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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
Oct 18

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 Control Room oversees and authorises local manual operations. Process data and MOV feedback are used as conditions to determine manual... read more →
  • 18 October 2018
  • Customer stories, News, Safe valve operation
May 16
Tank storage facility

One month countdown to ILTA, Houston, 11-13 June

In exactly one month’s, we time take to floor at ILTA trade show (International Liquid Terminals Association). At stand 973, we will be showing how it is possible to bridge the gap between manual valve operations to full valve automation, using simple and cost effective and solutions. We recognise that... read more →
  • 16 May 2018
  • News
Apr 04
Tanker loading in harbour

We all know the costs of contamination

One of the biggest challenges our tank terminal operators face, is the risks associated with their valve line-ups. It is not unusual to hear of terminals contending with 1 or 2 incidents annually. What are the costs? Direct costs to include product loss and cleaning up: Incorrect valve line-ups can... read more →
  • 4 April 2018
  • News
Nov 13
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 of euros. A cause of contamination is the incorrect line-up of valves between the storage tanks and the jetty, resulting in the loading... read more →
  • 13 November 2017
  • Customer stories, News, Safe valve operation
Nov 06
Valve interlocks are used to safeguard safe boiler blow down procedures

Enforcing safe valve operations in boiler blow-down procedures

For efficient operation of boilers, frequent ‘bottom blow-down’ procedures are required to help remove sludge deposits from within the vessel. Sludge may form from dirt in the water supply or from the water treatment chemicals. Where blow-down occurs on manual valves, a safety interlock system must be implemented to ensure... read more →
  • 6 November 2017
  • Safe valve operation
Nov 06
Valve interlocks are used to secure safe ethylene cracking.

Securing safe ethylene production with the use of valve interlocks

Ethylene production is an inherently complex and dangerous process, particularly when considering the operation of valves and/or line blinds around a cracking furnace. The incorrect operation of the controls to gas, feed stock and decoke air to the furnace can have catastrophic results. Under normal conditions, the operation of controls... read more →
  • 6 November 2017
  • Safe valve operation
Nov 06
Valve interlocks on pressure safety valves

Safety Relief Systems; securing an open path to relief at all times

An open path to relief must be maintained on Safety Relief Systems at all times during work exercises. A spare relief capacity, enables continuous production while maintenance procedures take place, and eliminates the need to isolate and shut down the whole process. Typically, twin or multiple safety relief valve systems... read more →
  • 6 November 2017
  • Safe valve operation
Oct 09
Valve interlock start key release is based on key detection and compressor inputs

Valve interlock key panel for SBM releases start key based on key detection and compressor input

SBM reaches new levels of pigging safety using valve interlocks managed by a sequence control panel. This electronic panel manages start key release, based on compressor input signals and key detection. FPSO From the construction of FPSO ‘Cidade de Ilhabella’ three years ago, SBM implements Netherlocks interlocks and an electronic... read more →
  • 9 October 2017
  • Safe valve operation
Sep 22
Sofis supplied valve interlocks for the Lower Fars project

Sofis to supply 4,500 valve interlocks for Kuwait Oil Company

Sofis is to supply 4,500 valve interlocks to an EPC contractor delivering the first phase of a heavy oil development programme for the Kuwait Oil Company (KOC). The interlocks will mainly be fitted to pressure safety valves and pig traps. EPC contractor chooses Sofis for Kuwait Oil Company project The... read more →
  • 22 September 2017
  • Company, News
Sep 08
How to open a Netherlocks interlock locked open valve

How to operate a locked-open valve and a locked-closed valve

In order to operate a valve equipped with a Netherlocks interlock from a locked-open to a locked-closed position, you first need the 'open' key for that particular valve interlock. The 'open' key code is hard dye stamped into the key, as well as the right-hand front side of the lock... read more →
  • 8 September 2017
  • 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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