China Hydraulic Proportional Valve Manufacturers - Customized Hydraulic Proportional Valve

BOKIN offers a comprehensive range of direct-operated and pilot-operated hydraulic proportional valves for precise flow and directional control. Our proportional valve solutions are engineered for compatibility with corresponding Rexroth series, including matched mounting dimensions, interfaces and key hydraulic performance requirements.

Core Specifications

Flow Range: 7–4,700 L/min
Max. Working Pressure: Up to 350 bar
Control Options: ±10 V / 4–20 mA / Selected Digital Interfaces
Mounting: ISO 4401
Warranty: 12 Months

Find My Valve Series

4WREE Series

Direct-Operated Proportional Directional Valves

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4WRPEH Series

High-Response Proportional Directional Valves

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4WRKE Series

Pilot-Operated Proportional Directional Valves

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4WRJE Series

Proportional Directional Valves with Position Feedback

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4WRLE Series

Pilot-Operated Proportional Directional Valves

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4WRAE Series

Direct-Operated Proportional Directional Valves

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4WRZE Series

Pilot-Operated Proportional Directional Valves

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4WRZ Series

Pilot-Operated Proportional Directional Valves

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4WRTE Series

High-Performance Proportional Directional Valves

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4WREE6 A1 Proportional Directional Valve ±10V Voltage Con...
BOKIN 4WREE6 A1 is a compact direct-operated proportional directional valve with electrical position feedback and ±10V voltage control. Designed for high-precision small-to-medium flow hydraulic

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4WRPEH6 A1 10V High-Speed Proportional Valve | 100% Rexro...
4WRPEH6 Size 6 (Component Series 3X) direct-acting high-speed proportional directional valve, 1:1 drop-in replacement for Bosch Rexroth 4WRPEH6 A1 series.. Features ±10V A1 voltage control,

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Pilot-Operated Hydraulic Proportional Valve 4WRKE10 A1 10...
Discover the 4WRKE10 Size 10 (Component Series 3X), a pilot-operated hydraulic proportional valve. Features A1 10V control and integrated electronics (OBE) for precise flow control up to 350 bar.

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Pilot-Operated Hydraulic Valve 4WRJE10 A1 10V OBE Positio...
Discover the 4WRJE10 Size 10 (Component Series 1X), a pilot-operated proportional directional control valve. Features A1 10V control and integrated electronics (OBE) for precise flow regulation up to

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Pilot-Operated Hydraulic Valve 4WRLE10 A1 10V OBE Positio...
Discover the 4WRLE10 Size 10 (Component Series 4X), a pilot-operated directional control valve. Features A1 10V control, integrated electronics (OBE) and IO-Link for I4.0, delivering precise

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Direct-Operated Hydraulic Proportional Valve 4WRAE6 A1 10...
Discover the 4WRAE6 Nominal Size 6 (Component Series 2X), a direct-operated proportional directional valve. Features A1 ±10V control, integrated electronics (OBE), delivering reliable regulation up

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Pilot-Operated Hydraulic Proportional Valve 4WRZE10 A1 10...
Discover the 4WRZE10 Size 10 (Component Series 7X), a pilot-operated hydraulic proportional valve. Features A1 10V control and on-board electronics (OBE) for precise flow direction and size control

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Pilot-Operated Hydraulic Proportional Valve 4WRZ10
Discover the 4WRZ10 Size 10 (Component Series 7X), a pilot-operated hydraulic proportional valve with external control electronics. Delivers precise flow direction and volume control for hydraulic

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Pilot-Operated Hydraulic Directional Valve 4WRTE10 A1 10V...
Discover the 4WRTE10 Size 10 (Component Series 4X), a pilot-operated hydraulic directional valve. Features A1 10V control and integrated electronics (OBE) for precise position, speed, and pressure

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4WREE6 F1 4-20mA Proportional Directional Valve | 100% Re...
4WREE6 F1 Size 6 (Component Series 3X) direct-operated proportional directional valve, 100% interchangeable with Rexroth original 4WREE6 F1 series.. Features 4-20mA F1 current loop control and

