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Sofis valve operation Sofis valve operation
  • Home
  • Products
    • Smith interlocks
    • Netherlocks interlocks
    • Ellis interlocks
    • Key Management System
    • EasiDrive portable actuator
    • Power Wrench portable actuator
    • FlexiDrive remote operator
    • VPI position indicator
    • SiLoC silo loading & unloading
  • Services
  • Solutions
    • Enforce safe valve operation
    • Monitor manual valve positions
    • Operate manual valves quickly
    • Operate manual valves remotely
    • Ensure integrity of critical safety systems
    • Ensure operational efficiency
    • Mitigate effects of human error
  • Applications
  • Industries
  • Customer stories
  • About us
    • Sustainability
    • Certification
    • Sofis: The safest choice
    • Our heritage
    • Vacancies
    • Internships
  • News
    • Download brochures & application notes
    • Sofis Connect newsletter
    • View product videos
  • Contact
Lower fars project

Sofis successfully executes three major projects with a leading EPC contractor, supplying more than 8.560 mechanical interlocks

Over a period of 4 years, Sofis has successfully executed three major projects with an international EPC contractor for an end-user in Kuwait, delivering all three projects within the project... read more →
  • 28 June 2021
  • Customer stories, News, Safe valve operation
Key management system for process interlocking

Evolution in valve interlocks towards integration

Interview with Stephan Sadowski (Head of Business Development) for Valve World, May 2021 edition, page 38-39. Valve interlocks have evolved over the years, from mechanical, stand-alone devices to integrated electrical,... read more →
  • 1 June 2021
  • News, Safe valve operation, Valve position monitoring
Key cabinet for valve interlock keys

Integrating electronics into mechanical valve interlocks

Mechanical valve interlocks guarantee strict adherence to procedure and thus avoid human error. They are particularly useful for operations that are generally recognized as highly dangerous, such as pigging. Valve interlocks... read more →
  • 21 December 2020
  • Safe valve operation
Service engineers installing valve interlocks

The #10 factors that determine a successful installation of valve interlocks

Mounting a single valve interlock is relatively easy from a technical point of view. However, when installing large quantities of interlocking systems for a single project, the execution of such... read more →
  • 28 November 2020
  • Safe valve operation
Operator inserts key in a valve interlock

New Smith and Netherlocks interlocks Quick Fix Guides now available

Following the success of the Netherlocks interlocks Quick Fix Guide, we recently produced the Smith interlocks Quick Fix Guide. Both guides can now be downloaded in the download section of... read more →
  • 20 May 2020
  • News, Safe valve operation
Valve interlock installation

Sofis and partners install more than 1500 interlocks

For one of its customers's projects, Sofis was asked supply installation support, initially for measuring, installing and commissioning more than 1500 Netherlocks interlocks. In the end, Sofis supplied 1610 Netherlocks... read more →
  • 25 March 2020
  • Safe valve operation
Operating heavy manual valves is time consuming

Health and safety in valve operations – Human Factors Engineering (HFE)

Major global operating companies are progressively adopting the human factors engineering (HFE) discipline to ensure quality, safety, and fit-for-purpose equipment and facilities. Human factors are all those considerations that enhance... read more →
  • 18 February 2020
  • Safe valve operation
Valve interlock installation and maintenance

Local Sofis partners to conduct large interlock inspection job at Nostrum Oil & Gas

Engineering staff of Sofis partners Ibemo and Kios are about to conduct a full inspection of all 634 interlocks, installed on the Chinarevskoye field in Kazachstan, one of the main... read more →
  • 20 November 2018
  • Safe valve operation

NordStream pipeline pigging uses an integrated control system designed by Sofis

NordStream is reliant on its control room in Switzerland to monitor and control pig launching operations across their German and Russian pigging stations. To guarantee safe pigging procedures, the Swiss... read more →
  • 18 October 2018
  • Customer stories, News, Safe valve operation
Tanker loading oil at a tank terminal

How a leading tank storage company avoids product contamination during cargo loading

In the tank storage industry, product contamination resulting from product transfer is an obvious risk. Costs related to clean-up, product loss, waste disposal and reputational damage easily mount up to hundreds of thousands... read more →
  • 13 November 2017
  • Customer stories, News, Safe valve operation
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About us

Sofis is a manufacturer of valve operation systems such as mechanical valve interlocks, portable actuators and valve position indicators. We are the world’s largest interlock manufacturer, providing bespoke design solutions that protect people and property throughout the world. We create smart valve solutions that improve process and operator safety to protect people and the planet.

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