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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
Adrian Brown

40 years of innovation: An interview with Adrian Brown

"Before 1985, valve interlocking was quite basic," recalls Adrian Brown, Technical Support Specialist at Sofis. "It was mostly about putting locks on valves in a rudimentary way. Companies like Castell... read more →
  • 15 June 2025
  • Company, News
Darren Trowsdale

Building expertise from the ground up: Darren’s road to technical sales at Sofis

What started as a detour from an IT career became a defining journey in valve interlocking. Darren Trowsdale’s 23 years at Sofis reflect a legacy of loyalty, technical growth, and... read more →
  • 10 June 2025
  • Company, News
Joe Hischar

Celebrating 40 years of safer valve operations: How Teksal and Sofis turned partnership into legacy

This year marks 40 years of linear key valve interlocking, a milestone that underscores the power of long-term partnerships built on safety, trust, and innovation. Teksal and Sofis have been... read more →
  • 19 May 2025
  • Company, News
Ian Binney

The evolution of valve interlocks: A conversation with Ian Binney, Key Account Manager EPC projects

Ian Binney has been a valve interlock specialist since 1982, when he joined Castell. With decades of experience, he has witnessed firsthand the evolution of valve interlocks and their impact... read more →
  • 19 May 2025
  • Company, News
Smith valve interlocks

Sofis celebrates 40 years of linear key valve interlocking – Shaping the global industry standard

April 10, 2025, marks the 40th anniversary of the linear coded key valve interlocking concept, introduced by Smith Flow Control in 1985. The Smith Flow Control valve interlock revolutionized the... read more →
  • 8 April 2025
  • Company, News
Umit Agca

Introducing Umit Agca: Our new Sales Manager Europe

We are excited to announce that Umit Agca has recently taken on the role of Sales Manager Europe at Sofis. Umit’s journey with Sofis began in 2019 as a Project... read more →
  • 1 October 2024
  • Company, News
FlexiDrive remote valve operator for block valve

Efficiently accessing challenging valves: How a Brazilian chemical facility overcame obstacles on a critical thermal oil line

A Brazilian site for a global leader in specialty chemicals and paints had to find a solution for operating difficult-to-access 4" block valves in a thermal oil line, used in... read more →
  • 27 August 2024
  • Company, Customer stories, News, Remote manual valve operation
Valve interlock installation

Vacancies

At Sofis, we are always looking for motivated professionals who share our commitment to safety, quality, and innovation. Even if there are no open positions that match your profile right... read more →
  • 24 July 2024
  • Company
Smith valve interlocks

Valve solutions that lead by example

This article has been issued in "Inside Oil And Gas Magazine": Sofis - Inside Oil & Gas (insideoilandgas.com) Sofis is the leader in creating smart valve solutions, such as mechanical... read more →
  • 24 January 2024
  • Company, News
EcoVadis medal

Recognition for building a greener future!

About a year ago, we started our journey to be the greenest supplier helping to build a greener future. Being in the early stages of our sustainability strategy roll-out, we... read more →
  • 14 November 2023
  • Company, News
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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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