Single Pilot Operated Check Valves

Hydraulic pilot operated check valves are simply check valves which can be opened by an external pilot pressure. These designs of hydraulic valve are often abbreviated as P.O check valves, and are used in a wide range of hydraulic systems. At Flowfit, we are proud to offer a diverse range of single pilot operated check valves from the renowned manufacturer Oleodinamica Marchesini.

Hydraulic Single Pilot Operated Check Valves

P.O check valves are unique in that they block the flow in one direction, much like other check valves, but can be released as soon as the right level of pilot pressure is applied. This means that, in the absence of the necessary pilot pressure, the poppet within the check valve remains sealed.

Once the required amount of pressure has been introduced, the hydraulic fluid’s free flow is allowed in the reverse direction. This feature is essentially when a system’s dual-acting cylinder needs to be positively locked.

Typically, there are two types of hydraulic pilot operated check valve. These are the threaded cartridge and pilot piston style. Most systems and users will find that these designs of valve work most effectively when in conjunction with a control valve, which allows the valve ports to vent to the tank once it has been centred.

Key Features:

Check Valve Functionality:

• One-Way Flow: Allows fluid to flow in one direction, preventing backflow.
• Automatic Operation: The check valve function operates automatically based on pressure differential.

Check Valve Functionality:

Pilot Operation:

• Pilot Signal: A separate pilot line controls the valve. When the pilot line is pressurized, it opens the valve, allowing flow in the reverse direction.
• Controlled Backflow: The pilot operation allows for controlled backflow, which is essential in hydraulic systems requiring precise control.

Flowfit's Unbeatable Range of Single Pilot Operated Check Valves

Here at Flowfit, the UK’s leading provider of hydraulic components for a wide range of systems, we are proud of our range of hydraulic pilot operated check valves. Each model that we offer has undergone extensive testing to ensure that it offers long-lasting and reliable service, and is available in a range of specifications. You will be able to find the ideal model for your system, amongst the extensive range available at Flowfit.

For more information, get in touch with our friendly hydraulic experts today!