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4WREE10 A1 10V Proportional Directional Valve | 100% Rexr...
4WREE10 A1 Size 10 (Component Series 3X) direct-operated proportional directional valve, 100% interchangeable with Rexroth original 4WREE10 A1 series.. Features ±10V A1 voltage control and integrated

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4WREE10 F1 4-20mA Proportional Directional Valve | 100% R...
4WREE10 F1 Size 10 (Component Series 3X) direct-operated proportional directional valve, 100% interchangeable with Rexroth original 4WREE10 F1 series.. Features 4-20mA F1 current loop control and

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Hydraulic Proportional Valve Solutions

BOKIN hydraulic proportional valves provide precise, continuously variable control of flow, pressure and direction for industrial hydraulic systems. Our range includes direct-operated and pilot-operated proportional valves designed for accurate control, fast dynamic response and stable long-term operation.

Key Features: China-based manufacturing · Fast response and reliable lead times · 100% factory inspection · CE certified · High precision · Fast dynamic response · Stable long-term performance · High contamination resistance · Cost-effective solutions

Main Applications: Injection Molding Machines · Die Casting Machines · Blow Molding Machines · Press Brakes · Lithium Battery Roller Presses · Hydraulic Testing Equipment · Metallurgical Equipment · New Energy Equipment · Industrial Hydraulic Systems

Available Series: 4WRA(E) · 4WREE · 4WRPEH · 4WRZ(E) · 4WRKE · 4WRTE · 4WRLE · 4WRJE · 4WRPE etc.

Rexroth-Compatible Solutions: Selected BOKIN proportional valve series are engineered around the mounting dimensions, interfaces and key performance requirements of corresponding Rexroth configurations, providing practical solutions for equipment integration, maintenance and retrofit applications.

Custom Solutions: BOKIN also provides customized proportional valve solutions and private-label manufacturing services to meet specific application and OEM requirements.

Need Help Identifying the Right Proportional Valve?

Not sure which proportional valve series or model fits your application? Contact our technical team for assistance with model selection, specifications and compatibility requirements.

Why Choose BOKIN Proportional Valves

Rexroth-Compatible Design

Selected BOKIN proportional valve series are engineered to match corresponding Rexroth mounting dimensions, interfaces and key hydraulic performance requirements, supporting straightforward system integration and retrofit applications.

Wide Flow & Pressure Range

From compact precision-control valves to high-flow pilot-operated solutions, BOKIN provides configurations covering approximately 7 to 4,700 L/min and up to 350 bar, depending on series and model.

Precision Hydraulic Control

Electrical position feedback, integrated electronics and optimized spool designs provide precise flow and directional control for demanding industrial hydraulic applications.

Factory Quality & Flexible Supply

Each valve undergoes defined manufacturing and performance inspection procedures before shipment. Standard configurations support efficient delivery, while custom specifications are available for OEMs, distributors and system integrators.

Our Hydraulic Proportional Valve Series

Compare the main BOKIN proportional valve series by valve design, flow capacity, control characteristics and typical applications.

