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201-9329 Hydraulic Return Check Valve (301mm) for CAT 320C 320D 323D Excavators

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  2. 201-9329 Hydraulic Return Check Valve (301mm) for CAT 320C 320D 323D Excavators
201-9329 Hydraulic Return Check Valve (301mm) for CAT 320C 320D 323D Excavators
201-9329 Hydraulic Return Check Valve (301mm) for CAT 320C 320D 323D Excavators
201-9329 Hydraulic Return Check Valve (301mm) for CAT 320C 320D 323D Excavators
201-9329 Hydraulic Return Check Valve (301mm) for CAT 320C 320D 323D Excavators

High-precision 201-9329 Hydraulic Return Check Valve for CAT 320C, 320D, and 323D excavators. 301mm aluminum alloy valve designed to prevent backflow and protect hydraulic components.

Technical Specifications 201‑9329 ‑ Return Check Valve for CAT 320/323 Series

201‑9329 Return Check Valve — Hydraulic System Safety Component

The 201‑9329 Return Check Valve is a critical safety and protection part for the hydraulic return circuit of Caterpillar excavators. With an overall length of 301 mm, this mechanical non‑return valve allows free oil flow back to the hydraulic tank while strictly preventing reverse backflow. It protects main hydraulic pumps, control valves and precision internal components from pressure shock and contamination damage.

1. Technical Specifications

Technical ParameterSpecification Details
Part Number201‑9329 (2019329)
Overall Length301 mm
Main MaterialHigh‑Grade Alloy Aluminum, Lightweight & Corrosion‑Resistant
Valve TypeMechanical One‑Way Non‑Return Check Valve
Working PrincipleAutomatic opening‑closing driven by hydraulic differential pressure
Core FunctionPrevent hydraulic oil backflow & protect downstream hydraulic components

2. Machine Compatibility

This return check valve fits the following Caterpillar excavator models:

  • CAT 320 Series: 320C, 320C L, 320C FM, 320D, 320D L, 320D GC, 320D FM, 320D2, 320D2 L

  • CAT 323 Series: 323D, 323D L

3. Key Features & Advantages

  • Precision‑Calibrated Cracking Pressure: Manufactured to OEM standards, perfectly matching pressure parameters of CAT 320‑series hydraulic systems.

  • High‑Performance Aluminum Alloy Body: Better thermal stability and hydraulic‑fluid corrosion resistance than ordinary steel check valves.

  • Effective Hydraulic‑System Protection: Blocks reverse oil flow to avoid seal failure and internal‑component damage caused by sudden machine shutdown.

  • Long‑Life Durable Structure: Stable performance under frequent pressure cycling, extending service intervals and reducing machine downtime.

Commercial Reference Information
Product Type: Aftermarket New Replacement for Caterpillar
Cross Part Number: 2019329
MOQ: 2‑5 PCS
Warranty Period: 6 Months

For bulk wholesale, technical consultation and hydraulic‑component sourcing solutions:

Xuzhou Sinoswift Import & Export Co., Ltd.
Contact: +86 13701956981
Email: [email protected]

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