REXROTH Z2FS 6-2-44/1Q R900481621

Rexroth Z2FS 6-2-44/1Q Double Throttle Check Valve

Description

The Rexroth Z2FS 6-2-44/1Q is a high-performance double throttle check valve designed for sandwich plate mounting. It is used to control the flow rate of the main or pilot flow in hydraulic systems by throttling the flow in one direction and allowing free flow in the opposite direction for two ports. This particular model, size NG6, is suitable for meter-in or meter-out control applications, providing precise and reliable performance.

Specifications

• Manufacturer: Rexroth
• Type: Double Throttle Check Valve
• Model: Z2FS 6-2-44/1Q
• Material Number: R900481621
• Size: NG6
• Mounting Interface: ISO 4401-03-02-0-05
• Maximum Operating Pressure: 315 bar
• Maximum Flow Rate: 80 L/min
• Hydraulic Fluid: Mineral oil (HL, HLP) to DIN 51524, Viscosity range 2.8 to 500 mm2/s

Label Info

• Brand: Rexroth
• MNR: R900481621
• FD: 88730
• Type: Z2FS 6-2-44/1Q

Application

Ideal for industrial hydraulic applications requiring precise speed control of actuators, such as in machine tools, presses, and manufacturing automation. It can be used for both meter-in and meter-out circuits.

Country of Origin

Made in Germany.

CO2 Impact

Choosing this pre-owned valve saves approximately 3.0 kg of CO2 compared to manufacturing a new one, which is equivalent to the emissions from a 15-kilometer car journey.

Availability

This item is a tested, pre-owned unit in excellent working condition. Available for immediate dispatch. Order now from spareparts2day for expert support and fast delivery.

FAQ

Question?

What is the primary function of a Z2FS series valve?

Answer:

The Z2FS valve is a double throttle check valve used for flow control. It limits the flow in one direction (throttling) for two separate ports (e.g., A and B) and allows free return flow in the opposite direction. It is typically used for meter-in or meter-out control to regulate the speed of hydraulic actuators.

Question?

What is the maximum operating pressure for this specific Z2FS 6-2-44/1Q model?

Answer:

This valve is rated for a maximum operating pressure of 315 bar (approximately 4568 PSI), making it suitable for a wide range of standard industrial hydraulic systems.

Question?

How is the flow rate adjusted on this valve?

Answer:

The flow rate is adjusted via the grub screw located on the side of the valve body. You would typically loosen the lock nut, adjust the screw to the desired setting, and then retighten the lock nut to secure the position.

Last Update: Friday, March 13, 2026

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