The safety function of the new ROSS^® Hydraulic Lockout Valve is to block the flow of hydraulic fluid in order stop cylinder motions.

Energy Isolation is required for all energy sources when performing any maintenance related tasks on machinery. Hydraulic Energy Isolation requires both pump flow and downstream pressure to bleed to tank. The H L-O-X valve accomplishes this safely through its own independent, full-flow exhaust lines.

This is achieved using a manually operated handle that has the capability to accept a lock or hasp to prevent the reapplication of pressure buildup. The valve is tamper-resistant to ensure that the locking out of the hydraulic system cannot easily be bypassed.

H L-O-X Valves have a pressure rating of 414 bar (6,000 psi) and are available in 3 port sizes: 0.5”, 0.75”, and 1.25” with flow rates of 75 l/min, 132 l/min, and /89 l/min, respectively. Each valve is made of carbon steel and includes Delrin and nitrile rubber (Buna-N) seals. A pressure measuring device is also included to confirm the removal of downstream pressure.

Hydraulic Lockout Valves are the latest addition to the ROSS Hydraulic Safety Valve product offering, which also includes Block & Bleed Valve Systems and Block & Stop Valve Systems.

Source: ROSS CONTROLS