27 May, 2022

Rotork emergency shut-off solution protects pipelines on motorway bridge

15 February, 2017

The Sundsvall Bridge in northern Sweden carries the European Route E4 motorway, spanning a coastal cove to bypass the city of Sundsvall. Opened in 2014, the 2.1km bridge also carries two 400mm diameter district heating pipelines which are now protected by an emergency shut-off system incorporating Rotork pneumatic actuators.

A quick and reliable shut-off solution on either side of the bridge was required to ensure that no damage occurs if one of these pipes bursts inside the bridge. To meet this requirement Rotork has supplied GP, RCG and RC200 scotch-yoke actuators and control panels.

The spring-return heavy-duty GP actuators are fitted to DN400 ball valves installed on the main pipelines at each end of the bridge. In an emergency, these actuators will shut the valves in one second. To reduce the strain on the main lines when this occurs, bypass lines are fitted around the main pipeline ball valves.

Valves on the bypass lines are fitted with RC260 compact double-acting actuators. Speed restrictors on these actuators increase their valve closing times to 40 seconds, minimising the risk of excessive water-hammer in the pipeline system during an emergency shut-off.

In addition to the emergency shut-off valves, four valves are installed on each side of the bridge to control the routine flow of water. These are fitted with compact double-acting RCG100 actuators on the main lines and RC260 actuators on the bypass lines.


Buyers' Guide Search
Search for UK supplier by name
Browse by Product Group.
APRIL/MAY 2022 Issue To view a digital copy of the APRIL/MAY 2022 issue of Hydraulics & Pneumatics Magazine, click here.

MARCH 2022 IssueTo view a digital copy of the MARCH 2022 edition of Hydraulics & Pneumatics Magazine, click here.

For a FREE subscription please click here

July/August 2021 Annual Buyers' GuideTo view a digital copy of the JULY/AUGUST edition of Hydraulics & Pneumatics Magazine, click here.

For a FREE subscription please click here

BFPA YearbookTo read the latest BFPA Yearbook, click here
Talking Industry events in 2021Talking Industry Events in 2021
BFPA Training AcademyClick the image to go to the BFPA Training Academy website
Compressed Air & Vacuum Technology Guide 2018To read the official BCAS Compressed Air & Vacuum Technology Guide 2018 click here
Offshore Europe JournalOEE
Super Swivels
Impulse Automation Limited was established in 1960 and is based in the United Kingdom. We are an importer and distributor of mechatronic components used in a wide variety of industry sectors.Impulse Automation Limited
Hy-Pro FiltrationWEB LOCATOR