Poppet check valve 250 Zero-Leak

for airstainless steelViton®

This miniature, zero-leak check valve is only 0.25 inches in diameter and 0.78 inches in length. This check valve utilizes an elastomeric seat material to provide zero leakage in the checked direction. It is ideal for pneumatic and hydraulic applications with flow rates up to 1.7 GPM. - Poppet-Style Check Valves - Diameter: 0.25 inches - Lohm Rate: 180 Lohms max - Operating Pressures: Up to 3000 psi - Leakage: 0 bubbles / minute General Performance Characteristic | Specification --- | --- Cracking Pressure | 5 ± 3 psid Leakage in Checked Direction | Zero Leakage From 5-3000 psid Lohm Rate at 15 psid and Greater | 180 Lohms Maximum Nominal System Pressure | Up to 3000 psi Nominal Weight | 3.8 grams Test Fluid | Air at 70°F Materials PART | MATERIAL | SPECIFICATION --- | --- | --- Body | 304 CRES | AMS 5639 Poppet | 15-5PH CRES | AMS 5659 Seat | 304 CRES | AMS 5639 Spring | 17-7PH CRES | AMS 5678 Pin | 17-4PH CRES | AMS 5678 Elastomeric Seat Option 1 | Fluorocarbon | AMS-R-83485 or AMS-R-83248 Elastomeric Seat Option 2 | EPDM | MIL-R-83285 Finish: All CRES parts passivated. Pins are prewaxed. Do not degrease. Do not lubricate. Part Numbers & Specifications PART NUMBER | CRACKING PRESSURE (psid) | LOHM RATE | SEAT MATERIAL | FLOW DIRECTION | TEMP RANGE (°F) --- | --- | --- | --- | --- | --- CSRA2506005A | 5 ± 3 | 180 Lohms Maximum | Fluorocarbon | Reverse | 0 / +395 CSFA2506005A | 5 ± 3 | 180 Lohms Maximum | Fluorocarbon | Forward | 0 / +395 CSRA2506105A | 5 ± 3 | 180 Lohms Maximum | EPDM | Reverse | -65 / 290 CSFA2506105A | 5 ± 3 | 180 Lohms Maximum | EPDM | Forward | -65 / 290 Replacement Parts & Accessories PART NUMBER | DESCRIPTION --- | --- CUTA2500506C | Installation / Extraction Tool Set CKFA2500005A | Replacement Pin - Flow Curve: Valve Performance on MIL-PRF-83282 at 85°F (see image in secondary images) - Cross Section Views: Free Flow Forward and Reverse Configurations (see images in secondary images) - Dimensional View: All dimensions are in inches (see image in secondary images) - Installation Hole Details: All dimensions are in inches (see image in secondary images) Key Technical Specifications - Diameter: 0.25 inches - Length: 0.78 inches - Flow Rate: up to 1.7 GPM - Cracking Pressure: 5 ± 3 psid - Zero leakage from 5-3000 psid - Lohm Rate: 180 Lohms Maximum - Nominal System Pressure: Up to 3000 psi - Nominal Weight: 3.8 grams - Test Fluid: Air at 70°F - Body Material: 304 CRES (AMS 5639) - Poppet Material: 15-5PH CRES (AMS 5659) - Seat Material: 304 CRES (AMS 5639) - Spring Material: 17-7PH CRES (AMS 5678) - Pin Material: 17-4PH CRES (AMS 5678) - Elastomeric Seat Options: Fluorocarbon (AMS-R-83485 or AMS-R-83248), EPDM (MIL-R-83285) - Finish: All CRES parts passivated. Pins are prewaxed. Do not degrease. Do not lubricate.