Yale VHM Throttle & Shut-Off Valves ? 700 Bar Hydraulic Flow Control Valves

Description

The Yale VHM throttle and shut-off valve range provides precise hydraulic flow control and secure line isolation in high-pressure hydraulic systems operating up to 700 bar. These compact, robust valves are particularly suited to multi-cylinder installations, where controlled oil distribution and safe shut-off are essential for stable and synchronised lifting operations.

Whether used to isolate individual hydraulic lines or to finely regulate oil flow, the VHM series delivers dependable performance in demanding industrial environments. The valves are engineered to support safe load handling, reduce system instability and improve overall control during lifting, lowering and positioning tasks.

Function and operating principle
The VHM valves are installed directly into hydraulic lines and perform two key functions:
Shut-off of hydraulic flow to isolate individual cylinders or sections of a hydraulic circuit
Throttling of oil flow (VHM-1-E) to control cylinder speed, particularly during lifting and lowering operations

The VHM-1-E needle valve allows the operator to precisely restrict oil flow, making it ideal for applications requiring smooth, controlled piston movement and minimised shock loading. This is especially beneficial in lifting and jacking systems where load stability and accuracy are critical.

The VHM-2 shut-off valve is designed primarily for on/off isolation, enabling safe disconnection, maintenance or controlled operation of multiple hydraulic cylinders within a shared system.

Model variants
VHM-1-E ? Throttle / needle valve
Allows precise throttling of hydraulic oil flow
Ideal for controlled lifting and lowering applications
Supports smooth cylinder movement and improved load stability

VHM-2 ? Shut-off valve
Designed for complete hydraulic line isolation
Especially suited for multi-cylinder systems
Enhances safety during operation, maintenance and system configuration

Typical applications
Multi-cylinder lifting and jacking systems
Load positioning and levelling operations
Synchronised lifting installations
Hydraulic presses and test systems
Temporary isolation of hydraulic circuits
Flow regulation in high-pressure hydraulic lines

Safety & user instructions
Ensure valves are correctly installed in line with flow direction.
Never exceed the maximum operating pressure of 700 bar.
Use the throttle function gradually to avoid sudden load movement.
Always isolate and depressurise the hydraulic system before maintenance.
Regularly inspect valves for wear, contamination or leakage.