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| Smith Flow Control Ltd. |
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6 Waterside Business Park
Eastways Industrial Estate
Witham Essex CM8 3YQ
United Kingdom |
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Tel: +44 (0)1376 517901
fax: +44 (0)1376 518720 |
sales@smithflowcontrol.com
www.smithflowcontrol.com |
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| Home » Products » Wheel Operated Valves |
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GL valve (inter)locks suit all types of handwheel operated valves, including gate, globe, and gear-operated valves.
Available in single key (GL1) or double key (GL2) versions, locking the valve in either the open or closed position, or if the GL2 version is specified, the valve can be locked in both the open and closed position. Forming part of a comprehensive range of process interlock safety systems. Available with 'tailor made' concentric mounted bespoke valve attachments.
The interlocks can be fitted to the valve during live process without the need to shut-down the system nor does it compromise the certified pressure envelope of the system.
When used with other SFC interlocks, operators are compelled to follow the correct sequence of operation of all valves within the interlock sequence. The lock incorporates a counting mechanism, which is commissioned after installation to trap and release keys at the desired position.
Externally, the body is permanently marked with the desired plant identifiers or 'tag' numbers. |
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316 Stainless steel construction |
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Linear ‘coded-card’ key design |
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Robust construction |
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Proven reliability in all climates |
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Single or double key versions |
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The key philosophy requires ‘code-bars’ to be inside the lock body, especially chosen to accept only the correct key, which is specific to the process requirements.
When ordering GL interlocks, please provide the details of the valve and your required system operating philosophy. |
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| Where security lock-off devices are required to provide mechanical locking of manual operators, SFC offer a full complement of security and commissioning tools. If sequential control is unnecessary but a secure lock is required, the SFC range of security products can provide the solution you need. |
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Smith Flow Control (SFC) was established in 1985 to provide engineered safety solutions for  hazardous operations in the oil & gas and chemical processing industries.
SFC introduced the coded-card linear-key concept in a range of modular key-operated interlocks to
regulate operator execution of work procedures on any form of host process equipment. Typical applications include every form of valve (including motorised and instrument valves), switches, vessel closures, access guards, pressure and temperature sensing systems and rail/road/sea tanker loading systems.
SFC’s solutions in hazardous processes reduce the scope for operator error and ensure safe continuous plant operation.
Most offshore installations in the North Sea have been equipped with SFC systems as well as the
majority of related onshore processing facilities
Click
here to view the animation
throughout Europe. By 1990, SFC became the generic term for key interlock safety systems in the international oil & gas industry and our client base now includes most of the major operating companies in all five continents. |
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Download here :
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You can download an animation showing a typical actuator system by clicking on the icon |
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You can download a PDF version of the datasheet by clicking on the icon |
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