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

Avoid loading errors and product contamination

see Rule out loading errors and unwanted product mix by guaranteeing a correct valve line-up.

Guaranteed valve line-ups for optimal protection against product handling incidents.

Incorrect valve line-ups cause errors during product transfer

enter Product transfer in tank terminals are complex procedures. Aligning the right tanks with the loading docks involves the operation of many valves. Mistakes in valve operation lead to loss of containment, spills and product contamination.

Download PDF
Tanker loading oil at a tank terminal
Using valve interlocks avoids contamination in tank storage industries

How to ensure correct valve line-ups?

watch Aligning valves requires the operation of many valves. Commonly these valves are manually operated and are not monitored in the control room.

By electronically monitoring and regulating the operation of your manual valves, you can ensure a correct line-up. You prevent errors leading to spills and contamination with all related costs and reputational damage.


Let us help you avoiding valve line-up errors

The valve line-up system avoids errors

The valve line-up system ensures correct manual valve operations during loading and unloading.

Download PDF

Guaranteed right-first-time operation

With valve interlocks you guarantee that no valve is operated accidentally. They are only unlocked by uniquely coded keys. These keys are only released by the Key Management System upon authorisation by your Control System.

More reliable than full actuation

Our valve-line up system offers better security than complete valve actuation. Through their mechanical key principle, valve interlocks cannot be bypassed. Actuators can be operated in the field through their local controls, outside the control of the control room, bypassing their automated settings.

Limited investment

Compared to full automation, valve line-up systems are very cost effective. They involve relatively low hardware costs, require limited wiring and automation and need considerably less periodic maintenance.

Key management system for process interlocking
Tanker loading oil at a tank terminal

Case study

In the tank storage industry, product contamination during product movements is a common issue. A leading tank storage company managed to avoid product contamination during cargo loading with a dedicated valve-line up system.

I really appreciate the help of the Sofis team in getting this project ready on time. Everything has finally come together into a splendid and smart solution, and we're ready now to move forward and make it work. We are extremely grateful for your constant support and looking forward to continuing to work together.- David Muscat, Assistant Technical Manager, Oiltanking Malta
Thanks to the valve line-up solution we are now able to load 9 more ships per year.- Operations Manager, large independent tank storage company