BOSCH REXROTH Z2FS 16-31/RE R900459907

Bosch Rexroth Z2FS 16-31/RE Double Throttle Check Valve

Description

This is a used but fully functional double throttle check valve, model Z2FS 16-31/RE, from Bosch Rexroth. As a sandwich plate valve of size NG16 (CETOP 7), it is designed to be mounted between a directional valve and its subplate. It controls the flow rate by throttling in one direction and allows free flow in the opposite direction. This valve is ideal for controlling the speed of hydraulic actuators. Both ports A and B are independently adjustable via screw-type controls with lock nuts.

Specifications

• Manufacturer: Bosch Rexroth
• Type: Z2FS 16-31/RE
• Part Number: R900459907
• Valve Type: Double Throttle Check Valve
• Design: Sandwich Plate
• Nominal Size: NG16 / CETOP 07
• Maximum Operating Pressure: 315 bar
• Maximum Flow Rate: 200 l/min
• Adjustment: Screw with lock nut

Application

This valve is commonly used in industrial hydraulic systems to control the velocity of cylinders and motors. Its sandwich plate design allows for easy integration into existing valve stacks, saving space and reducing piping.

Country of Origin

Made in Germany.

CO2 Impact

Opting for this pre-owned valve prevents the emission of approximately 12 kg of CO2, which would have been generated during the production of a new one. This saving is comparable to the energy needed to charge a smartphone over 1400 times.

Availability

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

FAQ

What is the function of a Z2FS valve?

A Z2FS valve is a double throttle check valve. It allows you to control the fluid flow rate to or from an actuator in both directions (e.g., extend and retract a cylinder) independently. Flow is restricted in one direction (adjustable) and flows freely in the other via a check valve.

How do I identify if this NG16 valve is suitable for my manifold?

This valve conforms to the NG16 / CETOP 7 mounting pattern. You should verify that your directional control valve and subplate or manifold block also have this standard interface. The port locations (P, T, A, B) and bolt pattern are standardized for this size.

What is the difference between meter-in and meter-out control with this valve?

Meter-in control is achieved by placing the valve to restrict flow *into* the actuator, controlling its speed. Meter-out restricts flow *out of* the actuator. By changing the valve’s mounting orientation by 180 degrees, you can switch between meter-in and meter-out control for both work ports.

Last Update: Friday, March 13, 2026

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