Linear keys Process Interlocking

All Netherlocks valve interlocks are equipped with a linear key. The key is easy to use, robust and fully made out of stainless steel 316. Its design assures low maintenance of your interlocks while at the same time being very reliable under severe circumstances.

Valve interlock linear key

Netherlocks offers a master key for emergencies. One master key is available for all locks, group master keys can also be provided for parts of the plant. It is advised to keep the amount of master keys at an absolute minimum in order to keep control and ensure adherence to valve operating procedures.

Q-card – allowing testing after installing valve interlocks

The Q-card is a commissioning key and allows the locks to be opened or closed regardless of the sequence. For example: closes all valves during prepressure testing. After all pressure testing is done, the Q-card will be pulled out and replaced by the properly coded key. This is normally done during commissioning. For safety reasons the Q-card cannot be re-used once removed. The Q-card saves time, money and prevents irritation, without reducing safety. There is no need for master keys or spares during installation and testing, since these could jeopardize the plant safety in a later stage.

Netherlocks master key

Netherlocks offers a master key for emergencies. One master key is available for all locks, group master keys can also be provided for parts of the plant. It is advised to keep the amount of master keys at an absolute minimum in order to keep control and ensure adherence to valve operating procedures.

Master key cabinet

A master key cabinet allows master keys to be locked at a safe, central location, while at the same time keeping them available in case of emergency.

Valve interlock registration

Netherlocks registers all necessary information on every individual lock we supply, including client details and valve tag info such as valve sizes, brands and line numbers. Key codes, serial numbers, lock type and other related information are also registered.

  • In case of future extensions we guarantee that key codes will not be duplicated
  • Lost keys can be easily replaced
  • New valve interlocks that are part of an existing sequence can easily be supplied