Smith Flow Control and Netherlocks have merged. We are now Sofis.

Ensure safe MOV testing and maintenance

Block physical valve movement to avoid accidental closing during valve testing or valve maintenance.

Safely maintain online MOV’s with a bracket in maintenance blocking mode

Avoid unwanted valve strokes during your valve maintenance work to critical actuators. With our IML actuator lock you ensure that valves remain in their fail-safe position.

  • Physically blocks valve movement
  • Set to maintenance mode with a dedicated operating key
  • Standard configurations according to ISO 5211
Go to actuator lock
Actuator lock for safe valve maintenance
Partial stroke test device for ESD and HIPPS valvesalves

Secure partial stroke testing of ESD valves

Test your critical MOV’s online without the risk of overshooting the test angle. At the same time you can use the FAITH for online MOV maintenance.

  • Custom built bracket and drive-bush
  • Available with any test angle, fully open or closed
  • Allows stroke testing according to IEC61508 and IEC61511
Go to partial stroke test

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