Smith interlocks
You can minimise your safety risks, by using Sofis Smith interlocks.
You reduce human error, by using interlocks to guarantee your operators follow the correct steps through a key transfer principle.
Your manual valve operations take place in a safe sequence – there are no short-cuts.
The transfer of uniquely coded, linear keys from valve to valve, compel your operators to follow the correct process steps.
You create a safer working environment for your team of operators and those that work with them and downtime is reduced and your plant runs smoothly.
A product for all your process requirements
QL valve interlocks
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
GL valve interlocks
When you need to lock off your multi-turn manual valves, GL Valve Interlocks are a great choice. Designed to suit all handwheel operated valves (gate, globe, and gear-operated) they are mounted onto your valves to ensure your operators follow the correct process steps. They are available in single key (GL1) or double key (GL2) versions, locking the valve in either the open, closed or both open and closed position.
Vessel closure lock
Opening a vessel door can be extremely hazardous. You must ensure the vessel is depressurised before access is gained. When interlocking your vent and drain valves with the closure door, you ensure there is no residual pressure remaining and the vessel is fully isolated. Using interlocks, you can also incorporate all other vessel functions, like purging and flushing. Your operators can open the door, knowing it is safe to do so.
Actuated MOV valves
You may need to integrate your actuators into your valve interlock operating procedures and sequences. Using MOV interlocks, you can regulate the components of an actuator, mechanically locking (blocking) the power switch (supply), the manual override function and position indicator. This product is ideally suited to Pig Launcher/Receiver systems, Scraper Traps and Sand Filter systems.
Sequence Control Unit
With the Sequence Control Unit (SCU) your operators can complete complex operational processes. If you have a process that requires your operators to complete more than one step once, or reverse a process, this is a robust method to ensure that an operation happens safely. To guide your operators, the SCU is placed locally to valve systems and helps your operators follow non linear sequences.
Explosion proof interlock switch
There are many explosive, high risk environments, where you may need to mechanically interlock an electrically operated device. The Explosion Proof Interlock Switch is ATEX certified and provides explosion proof switching to satisfy varying hazardous environmental conditions. You can lock the switch in the ‘on’, ‘off’ or both positions. Switches are available for any zone protection specification.
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