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Check Valves

343 Side-Exit Check Valve

This cartridge-style check valve is only 0.343 inches in diameter and 0.78 inches in length. Its side-exit design is useful in hydraulic manifolds where the flow needs to change direction. The valve is ideal for applications with flow rates up to 10 GPM.

Key Product Facts
  • Poppet-Style Check Valves
  • Diameter:0.343 inches
  • Lohm Rate:30 Lohms max
  • Operating Pressures:Up to 5000 psi
  • Leakage:1 drop / hour at 5000 psi

Product Information

General Performance
Characteristic Specification
Cracking Pressure 5 ± 3 psid
Maximum Leakage in Checked Direction at 5 psid 1 Drop / Minute
Maximum Leakage in Checked Direction at 1000-4000 psid 1 Drop / Hour
Lohm Rate at 15 psid and Greater 30 Lohms Maximum
Nominal System Pressure Up to 5000 psi
Nominal Weight 3.6 grams (Insert Only)
Test Fluid MIL-PRF-83282 at 85°F
Materials
PART MATERIAL SPECIFICATION
Body Rear 303 CRES QQ-S-763C
Body Front 15-5PH CRES AMS 5659
Spring 17-7PH CRES AMS 5078
Poppet 15-5PH CRES AMS 5659
Nose Seal 6061-T6 AL AMS 4117
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
PART NUMBER CRACKING PRESSURE (psid) LOHM RATE FLOW DIRECTION Request Information
CHRA3436305A 5 ± 3 30 Lohms Maximum Reverse Request

Installation & Accessories

Replacement Parts & Accessories
PART NUMBER DESCRIPTION
CUTA3430106C Installation / Extraction Tool Set
CHRA3430009A 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.