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Alcatraz Interlocks presents the world’s smallest multi-turn valve interlock – Type DML-S

27th August 2014

Alcatraz Interlocks B.V. explains how the world’s smallest multi-turn valve interlocks are specially designed to fit on all small types of hand-wheel operated valves such as gate and globe valves, bar stock, screwed or bolted bonnet valves

Alcatraz Interlocks presents the world’s smallest multi-turn valve interlock – Type DML-S
The first key can only be released in the fully open position, whilst the other key can only be released in the fully closed position

They are mounted on multi-turn valves to interlock the locked open and/or locked closed position of the valve. Only if both keys are inserted in the lock portions can the valve be operated.

The first key can only be released in the fully open position, whilst the other key can only be released in the fully closed position.

Their applications include requiring throttling and frequent operation and on/off applications – so called shut off. For example, globe valves or valves with a similar mechanism may be used as sampling valves, which are normally shut except when liquid samples are being taken.

 

Compare the Alcatraz Interlocks to standard multi-turn design

World’s smallest multiturn valve interlocks

Type DML-S

70x105x130

 

Standard valve interlock Type DML 163x123x135mm

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