zonke engineering - industrial equipment - netherlocks thinner

Mechanical Valve Interlocking Systems, Process Interlocking, Valve Control And Lock out / Tag out.

The best safety solution available in terms of interlocking.

Netherlocks, situated in the Netherlands, is a premium supplier of valve safety & control products including mechanical interlocks, valve position indicators, partial stroke testing devices and portable pneumatic actuators. Most accidents in the chemical and oil & gas industries are related to procedures that do not occur frequently and at the same time can have catastrophic influences when performed incorrectly. Netherlocks Systems guarantees adherence to procedures, eliminates human errors, safeguard people and protect both equipment as well as the environment. Netherlocks is a company of the Sofis group.



Typical Applications:

  • Pressure Relief Valves (PSV)
  • Pig Launching and Receiving
  • Decoking
  • Inert Gas Systems
  • Pump Startup
  • Flare Lines
  • Boiler Blow-down
  • 2 out of 3
  • Chemical Dosing Pot


  • HP Fuel Gas Heater
  • Closed Drain Drum
  • Vessel Filling
  • Vessel Isolation
  • Gas Train Alignment
  • Pump Routing