Severn Glocon, using their renowned valve engineering capability have provided their 48” Severn Leeds butterfly valves, complete with full anti-cavitation trims for cooling water start up control for the new Jazan refinery that is currently in construction in Saudi Arabia. The Jazan project is a grassroots facility with the anticipated capacity of dealing with 400,000 barrels per day, separating the crude oil into its constituent useable parts such as gasoline, diesel, etc.

To provide the high level of specification to the carry out this critical service effectively they are fitted with anti-cavitation trims and are operated by a QTRCO SG pneumatic spring to open the actuator, with a 316SS positioner and a closed loop breather system to protect the actuator internals from the corrosive effect of a hot saline costal atmosphere.

Using their vast engineering expertise and experience, Severn Glocon assessed the exact requirements of the project, so to protect the valves and downstream pipework from damage the valves have been designed with a special disc to prevent the formation of cavitation.  In addition to this enhanced specification the valve body has a glass flake lining, which is resistant to localised high velocity and protects the body from the corrosive effects of the line fluid.

It is expected that the Jazan refinery will be up and running in 2018, and these valves, which the plant would struggle to start up and run without, are an integral part of the critical service control requirement supplied to the project by Severn Glocon.

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“Severn Glocon had a number of issues to solve in selecting and sizing the right valves for the job, because the valves had to be capable of handling cavitation control at start up, the high normal running Cv, and also a secondary capability to be able to offer isolation. This is why severe service butterfly control valves complete with QTRCO actuation (also a Severn Glocon Group Company) were the best choice.” Comments Ken Winpenny, Severn Glocon Business Development Manager – Butterfly Valves.

Ron Baker, Severn Glocon’s Group Sales Director, reinforces the Groups strength by confirming “We are very proud that we have the ability to not only offer Severn Glocon linear valves for control applications, but also a rotary range that continues to expand our Group capabilities in line with the demands of our customers.”

For more information on Severn Glocon butterfly valves visit

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