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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
Jun 10
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 dedication to problem-solving in a rapidly evolving industry. As Sofis marks 40 years of linear key valve interlocking, Darren’s story... read more →
  • 10 June 2025
  • Company, News
May 19
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 partners for over two decades, but their roots run even deeper. Joe Hischar, Managing Director at Teksal, vividly remembers the... read more →
  • 19 May 2025
  • Company, News
May 19
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 on industrial safety. The origins of valve interlocking "The concept of interlocking goes back to the early days of the... read more →
  • 19 May 2025
  • Company, News
May 07
Cruise ship

Guaranteeing safe and sustainable Hydrogen powered shipping

Hydrogen is a clean, sustainable alternative to traditional fossil fuels. However, adopting hydrogen as a marine fuel involves overcoming significant technological and regulatory hurdles. The sHYpS project addresses this challenge by developing a swappable liquid hydrogen storage system. This solution is designed to enable vessels to efficiently exchange empty hydrogen... read more →
  • 7 May 2025
  • Customer stories, News, Safe valve operation
Apr 08
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 industry by providing a solution that allowed valves and other equipment to be integrated into process safety systems without requiring... read more →
  • 8 April 2025
  • Company, News
Mar 18
LNG tanker unloading using unloading arm

Securing LNG operations: How valve interlocking systems are the last line of defense

The LNG industry operates in a high-risk environment where safety, reliability, and precision are paramount. Advanced valve interlocking solutions prevent operational errors, enforce correct valve operation sequences, and integrate seamlessly with safety and process control systems. Valve interlocking systems help LNG facilities maintain operational integrity, reduce risks, and optimize efficiency,... read more →
  • 18 March 2025
  • Safe valve operation
Mar 03
FlexiDrive remote valve operator for precise water release on a dam

Enhancing water management with Sofis FlexiDrive: A smart solution for remote manual valve operation

Effective water management is crucial for the sustainable operation of reservoirs and dams. However, traditional methods often present challenges that can lead to inefficiencies, excessive water discharge, and safety risks for operators. In a recent project at a Texas dam with a 1,350-acre reservoir, Sofis, in collaboration with their partner... read more →
  • 3 March 2025
  • Customer stories, Remote manual valve operation
Dec 02
Water treatment plant

Enhancing safety in water treatment by preventing Oxalic Acid contamination

The global supply of clean water is facing unprecedented pressure due to industrialization, growing demand, and increasing biological and chemical contamination. This strain presents a serious threat to the environment, public health, and the well-being of both current and future generations. Water treatment facilities play a critical role in delivering... read more →
  • 2 December 2024
  • Customer stories, Safe valve operation
Nov 25

Enhancing safety at liquid hydrogen loading stations through collaborative innovation

Sofis recently partnered with a leading customer in the Botlek area of Rotterdam, The Netherlands, to tackle a critical safety challenge at their liquid hydrogen loading stations. The objective was to reduce risks during hydrogen trailer loading operations in ATEX Zone 1, where safety and precision are essential. Addressing potential... read more →
  • 25 November 2024
  • Customer stories, News, Safe valve operation
Oct 29
Valve interlocks installed in an aluminum process facility

Enhancing process safety with valve interlocks: avoiding incidents in the alumina industry

In process industries, the consequences of over-pressurization incidents can be catastrophic. A notable example in the oil and gas industry is the Piper Alpha disaster, where incorrect handling of pressure relief systems contributed to massive loss of life and assets. In the alumina industry, similar risks exist, as shown by... read more →
  • 29 October 2024
  • Customer stories, 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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