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Check Valves

187 Axial Flow, 250 Lohm Check Valve

This miniature check valve is only 0.187 inches in diameter and 0.62 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 1.2 GPM.

Key Product Facts
  • Ball-Style Check Valves
  • Diameter:0.187 inches
  • Lohm Rate:250 Lohms max
  • Operating Pressures:Up to 3000 psi
  • Leakage:1 drop / hour at 3000 psi

Product Information

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 250 Lohms
Nominal System Pressure Up to 3000 psi
Nominal Weight 1.5 grams
Test Fluid MIL-PRF-83282 at 85°F
Part Material Specification
Body 303 CRES QQ-S-763C
Pin 17-4PH CRES AMS 5643
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
Finish: All CRES parts passivated.
Pins are prewaxed. Do not degrease. Do not lubricate.
Flow Curve
Cross Section Views
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
CKFA1876105A 5 ± 3 250 Lohms Maximum Forward Request
CKFA1876101A 1 ± 0.5 250 Lohms Maximum Forward Request
CKRA1876105A 5 ± 3 250 Lohms Maximum Reverse Request
CKRA1876101A 1 ± 0.5 250 Lohms Maximum Reverse Request

Installation & Accessories

Replacement Parts & Accessories
CUTA1870104C Installation / Extraction Tool Set
JETA1870004A Replacement Pin

CAD Envelopes

Get in touch


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.