REXROTH Z2FS 6 A2-44/2QV R900439389

Rexroth Double Throttle Check Valve NG6 Z2FS 6 A2-44/2QV

Description

The Rexroth Z2FS 6 A2-44/2QV is a high-performance double throttle check valve for sandwich plate mounting. It is designed to influence the flow rate of one or two actuator ports, allowing for precise speed control of hydraulic motors or cylinders. This model provides meter-in control and is built to the highest standards of quality and reliability that Rexroth is known for.

Specifications

• Manufacturer: Rexroth (Bosch Rexroth)
• Type: Double Throttle Check Valve
• Size: NG6 (CETOP 3)
• Mounting Interface: ISO 4401-03-02-0-05
• Adjustment Type: Screw with lock nut
• Maximum Operating Pressure: 315 bar
• Maximum Flow: 80 l/min
• Hydraulic Fluid: Mineral oil (HL, HLP) based on DIN 51524; FKM seals (Viton)

Label Info

• Model: Z2FS 6 A2-44/2QV
• MNR: R900439389
• SN: 124301846
• FD: 45516

Application

This valve is widely used in industrial hydraulics, machine tools, presses, and general manufacturing equipment where precise control of actuator speed is required. Its standard NG6 sandwich plate design allows for easy integration into new or existing hydraulic circuits.

Country of Origin

Made in Germany

CO2 Impact

Reusing this component saves approximately 3.6 kg of CO2 emissions compared to manufacturing a new one. This choice supports a circular economy and reduces industrial waste.

Availability

This is a used item in good working condition. Order now from spareparts2day for expert support and fast delivery.

FAQ

What is the function of the ‘A2’ designation in the Z2FS 6 A2-44/2QV model number?

The ‘A2’ signifies a ‘meter-in’ control configuration. This means the valve throttles the hydraulic fluid flow going *into* the actuator through ports A and B, controlling its speed. The return flow is unrestricted.

What is the maximum operating pressure and flow rate for this valve?

The Rexroth Z2FS 6 series is typically rated for a maximum operating pressure of 315 bar (4568 PSI) and a maximum flow rate of approximately 80 liters per minute (21 GPM). Always consult the official datasheet for the exact specifications of your component series.

What type of hydraulic fluid is compatible with the ‘V’ designation for seals?

The ‘V’ at the end of the type number indicates that the valve is fitted with FKM (Viton) seals. These seals are suitable for use with mineral oils (HL, HLP), synthetic fluids, and many flame-retardant hydraulic fluids (HFD). They offer excellent temperature and chemical resistance.

Current Date: Friday, March 13, 2026

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