Check Valve for HUSCO Control Valve

Check Valve for HUSCO Control Valve

5 day ago

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

 4 year year

Product details

Check Valve for HUSCO Control Valve, fit Sany 75, XCMG 80 Excavator

Product Overview

This check valve is a key Hydraulic valve for HUSCO multi‑way control valve assembly, compatible with Sany 75 and XCMG 80 excavator. It controls one‑way oil flow inside the hydraulic system, preventing oil backflow and maintaining stable pressure for each actuator circuit of the Machine. Worn, stuck or damaged check valve will trigger typical failures: arm dropping, operation jitter, insufficient action power, pressure loss and slow movement. This aftermarket replacement component meets original dimension standards, suitable for on‑site disassembly, maintenance and overhaul of excavator distribution valve.

Technical Specifications

- Product Name: Check Valve

- Matching Valve Body: HUSCO Control Valve

- Applicable Machine: Sany 75, XCMG 80 Excavator

- Working Medium: Anti‑wear hydraulic oil

- Working Pressure: Matches OEM specification

- Installation: Direct insert‑in replacement, no machining modification

- Main components: Valve spool, valve seat, sealing elements, spring

- Function: Prevent hydraulic oil reverse flow, maintain circuit holding pressure

Working Principle

Installed inside the HUSCO multi‑way control valve, this check valve allows hydraulic oil to pass in one direction. When oil flows forward, hydraulic pressure pushes the spool open to deliver oil to corresponding executive cylinder. When oil pressure reverses, spring force and back‑pressure push the spool tightly against valve seat to block return‑flow. It keeps circuit pressure stable, avoids pressure rebound, and guarantees reliable movement of boom, arm and bucket for the Machine. If the sealing surface gets scratched or spring fatigues, reverse leakage will occur and degrade overall performance of hydraulic system.

Core Advantages

1. Precise machining dimension, perfect assembly fit for original HUSCO control valve.

2. High‑hardness sealing contact surface, good wear‑resistance for repeated impact working conditions.

3. Stable spring performance, sensitive opening and closing response, effectively avoid internal back‑leakage.

4. Direct‑fit spare part; no need to replace the whole control valve, greatly lower repair cost.

5. Fine compatibility with original hydraulic system, convenient for field maintenance and component swap.

Application Scope

Specially applied to HUSCO distribution valve equipped on Sany75 and XCMG80 crawler excavator. Widely used in municipal construction, earth‑moving, farmland renovation and other engineering‑site Machine maintenance. It is an indispensable small hydraulic component to eliminate valve‑circuit faults and restore normal working performance.

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

 Audited supplier

4 year

Address: Ningbo, China

Main Product: hydraulic motor , gear box, hydraulic pump, hydraulic valve , hydraulic winch, hydraulic system

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