The 10P, 20P, and 30P type check valves are direct-acting hydraulic check valves designed to allow free flow in one direction and completely block flow in the reverse direction. They are widely used in hydraulic circuits for pump protection, load holding, backflow prevention, and system pressure isolation. These valves are ideal for industrial, mobile, and construction hydraulic systems requiring reliable one-way flow control.

Working Principle

The 10P / 20P / 30P check valves operate automatically without external actuation:

• Forward Flow: When inlet pressure exceeds the cracking pressure, the valve poppet opens, allowing flow with minimal resistance.
• Reverse Flow: When flow attempts to reverse, the poppet seats, blocking the passage completely to prevent backflow.

This simple yet robust mechanism ensures one-way flow control and prevents reverse pressure from damaging pumps or actuators.

Product Features

• Direct-acting hydraulic check valve design
• Reliable blocking of reverse flow
• Free flow in forward direction
• Compact and robust construction
• Low pressure drop due to optimized internal design
• Available in multiple nominal sizes (10P, 20P, 30P)
• Multiple cracking pressure options
• Threaded or cartridge mounting
• Suitable for high-pressure hydraulic systems
• Long service life and minimal maintenance requirements