Series	Core Positioning	Key Specs	Typical Applications	Quick Action
4WRA / 4WRAE	Direct-operated, basic economical type	NG6 / NG10 Max 42 / 75 L/min 315 bar With/without integrated OBE Open-loop control	General hydraulic power units Simple control systems Light-duty industrial equipment	4WRA(E).PDF
4WREE	Direct-operated, high-precision with electrical position feedback	NG6 / NG10 Max 80 / 180L/min 350 bar Integrated OBE Closed-loop position control Hysteresis ≤ 0.1%	Precision injection molding control Machine tool feed systems Medium-precision motion control Small hydraulic test rigs	4WREE.PDF
4WRPE	Direct-operated high-performance, closed-loop position control	NG10 only Max 80L/min 350 bar Integrated OBE Electrical position feedback High dynamic response	High-precision machine tool hydraulics Injection molding clamping control Metal forming equipment Medium-dynamic motion systems	4WRPE.PDF
4WRPEH	Direct-operated high-response, servo-grade precision	NG6 / NG10 Up to 1000 L/min 350 bar Hysteresis < 0.1% Optional IO-Link interface	High-speed production equipment High-dynamic control scenarios Ultra-precision motion systems	4WRPEH.PDF
4WRZ / 4WRZE	Pilot-operated, standard medium-flow type	NG10 – NG32 Up to 1600 L/min 350 bar With/without integrated OBE	Medium to large hydraulic systems General industrial machinery Metal forming equipment	4WRZ(E).PDF
4WRTE	Pilot-operated high-dynamic, high-performance	NG10 – NG35 Up to 1000 L/min 350 bar Main stage position feedback	High-cycle production lines High-demand hydraulic systems Advanced machine tools	4WRTE.PDF
4WRKE	Pilot-operated heavy-duty, large-flow type	NG10 – NG35 Up to 4700 L/min 350 bar Main stage position control	Die casting machines Large hydraulic presses Metallurgical equipment	4WRKE.PDF
4WRLE	Pilot-operated linear feedback, intelligent type	NG10 – NG35 Up to 1500 L/min 350 bar LVDT feedback, IO-Link optional PL d safety level	Smart manufacturing lines Industry 4.0 systems High-precision test rigs	4WRLE.PDF
4WRJE	Pilot-operated energy-saving, low power consumption	NG10 – NG27 Optimized efficiency 250 bar Stable long-run performance	Energy-saving hydraulic systems Continuous-operation stations Green manufacturing equipment	4WRJE.PDF

Not sure which series matches your existing valve? Send us your current model number, flow requirement, pressure rating and control signal. Our engineers can help identify the appropriate BOKIN series.

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Engineered for Reliable Industrial Performance

1.Precision Manufacturing

BOKIN proportional valves are manufactured using precision machining and controlled assembly processes to maintain consistent spool performance, dimensional accuracy and hydraulic characteristics.

2.Dimensional Compatibility

Selected series are manufactured according to established mounting and interface standards, including ISO 4401 configurations, to support compatibility with corresponding hydraulic system components.

3.Performance Inspection

Manufacturing quality is supported by inspection procedures covering machining, assembly, pressure performance and hydraulic characteristics before shipment.

4.OEM & Custom Configuration

We support custom spool characteristics, control interfaces, nameplates, packaging and other configuration requirements for distributors, OEMs and hydraulic system integrators.

Hydraulic Proportional Valves for Industrial Applications

BOKIN proportional valves are designed for a wide range of industrial hydraulic applications, including:

01/

Plastic & Rubber Machinery – injection molding machines, blow molding machines, extruders (4WREE, 4WRLE, 4WRKE)

02/

Metal Forming – press brakes, stamping presses, forging equipment, rolling mills（4WRKE, 4WRTE, 4WREE）

03/

Die Casting – cold chamber and hot chamber die casting machines (4WRTE, 4WRKE)

04/

New Energy – lithium battery roller presses, electrode manufacturing equipment (4WRPEH, 4WREE)

05/

Test Equipment – hydraulic test rigs, laboratory testing systems (4WRPEH, 4WREE)

06/

Metallurgy – steel mill equipment, continuous casting production lines (4WRKE, 4WRZE)

07/

Construction Machinery – heavy-duty hydraulic systems

08/

General Industry – standard industrial hydraulic power units

Proportional Valve vs. Servo Valve vs. On/Off Valve

Choose the control technology that best matches your precision, response, contamination tolerance and cost requirements.

