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Check Valves

500 Lo-Lohm Check Valve

This miniature check valve is only 0.5 inches in diameter and 1.5 inches in length. This valve features a poppet-style design to maximize the free flow in one direction and prevent flow in the other direction. It is ideal for applications with flow rates up to 25 GPM.

Key Product Facts
  • Poppet-Style Check Valves
  • Diameter:0.5 inches
  • Lohm Rate:12 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 15 psid and Greater 12 Lohms Maximum
Nominal System Pressure Up to 3000 psi
Nominal Weight 20 grams
Test Fluid MIL-PRF-83282 at 85°F
Materials
PART MATERIAL SPECIFICATION
Body 304 CRES AMS 5639
Pin 15-5PH CRES AMS 5659
Poppet 15-5PH CRES AMS 5659
Spring Seat 303 CRES QQ-S-763C
Spring 17-7PH CRES AMS 5678
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
PART NUMBER CRACKING PRESSURE (psid) LOHM RATE FLOW DIRECTION Request Information
CKFA5006205A 5 ± 3 12 Lohms Maximum Forward Request
CKFA5006201A 1 ± 0.5 12 Lohms Maximum Forward Request
CKRA5006205A 5 ± 3 12 Lohms Maximum Reverse Request
CKRA5006201A 1 ± 0.5 12 Lohms Maximum Reverse Request

Installation & Accessories

Replacement Parts & Accessories
PART NUMBER DESCRIPTION
CUTA5000106C Installation / Extraction Tool Set
CKFA5000003A Replacement Pin

CAD Envelopes

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Questions?

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.