Hydraulic Control Valve 90R75/100/130/180/250 HS/HF

Hydraulic Control Valve 90R75/100/130/180/250 HS/HF

3 month ago

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

 4 year year

Product details

Hydraulic Control Valve 90R75/100/130/180/250 HS/HF

Product Overview

This Hydraulic valve is a dedicated pilot control assembly matched for Sauer‑Danfoss 90R series closed‑circuit hydraulic pump, covering models 90R75, 90R100, 90R130, 90R180, 90R250 with HS and HF control modes. As a critical regulating component inside complete hydraulic system, it adjusts the swash‑plate angle of the hydraulic pump, realizes stepless displacement change, forward‑reverse flow switching for construction Machine. Widely used for original equipment matching, field repair and aftermarket replacement of concrete mixer truck, road roller and other heavy‑duty Machine. This Hydraulic valve directly influences response sensitivity, stability and volumetric efficiency of the whole hydraulic system.

Technical Specifications

- Compatible pump models: 90R75, 90R100, 90R130, 90R180, 90R250, HS / HF control type

- Product Type: Pilot Hydraulic valve for variable displacement hydraulic pump

- Control form: Hydraulic pilot control

- Working pressure: Matches 90R series closed‑circuit hydraulic system pressure grade

- Installation: Direct mounting on housing of 90R series hydraulic pump, no extra modification

- Main components: Valve body, spool assembly, feedback spring, control piston, sealing components

- Working medium: Anti‑wear hydraulic oil for mobile hydraulic system

- Operating temperature: ‑20℃ ~ +85℃

- Feature: High‑precision spool grinding, sensitive response, stable feedback performance, good interchangeability, perfectly fits main pump of heavy‑duty Machine.

Working Principle

Hydraulic pilot signal acts on this Hydraulic valve, pushes inner spool to shift, then outputs control pressure oil to servo piston of hydraulic pump. It drives the swash plate to swing, changes pump displacement and oil flow direction, so as to control rotation speed and direction of hydraulic motor in hydraulic system. Built‑in spring feedback mechanism keeps stable displacement output according to pilot signal. Worn or stuck Hydraulic valve will cause faults such as slow response, unstable speed and high internal leakage of Machine. Replacing qualified control valve can restore normal performance of the whole hydraulic system.

Core Advantages

1. Strictly follow original dimension standards, excellent interchangeability, direct replacement for damaged valve without machining, convenient for on‑site maintenance of Machine.

2. Precision‑manufactured spool and valve‑body pair, quick response, smooth adjustment, effectively improve operating stability of matched hydraulic pump.

3. Reliable sealing performance, resist oil contamination in complex working condition, reduce failure rate of complete hydraulic system.

4. Solve common failures: pump cannot adjust displacement, unstable output flow, slow forward‑reverse response, abnormal noise of hydraulic pump.

5. Complete inspection before delivery, suitable for heavy‑load, high‑vibration working environment of engineering Machine.

Application Range

90R‑series HS/HF Hydraulic valve is key spare part for Sauer‑Danfoss 90R closed‑circuit hydraulic pump. It serves the hydraulic system of various heavy‑duty Machine, mainly for concrete mixer trucks, road rollers, asphalt pavers and other construction machinery. Supplied for machinery repair shop, service station and global aftermarket spare‑parts trade.

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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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