Feature	On/Off Valve	Proportional Valve	Servo Valve
Control Type	Binary (Open / Closed)	Stepless proportional positioning	Ultra-precise positioning
Response Time	10 – 100 ms	5 – 50 ms	1 – 10 ms
Control Accuracy	±5 – 10%	±0.1 – 3%	±0.01 – 0.5%
Contamination Resistance	Excellent	Good to Moderate	Moderate
Best For	Simple on-off control	Most industrial precision control	Ultra-high dynamic precision systems

For most industrial hydraulic applications, proportional valves provide an effective balance between precision, response, reliability and system cost.

OEM & Custom Hydraulic Proportional Valve Solutions

BOKIN supports distributors, OEM manufacturers and hydraulic system integrators with flexible proportional valve configurations.

Available options include:

Custom spool characteristics
Special control interfaces
Voltage and current input configurations
Custom nameplates and branding
Customized packaging
Application-specific valve configurations

Customizable Options

Parameter	Available Configurations
Rated Pressure	up to 315 / 350 bar
Flow Capacity	7 L/min to 4700 L/min
Control Interface	±10 V voltage, 4…20 mA current, IO-Link
Seal Material	NBR, FKM (for mineral oil, biodegradable fluids)
Port Size	NG6 to NG35, ISO 4401 standard mounting
Mounting Style	Subplate mounting, manifold mounting

Contact our engineering team to discuss your technical requirements.

Request OEM Solution

Built for Global Industrial Applications

ISO 4401 Compatible Configurations

12-Month Quality Warranty

100% Pre-Shipment Performance Inspection

Global OEM & Distributor Support

10,000+ Units Monthly Production Capacity

CE Certified

Hydraulic proportional valve CE certification certificate

Simple & Transparent Ordering Process

Send Your Requirements

Send us your model, quantity and application details

Technical Confirmation

Our engineers verify specifications and configuration.

Quotation

Receive a detailed quotation with specifications and delivery information.

Production & Inspection

Manufacturing & 100% performance testing

Delivery

Shipment after balance payment, with tracking provided

Technical Support

12-month warranty + 24/7 technical support

FAQ

Q: Are all BOKIN proportional valves compatible with Rexroth series valves?

A: Yes. All BOKIN proportional valve series follow consistent dimensional and hydraulic specifications with Rexroth equivalents, with the same ISO 4401 mounting pattern and electrical interfaces, enabling direct drop-in installation.

Q: What is the minimum order quantity for proportional valves?

A: MOQ is 1 piece for all standard models. Quality testing and maintenance spare parts are fully supported.

Q: How long is the standard delivery time?

A: Standard stock models are delivered within 2–4 weeks after order confirmation. Custom configured models take 4–6 weeks.

Q: What control interfaces are available?

A: Most series are available with ±10 V voltage input (A1 version) and 4…20 mA current input (F1 version). Selected series (4WRPEH, 4WRLE) also support IO-Link digital interface for Industry 4.0 integration.

Q: Do you provide technical support for model selection?

A: Yes. Our hydraulic engineering team can provide model recommendation and system matching solutions based on your working pressure, flow rate and application scenarios.

Q: What warranty do you offer?

A: All proportional valves come with a 12-month quality warranty from the date of delivery. We provide free replacement parts and 24/7 technical support for non-artificial quality issues.

Q: Can we cooperate as an agent or exclusive distributor?

A: Agent and exclusive distributor cooperation is welcome worldwide. Favorable policies include competitive pricing, marketing support, technical training and regional protection.

Q: Are BOKIN proportional valves compatible with Rexroth systems?

A: Selected BOKIN proportional valve series are engineered for compatibility with corresponding Rexroth configurations, including relevant mounting dimensions, interfaces and key hydraulic performance requirements. Compatibility should be confirmed according to the exact model and configuration.

Packaging & Shipping

Item	Details
Packaging	Standard export cases or customized packaging
Shipping Methods	Sea freight, air freight and express delivery (DHL, FedEx, UPS) are all available. We will recommend the most suitable option based on your order volume and urgency.

Installation Reference

For standard installation guidance, please refer to the product datasheet or contact our technical team. We also provide on-site commissioning support for bulk orders.