Hydraulic Double Pilot Operated Check Valve – 1/4", 3/8" and 1/2"

Hydraulic Double Pilot Operated Check Valve (1/4" – 3/8" – 1/2")

This hydraulic double pilot operated check valve is designed for reliable load holding and precise control in professional hydraulic systems. Available in 1/4", 3/8" and 1/2" port sizes, it is ideal for tractors, agricultural machinery, construction equipment and industrial hydraulic applications where safety and controlled cylinder movement are essential.

Product description

The double pilot operated check valve allows oil flow only when pilot pressure is applied and locks the load securely when the pilot pressure is removed. It provides bi-directional control for hydraulic cylinders, preventing unintended movements and ensuring safe positioning. Thanks to its compact, robust design and multiple port sizes (1/4", 3/8", 1/2"), this valve can be easily integrated into a wide range of hydraulic circuits.

Main features

• Double pilot operated check valve for safe load holding.
• Available in 1/4", 3/8" and 1/2" port sizes for flexible installation.
• Bi-directional control for A and B cylinder lines.
• Prevents unwanted cylinder movement and load drop.
• Low internal leakage with precise opening and closing characteristics.
• Robust body suitable for high-pressure hydraulic systems.
• Compact in-line design, easy to install and maintain.

Technical specifications

How it works

In normal condition the valve remains closed and blocks the hydraulic load in position. When pilot pressure is applied on one side, the corresponding check valve opens and allows controlled flow, so the cylinder can move smoothly in the required direction. When pilot pressure is removed, the valve closes again and locks the load safely. The double pilot design provides secure control in both directions of cylinder movement.

Applications

• Hydraulic systems on tractors and agricultural machinery.
• Front loaders, rear linkage and lifting implements.
• Construction and material handling equipment.
• Hydraulic lifting platforms, cranes and hoists.
• Industrial presses and production machines.
• Any hydraulic circuit requiring safe load holding and position locking.

Advantages

• Improved safety by preventing sudden load drop in case of hose failure.
• Secure cylinder position holding, even under heavy loads.
• Smooth and controlled release of the load with pilot pressure.
• Long service life thanks to durable body and quality sealing elements.
• Multiple port sizes (1/4", 3/8", 1/2") for easy integration into existing hydraulic systems.

Installation and maintenance tips

• Install the valve as close as possible to the hydraulic cylinder for maximum safety.
• Clean hydraulic lines thoroughly before installation to avoid contamination.
• Use the correct hydraulic oil recommended by the equipment manufacturer.
• Check all fittings and connections for tightness before pressurising the system.
• Inspect the valve regularly for leaks, wear and damage as part of normal maintenance.

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Why choose this valve?

This hydraulic double pilot operated check valve is a professional solution for safe load holding and precise cylinder control in modern hydraulic systems. With port sizes from 1/4" to 1/2", it offers excellent flexibility, high safety and reliable performance for agricultural, construction and industrial applications.