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Switch Off valves
Our shut-off valves for hydraulic systems reliably interrupt the oil flow and protect your equipment by providing a pressure-free return to the tank when the preset pressure is reached. Thanks to the simple flange mounting design, many models are compatible with hydraulic motor series CPM, CPRM, and CPMS, as well as with products from other manufacturers such as Danfoss, M+S, White, Eaton, SAM/Brewini, or Hydraulik Nord of these series. Learn more...
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Typical applications include winches, agricultural machinery, and construction equipment—anywhere a safe shut-off of the hydraulic motor is required. The valves are designed for flow rates up to 60 l/min and operating pressures up to 250 bar; common connections: G 1/2''. Robust housings made of cast iron (GG25) or high-quality steel ensure a long service life; optionally, models with an integrated flow control valve are available.
Hydraulic Shut-off Valves – Frequently Asked Questions
What is the main function of shut-off valves in hydraulic systems?
Shut-off valves stop the oil flow to components or systems. Their function is to intentionally interrupt or release the oil flow in a hydraulic line. They reliably protect systems or components from overpressure by diverting the pump’s delivery flow to the tank without pressure.
Where are hydraulic shut-off valves used?
Hydraulic shut-off valves are widely used in agricultural machinery (e.g. tipping systems, front loaders, tractors), construction machinery (e.g. excavators, cranes, aerial work platforms), and industrial production lines (e.g. printing machines, test benches). Specifically, they are also used to shut off hydraulic motors, for example on winches.
What are the typical performance specifications for shut-off valves?
The pressure ranges of shut-off valves typically cover 10 to 700 bar. The flow capacity ranges from small 10–15 l/min up to well over 100 l/min for industrial applications. Specific valves for hydraulic motors are designed for a maximum operating pressure of 250 bar and a maximum flow rate of 60 l/min.
What are the advantages of using shut-off valves?
- Precise control of the oil circuit
- Protection against system overload
- Increased safety and reliability
What materials are shut-off valves typically made of?
Shut-off valves are usually made of high-quality steel (often hardened) or stainless steel to withstand high pressures and aggressive media. Seals are made from materials such as NBR or FPM.
What criteria are decisive for selecting the right shut-off valve?
- Maximum system pressure and required shut-off pressure (with safety margin)
- Maximum flow rate
- Suitable connection sizes and design
- Compatibility of materials with the hydraulic fluid used
What maintenance work is required for hydraulic shut-off valves?
Maintenance includes regular visual inspection for leaks, checking the switching function and seals. Seal replacement or readjustment of the shut-off pressure can usually be performed while the valve remains installed.