Dr. Breit Pilot-Operated Hydraulic Check Valve

Description

This Dr. Breit 405006.001 is a pilot-operated hydraulic check valve, also known as a non-return valve. It is designed to allow free flow in one direction and block flow in the opposite direction. The valve can be opened to allow reverse flow by applying pilot pressure. This component is essential for load-holding applications, preventing cylinder drift, and securing hydraulic actuators in position.

Specifications

• Type: Pilot-Operated Check Valve
• Manufacturer: Dr. Breit
• Model: 405006.001
• Nominal Size: DN6
• Maximum Operating Pressure: PN320 (320 bar)
• Connection Type: Hydraulic ports for manifold mounting or line integration

Label Info

• Brand: D.BREIT
• Article Number (Art.-Nr.): 405006.001
• Description: RUECKSCHLAGVENTIL (Check Valve)
• Date of Manufacture (Bj.): Week 28, 2020

Application

Ideal for use in industrial hydraulic systems, including machine tools, presses, lifting equipment, and mobile machinery where reliable load-holding and safety are critical.

Country of Origin

Germany

CO2 Impact

By purchasing this pre-owned valve, you help avoid the production of a new one, saving approximately 4.0 kg of CO2. This is comparable to the emissions from a 20 km car journey.

Availability

This item is in stock and ready for immediate dispatch. Order now from PLC2Day for expert support and fast delivery.

FAQ

Question?
What is the function of a pilot-operated check valve?

Answer
It acts as a standard check valve, allowing flow in one direction, but has an additional pilot port. When hydraulic pressure is applied to the pilot port, it opens the valve to allow flow in the reverse direction, which is not possible with a standard check valve.

Question?
What type of hydraulic fluid is compatible with this valve?

Answer
While not specified on the label, valves of this type are typically compatible with standard mineral oil-based hydraulic fluids (HL, HLP) according to DIN 51524. Always verify compatibility with your system's fluid before installation.

Question?
How do I correctly install this valve in my hydraulic circuit?

Answer
Installation should follow the port markings (e.g., A, B) and flow direction indicators on the valve body. Ensure the mounting surface is clean and flat, and use the correct torque settings for any fastening bolts to prevent leaks and distortion.

Last Update: Friday, March 13, 2026

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