Retention valve MT 4119-020 — hydraulic check/retention valve by MT

Retention valve MT 4119-020 is a hydraulic check/retention valve designed to maintain fluid position and prevent backflow in hydraulic circuits. Manufactured by MT, this valve holds actuator position and prevents unintended reverse movement by allowing flow in one direction and locking fluid in the other. The compact design enables integration into mobile machinery, industrial hydraulic systems and actuator circuits where secure holding and backflow prevention are required.

Advantages

The valve provides reliable retention of hydraulic pressure to maintain cylinder or motor position without continuous external control. Its one-way flow characteristic prevents reverse flow and protects system components from unwanted motion. The device is suitable for installation in tight spaces and integrates with standard hydraulic lines, offering consistent performance under varying load conditions.

Suitable for

• Mobile machinery hydraulic circuits
• Industrial hydraulic systems requiring actuator lock
• Lift and lowering control to prevent reverse movement
• Holding loads in cylinders or hydraulic motors

Key specifications

• Function: hydraulic retention/check valve for one-way flow and pressure holding
• Application: actuator locking, load holding, backflow prevention
• Installation: in-line mounting with hydraulic fittings (compatible with standard hydraulic lines)
• Compatibility: suitable for mobile and industrial hydraulic fluids within typical system pressure ranges
• Design: compact, suitable for confined installation spaces

How to use

Install the retention valve in the hydraulic line according to the flow direction indicated on the valve body so that it permits desired forward flow and prevents return flow. Ensure connections are tightened to appropriate torque and that sealing surfaces and fittings match system requirements. After installation, slowly pressurize the system and inspect for leaks; verify that the valve holds pressure and prevents reverse movement of the actuator under expected load conditions.

Usage recommendations

Use clean hydraulic fluid and appropriate filtration to reduce contamination risk. Verify system pressure compatibility before installation and perform periodic inspections for leaks or wear. When integrating into safety-critical circuits, follow the machine manufacturer’s guidelines and applicable standards for hydraulic locking devices.