pin - 303 CRES - QQ-S-763C Spring - 17-7PH CRES - AMS 5678 Ball - 440C CRES - AMS 5630 Ball Follower - 303 CRES - QQ-S-763C Spring Seat - 303 CRES - QQ-S-763C Cage - 303 CRES - QQ-S-763C Screen (Screened Versions Only) - 304L CRES - ASTM A 666 Braze (Screened Versions Only) - — - AMS 4774 Finish: All CRES parts passivated. Pins are prewaxed. Do not degrease. Do not lubricate. Part Numbers & Specifications PART NUMBER - CRACKING PRESSURE (psid) - LOHM RATE - SCREEN HOLE SIZE (inches) - FLOW DIRECTION CKFA2506005A - 5 ± 3 - 175 Lohms Maximum - - Forward CKFA2501001A - 1 ± 0.5 - 175 Lohms Maximum - - Forward CKRA2506005A - 5 ± 3 - 175 Lohms Maximum - - Reverse CKRA2501001A - 1 ± 0.5 - 175 Lohms Maximum - - Reverse CKFA2505005A - 5 ± 3 - 235 Lohms Maximum - 0.008 - Forward CKFA2505001A - 1 ± 0.5 - 235 Lohms Maximum - 0.008 - Forward CKRA2505005A - 5 ± 3 - 235 Lohms Maximum - 0.008 - Reverse CKRA2505001A - 1 ± 0.5 - 235 Lohms Maximum - 0.008 - Reverse Replacement Parts & Accessories PART NUMBER - DESCRIPTION CUTA2500106C - Installation / Extraction Tool Set CKFA2500003A - Replacement Pin - Flow curves and cross-section views available for both screened and unscreened configurations. - Dimensional and installation hole details provided for reference (all dimensions in inches). Technical Specifications - Valve Type: Ball-Style Check Valve - Diameter: 0.25 inches - Length: 0.78 inches - Max Flow Rate: 1.8 GPM - Operating Pressure: Up to 3000 psi - Lohm Rate: 175 Lohms (unscreened), 235 Lohms (screened) - Screen Hole Size: 0.008 inches (screened versions) - Nominal Weight: 3.8g (unscreened), 4.5g (screened) - Materials: 303 CRES, 17-7PH CRES, 440C CRES, 304L CRES - Test Fluid: MIL-PRF-83282 at 85°F