REXROTH Z2FS 6-2-44/2QV R900481624

Rexroth Z2FS 6 Double Throttle Check Valve

Description

This is a Z2FS 6 series double throttle check valve from Bosch Rexroth, designed for sandwich plate mounting. It is used to limit the main or pilot flow of one or two actuator ports, providing precise control over actuator speed. The valve features two symmetrically arranged throttle check valves, allowing for meter-in or meter-out control depending on the model. This particular unit is configured for meter-out throttling.

Specifications

• Manufacturer: Rexroth
• Type: Double Throttle Check Valve
• Model: Z2FS 6-2-44/2QV
• Interface: NG6 (ISO 4401-03, CETOP 3)
• Maximum Operating Pressure: 315 bar
• Adjustment Type: Screw with lock nut
• Sealing Material: FKM (Viton) for wide fluid and temperature compatibility

Label Info

• MNR: R900481624
• FD: 55821
• Serial: 124857552

Application

Ideal for use in industrial hydraulics, machine tools, presses, and general manufacturing equipment where controlled movement of hydraulic cylinders or motors is required. Its standard NG6 interface allows for easy integration into valve stacks.

Country of Origin

Made in Germany

CO2 Impact

By purchasing this pre-owned component, you are contributing to a circular economy and helping to avoid approximately 3.6 kg of CO2 emissions associated with the production of a new part.

Availability

This item is in stock and ready for immediate dispatch. Order now from spareparts2day for expert support and fast delivery.

FAQ

What does ‘NG6’ signify for this Z2FS 6 valve?

NG6 (from the German ‘Nenngroesse 6’) refers to the nominal size of the valve’s mounting interface. It corresponds to the international standard ISO 4401-03 and CETOP 3, ensuring it is interchangeable with other NG6 valves.

What is the function of the ‘/2Q’ in the model number Z2FS 6-2-44/2QV?

The ‘/2Q’ designation specifies the throttling function. In this case, it means ‘meter-out’ control, which controls the fluid flow rate leaving the actuator. This is commonly used to control the speed of hydraulic cylinders or motors.

What are the advantages of FKM (Viton) seals, indicated by the ‘V’ in the type code?

FKM seals offer excellent resistance to high temperatures (up to 200 deg C), a wide range of hydraulic fluids, chemicals, and weathering. This makes the valve suitable for demanding applications with specialty fluids or high operating temperatures.

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Last Update: Friday, March 13, 2026