Latching system QL

When you need to lock off your quarter turn manual valves, QL Valve interlocks are a smart choice. Designed to suit all types of lever operated valves (ball, butterfly, and plug valves) they are mounted onto your valves to ensure your operators follow the correct process steps. They are available in single key (QL1) or double key (QL2) versions, locking the valve in either the open, closed, or both open and closed position.