Poppet check valve CHFA series

miniaturebackflowhigh-pressure

This miniature, high pressure check valve is only 0.125 inches in diameter and 0.52 inches in length. Its robust design prevents backflow in high pressure systems up to 8000 psi. It is ideal for applications with flow rates up to 0.8 GPM. An integral safety screen is also available. - Poppet-Style Check Valves - Diameter: 0.125 inches - Lohm Rate: 400 Lohms max - Operating Pressures: Up to 8000 psi - Leakage: 1 drop / hour at 8000 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 1000-8000 psid | 1 Drop / Hour Lohm Rate at 20 psid and Greater | Unscreened: 400 Lohms, Screened: 460 Lohms Nominal System Pressure | Up to 8000 psi Nominal Weight | Unscreened: 0.6 grams, Screened Forward: 0.8 grams, Screened Reverse: 0.7 grams Available Screen Hole Size | 0.008 inches Nominal Test Fluid | MIL-PRF-83282 at 85°F Materials PART | MATERIAL | SPECIFICATION --- | --- | --- Body | 304 CRES | AMS 5639 Pin | 13-8 MO CRES | AMS 5629 Poppet | 15-5PH CRES | AMS 5659 Spring | 17-7PH CRES | AMS 5678 Spring Seat | 304 CRES | AMS 5639 Screen (Screened Version Only) | 15-5PH CRES | AMS 5659 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 --- | --- | --- | --- | --- CHFA1256505A | 5 ± 3 | 400 Lohms Maximum | - | Forward CHFA1256501A | 1 ± 0.5 | 400 Lohms Maximum | - | Forward CHRA1256505A | 5 ± 3 | 400 Lohms Maximum | - | Reverse CHRA1256501A | 1 ± 0.5 | 400 Lohms Maximum | - | Reverse CHFA1255505A | 5 ± 3 | 460 Lohms Maximum | 0.008 | Forward CHFA1255501A | 1 ± 0.5 | 460 Lohms Maximum | 0.008 | Forward CHRA1255505A | 5 ± 3 | 460 Lohms Maximum | 0.008 | Reverse CHRA1255501A | 1 ± 0.5 | 460 Lohms Maximum | 0.008 | Reverse Replacement Parts & Accessories PART NUMBER | DESCRIPTION --- | --- CUTA1250306C | Installation / Extraction Tool Set - Flow curves and cross-section views available for both unscreened and screened configurations. - Dimensional and installation hole details provided for all configurations. - 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 1000-8000 psid: 1 Drop / Hour - Lohm Rate at 20 psid and Greater: Unscreened: 400 Lohms, Screened: 460 Lohms - Nominal System Pressure: Up to 8000 psi - Nominal Weight: Unscreened: 0.6 grams, Screened Forward: 0.8 grams, Screened Reverse: 0.7 grams - Available Screen Hole Size: 0.008 inches Nominal - Test Fluid: MIL-PRF-83282 at 85°F - Body Material: 304 CRES (AMS 5639) - Pin Material: 13-8 MO CRES (AMS 5629) - Poppet Material: 15-5PH CRES (AMS 5659) - Spring Material: 17-7PH CRES (AMS 5678) - Spring Seat Material: 304 CRES (AMS 5639) - Screen Material (Screened Version Only): 15-5PH CRES (AMS 5659) - Finish: All CRES parts passivated. Pins are prewaxed. Do not degrease. Do not lubricate.