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Check Valves

250 HFS Check Valve

This miniature check valve is only 0.25 inches in diameter and 0.74 inches in length. This valve’s unique design offers both high flow and high pressure capability in a compact package. It is ideal for applications with flow rates up to 5.6 GPM.

Key Product Facts
  • Ball-Style Check Valves
  • Diameter:0.25 inches
  • Lohm Rate:55 Lohms max
  • Operating Pressures:Up to 5000 psi
  • Leakage:1 drop / hour at 5000 psi

Product Information

General Performance
Characteristic Specification
Maximum Leakage in Checked Direction at 5 psid 1 Drop / Minute
Maximum Leakage in Checked Direction at 1000-5000 psid 1 Drop / Hour
Lohm Rate at 25 psid and Greater 55 Lohms Maximum
Nominal System Pressure Up to 5000 psi
Test Fluid MIL-PRF-83282 at 85°F
Body 15-5PH CRES AMS 5659
Pin 13-8MO Stainless Steel AMS 5629
Ball Follower 303 CRES QQ-S-763C
Ball 440C CRES AMS 5630 or
AMS 5618
Spring 17-7PH CRES AMS 5678
Finish: All CRES parts passivated.
Pins are prewaxed. Do not degrease. Do not lubricate.
Flow Curve
Cross Section View
Dimensional View
Installation Hole Details

Part Numbers & Specifications

This table below contains the part numbers and technical specifications for this product. If you have specific questions, need a quote, or would like to request a handbook or drawing, click the red request button in the column on the far right.

Part Numbers & Specifications
CHFA2506801A 1 ± 0.5 55 Lohms Maximum Forward Request
CHFA2506805A 5 ± 3 55 Lohms Maximum Forward Request

Installation & Accessories

Replacement Parts & Accessories
Part Number Description
CUTA2500406A Installation / Extraction Tool Set
CHFA2500005A Replacement Pin

CAD Envelopes

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From plugs to solenoid valves, there’s a vast array of products that The Lee Company can offer. If you’d like to discuss the best solution for your specific application or to learn more about our capabilities, use-cases, or quality standards, contact your local Lee sales engineer.