4WRZ16E150-7X Rexroth Proportional Valve 315bar

Model Number	4WRZ16E150-7X/6AG24NTK4/M

Product Description

Product Overview

The 4WRZ16E150-7X/6AG24NTK4/M is a high-performance pilot-operated proportional directional valve engineered strictly to ISO 4401-07 (NG16 / CETOP 07) standards. Designed as an exact aftermarket replacement for original Bosch Rexroth 4WRZ series valves (including 4WRZ16, 4WRZ10, and 4WRZ10W6 models), this unit offers 100% drop-in interchangeability without requiring any piping or electronic interface modifications. Combining a responsive pilot solenoid valve with precision main-stage spool control, every unit undergoes 100% simulated full-load factory testing to guarantee ultra-low hysteresis, minimal internal leakage, and fast dynamic response under demanding industrial pressures up to 315 bar.

Technical Specifications

Model Code: 4WRZ16E150-7X/6AG24NTK4/M (Compatible with 4WRZ16E150, 4WRZ16, 4WRZ10, 4WRZ10W6 series)
Mounting Interface: ISO 4401-07-08-0-05 (NG16 / CETOP 07)
Max Operating Pressure (Ports P, A, B): 315 bar (4567 psi)
Pilot Control Pressure (Port X): Min. 15 bar to Max. 250 bar
Nominal Flow Rate: 150 L/min (at valve pressure drop $\Delta p = 10\text{ bar}$ )
Max Permissible Flow: Up to 300 L/min
Control Type & Power Supply: Pilot-operated proportional solenoid control, 24V DC (6A variant)
Spool Symbol: Symbol E (Closed center spool function)
Fluid Temp & Viscosity: -20°C to +80°C; Viscosity range 20 to 380 $\text{mm}^2/\text{s}$
Weight: Approx. 12.5 kg

Key Technical Advantages

100% Direct Drop-in Interchangeability: Flange dimensions, oil port layouts, and electrical connection interfaces completely align with original Bosch Rexroth specifications. This ensures hassle-free installation with zero subplate modifications and minimal downtime.
Micron-Level Precision & Low Hysteresis (< 1%): Spool and housing bores are precision-honed to aerospace tolerances. Combined with optimized pilot flow channels, the valve achieves a hysteresis of less than 1%, delivering superior repeatability and smooth velocity regulation.
High Volumetric Efficiency Under Pressure: Built from high-strength ductile iron, the heavy-duty body resists deformation under continuous 315 bar pressure. Optimized spool land geometries drastically minimize internal cross-port leakage.
100% Full-Condition Simulation Testing: Every valve undergoes rigorous automated bench testing before shipment. Flow-vs-signal curves, dynamic response times, and pressure-holding integrity are thoroughly validated to prevent early field failures or thermal drift.

Application Areas

Heavy-duty metal forging and hydraulic press machinery
Injection and blow molding machinery (proportional injection and clamping circuits)
Metallurgical rolling mills and continuous casting actuators
Marine, offshore, and subsea electro-hydraulic propulsion systems

Expert Maintenance Tips

Strict Fluid Cleanliness Control: Proportional valves require high-grade oil filtration. Ensure system oil cleanliness meets ISO 4406 class 18/16/13 (or NAS class 7) or better to protect the pilot stage orifices and prevent main spool abrasion.
Subplate Flatness & Torque Specs: Ensure the mounting subplate surface flatness is within 0.01/100 mm with a surface finish better than Ra 0.8. Tighten mounting bolts diagonally in stages to recommended torque specifications to prevent mechanical stress from binding the internal spool.

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Company Profile

Frequently Asked Questions

1.What ls our Main Products?

1.Hydraulic pump
2.Hydraulic valve
3.Hydraulic motor
4.Hydraulic cylinder
5.Hydraulic parts

2. What about the MOQ?

MOQ: 1pcs— we support sample and small quantity orders.

3.What are your advantages?

Adhere to quality first.
Support customization, ODM & OEM service.
1-year warranty and complete after-sales support.
Safe and fast shipping worldwide.
24-hour online service for your inquiries.

4.Are you a manufacturer? What’s your delivery time?

Yes, we are a manufacturer with our own factory.

Common models are in stock, and orders are usually shipped within 1–3 days.

5.Which payment methods are accepted?

We accept T/T, L/C, PayPal, VISA, Western Union, Apple Pay, Google Pay, Afterpay (Clearpay), Klarna, and Trade Assurance.

For full orders: 30% deposit, balance before shipment.

For small/sample orders: full payment in advance.

6.How will you deliver my goods?

We offer flexible shipping options: DHL, UPS, FedEx, TNT, EMS, as well as air or sea freight.

All deliveries ensure door-to-door fast and safe service.

7.How do you inspect and guarantee your products?

All products are tested before shipment to ensure perfect working condition.

We offer a 12-month warranty — if a product fails due to quality issues, we provide free spare parts or repair support.

8.What about after-sales service?

If you encounter any problem during use, please contact your sales manager or our support team at any time.

We will respond quickly and help solve the issue efficiently.

9.What are your main applications?

Hydraulic systems
Agricultural machinery
Construction machinery
Automobile industry
Local distributors and maintenance centers

10.Can I get a discount for bulk orders?

Yes. We offer competitive wholesale prices and try our best to give benefits to long-term partners.

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