Quarter Turn Series Interlocks fit on all type of lever operated valves such as Ball Valves, Plug Valves, 3-way Ball Valves, and Butterfly Valves.
They are mounted on 90° rotating valves to interlock the locked open and/or locked closed position of the valve.
The QTL Interlock series is delivered in 2 sizes; QTL-S and QTL-L.
QTL-S can be used up to 3" diameter manual valves, large size QTL-L can be used for valves from 4"to 6" inch manual operated valves.
Available in Single Key or Double Key models. The Interlock is easily mounted on the valves and valves can be locked in Open or Closed position by removing a Key.
Only if both keys are inserted in the lock portions the valve can be operated. The keys can be released in either Open or Closed Position only. The lever indicates the open or closed position of the valve.
The Interlocks can be fitted on the valve during live process, without the need to shut-down the system, nor does it compromise the certified pressure envelope of the system.
Salient Features of Quarter Turn Lock:-
Manufactured from Stainless Steel (SS 316).
A lever is provided in the various sizes according the application.
Robust, reliable and simple design with minimum parts.
Wide operating temperature range.
One directional key insertion.
Easy and hassle free operation.
Can be fitted to existing site valves without shutting down the plant or making modifications to the valve.
Ergonomic key position.
Trapped Linear key Concept.
Uniquely coded keys for safety of system.
Key codes are recorded, for easy replacement and to avoid use of duplicate keys.
Spare keys and Master keys are available on the request of customer.