Dual pilot operated check valves – metric and specialized versions

Dual pilot operated check valves, commonly known as hydraulic locks, are a critical safety element in power hydraulic systems. Their main task is to completely and mechanically block the flow of the working medium in both cylinder chambers at rest, preventing uncontrolled load dropping. The valve is unlocked only by a control signal, which eliminates the risk of actuator movement in the event of hose failure or directional control valve leakage. The offered metric valves are characterized by high precision of seat manufacturing, which guarantees long-term tightness and reliability in the most demanding operating conditions.

Dual pilot operated check valves with BSPP inch inlets and M - metric outlets

This product group is a hybrid solution designed for users requiring a combination of hydraulic standards. BSPP (British Standard Pipe Parallel) inch thread inlets guarantee tightness using standard connectors, while metric outlets allow direct integration with pipes and fittings in DIN metric systems. Such an engineering solution is particularly valued when modernizing machines where it is necessary to connect different connection standards without using complicated and expensive adapters. Thanks to its robust construction, these valves ensure stable operation under high pressure, minimizing pressure losses in the system.

Dual pilot operated check valve with banjo-type connection

The valve version with a Banjo connection is a specialized mounting solution that allows direct mounting of the valve on the cylinder port or control block while maintaining the possibility of rotating the connection by 360 degrees. This design significantly reduces the mounting space required for routing hoses, making it an ideal choice in tight spaces for construction and forestry machinery. The Banjo connection ensures a rigid and secure connection to the cylinder, minimizing the number of required fasteners, which translates to higher reliability and easier service. This technical solution, combined with our high-class hydraulic hoses, creates a tight and durable system.

Why choose our components?

• Mounting versatility: A wide selection of thread configurations (BSPP/metric and Banjo) allows for a perfect fit of the valve to the existing installation.
• System safety: Precisely manufactured control mechanisms guarantee secure locking and smooth opening, eliminating vibrations in the system.
• System compatibility: Our products are fully adapted to work with modern hydraulic pumps, which ensures optimal operating parameters of the entire hydraulic system.

Frequently Asked Questions (FAQ)

Are Banjo-connection valves as durable as standard ones?

Yes, Banjo connections are designed to withstand dynamic loads typical of mobile machinery, provided they are correctly installed using appropriate sealing washers.

How to choose a hybrid valve (BSPP/metric)?

Pay attention to the type of thread at the mounting location (supply side) and the standard of hoses/pipes that will lead towards the cylinder (receiver side).

Does using a hydraulic lock affect the cylinder speed?

With correct valve selection, pressure drops are negligible and do not affect the cylinder speed under normal load conditions.