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

Smart Valve Operations

Improving Plant Efficiency And Operator Safety

See our solutions
Giving You Choice of Smith Flow Control or Netherlocks Valve Interlocks

Helping You With Your Valve Operation Challenges

Helping You Minimize Errors in Loading And Risk Of Contamination

You can ensure that your manual valves are correctly lined up by the electronic issue of interlock keys. This means your operators will only ever be able to access a key when it is timely and safe to do so. Correct valve line-up is assured. Human error resulting in spills and contamination, with its related costs and reputational damage is avoided.

See how you can improve valve line-ups
Using valve interlocks avoids contamination in tank storage industries
Valve interlocks are installed on valves by service engineers

Helping You Out In The Field

Whatever your challenge, we will work with you to ensure your interlock installations run as smoothly as possible. As our customer, we can provide you with a number of different services, each tailored to your needs.

  • Surveys of your installed interlock base
  • Technical training (in-house and in-field)
  • Maintenance and installation
  • Commissioning and supervision
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We Share Our Expertise

By working with us, you immediately benefit from over thirty years of experience in crafting smart valve operations. As specialists in the valve interlock market, our wealth of knowledge is second to none. We have had the pleasure of working with major end users across the globe to help make their valve operations safer and more efficient.

You can ask us to help you with any of the following:

  • Participate in HAZOP studies
  • Assist with interlock sequence design
  • Develop customized process safety products
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Valve interlocks avoid human error

Our References

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How can we help you?

Benefit from our knowledge and expertise to optimize your valve operations. We have extensive application experience with over 30 years of operation. Let us know what support you need and we will get back to you with a prompt response.

Get direct support

Call directly +31 (0)172 471339