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| Trapped Key Technologies (mGard) - Valve Interlocks |
| FSKI 90L Single, FDKI 90L Double |
| The Fortress FSKI 90L and FDKI 90L range of units has been developed for direct key operation of all quarter turn wrench operated valves. Locking units are available to suit all sizes and classes of valve, and variations will accommodate ball and butterfly valves etc. Interlock units are designed to be fitted directly to valves in place of the normal handle or wrench. No dismantling or modification of the valve or welding of brackets etc., is needed thus preserving manufacturers warranties. Units are manufactured to suit each different valve and can be fitted easily, either in the workshop or with the valve in line and, without validating pressure tests. |
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| FSKI GG Single, FDKI GG Double |
| The Fortress FSKI GG and FDKI GG range of units has been developed for interlocking all gearbox operated valves. Locking units are available to suit all sizes and types of gearbox, including those for, gate globe and diaphragm valves etc. Interlock units are designed to be fitted directly to gearboxes in place of the normal handwheel if required. No dismantling or modification of the valve or gearbox is needed thus preserving manufacturing warranties. Units are manufactured to suit each different valve or gearbox and can be fitted easily, either in the workshop or in the field. |
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| PVU - Key Operated Pneumatic Valve |
| A pneumatic valve, operated and driven directly by a key interlock mechanism. |
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