Z2FS Stack‑type One‑way Throttle Valve

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Product details

Z2FS Stack‑type One‑way Throttle Valve

Product Overview

Z2FS stack‑mounted one‑way throttle valve is a modular sandwich hydraulic valve conforming to ISO4401 installation standard. It is stacked between solenoid directional valve and manifold block. This valve controls flow rate in one direction for speed regulation, while oil flows freely in reverse direction through built‑in check valve. It is widely applied for speed adjustment of hydraulic cylinders and actuators in various hydraulic system.

Main Technical Parameters

Item Specification

Model Series Z2FS‑NG6, Z2FS‑NG10, Z2FS‑NG16

Max Working Pressure 315 bar (31.5 MPa)

Max Flow Rate 60‑200 L/min (based on nominal size)

Adjustment Mode Knob manual flow adjustment, scale marking for reference

Mounting Standard ISO4401, stack‑sandwich installation

Function One‑way throttling, reverse free flow

Hydraulic Medium Anti‑wear hydraulic oil ISO‑VG32 / VG46

Operating Temperature ‑10℃ ~ +70℃

Filtration Requirement ≤25 μm

Working Principle

1. Throttling direction: Hydraulic oil passes through the adjustable throttle orifice. Rotate the adjustment knob to change orifice opening size, restrict flow volume so as to control the moving speed of hydraulic actuator.

2. Reverse direction: Built‑in check valve opens against spring force, hydraulic oil flows with low pressure drop without throttling effect. Return movement will not be limited.

3. Two‑way independent adjustment versions are available for separate speed control of extend and retract stroke of cylinder.

Core Advantages

1. Stack‑type modular structure, no extra sub‑plate required, convenient for hydraulic station assembly and circuit modification.

2. Precision throttling orifice, stable flow regulation, low speed creep is well suppressed.

3. With scale mark on adjustment knob for repeatable setting of flow value.

4. Bidirectional adjustable options available, can control extend‑stroke and retract‑stroke speed respectively.

5. Compact structure, interchangeable with original Rexroth Z2FS series.

6. Hardened valve core, good wear‑resistance for long‑time continuous industrial operation.

Typical Application

Speed control circuit for hydraulic cylinders on machine tools, injection molding machines, hydraulic presses, automation equipment, lifting machinery and general‑purpose hydraulic stations. Used to regulate extension and retraction speed of executive components.

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

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

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