A standard design of an anti-tamper valve head options
AS-Schneider’s anti-tamper valve head units protect petroleum valves against unauthorised access and unwanted manipulation
Valves play an important role when it comes to the safety of process equipment: Unauthorised access or accidental operation can quickly lead to catastrophic results. However, both these scenarios are easily prevented.
AS-Schneider, the specialist in the field of industrial valves, provides a range of anti-tamper valve head units to allow plant operators to reliably protect their valves against undesired operation.
The standard design of the anti-tamper valve head unit is equipped with a bore and matching AT-key.
The valve can only be operated using this special key. The operator can also lock the bore using a padlock in order to prevent the insertion of the AT-key. This makes it impossible to operate the valve.
It can be securely locked in any position – closed, partially open or fully open, says the company in a statement.
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Anti-tamper valve head options – ‘AT-key lock’ design: |
Valves equipped with the ‘AT-key lock’ design are operated using the built-in T handle key which can be retracted a little way out of the valve head unit. Once it has been retracted, it is no longer in contact with the stem and activation of the valve is no longer possible.
The operator can insert a padlock, which makes it impossible to press in the key again. The valve is now secured against unauthorised access. This design again permits the valve to be locked in any desired position.
AS-Schneider equips its handwheel-operated valves with a ‘locking plate’. This is a metal plate to which the handwheel can be fixed in whatever position is required by means of a padlock.
In this design, only minimum movement of the handwheel is possible. It is particularly effective at preventing the unauthorised closure of valves.
The family-run company, AS-Schneider, was founded in 1875 and with over 350 employees, is one of the leading manufacturers of instrumentation valves and manifolds worldwide. In the market segment for large-bore diesel engine valves such as those used in marine propulsion and the generation of electricity, AS-Schneider says it is even the world market leader. It has its own subsidiaries in Romania, SingaporeDubai (UAE) and Houston (USA) and professional partners in more than 20 countries worldwide.
