Product category:
Gas Services
News Release from: AVK UK | Subject: Donkin Series 594 non-return valves
Edited by the Buildingtalk Editorial
Team on 30 July 2007
Donkin valves stabilise Wembley Stadium
gas supply
Donkin Series 594 non-return valves from Aqua-Gas AVK are helping to ensure correct gas pressures at the new Wembley Stadium.
In order to accommodate the requirement for a standard 25 mbar supply at the large number of locations where gas is needed for cooking and heating, it was decided to boost the pressure up to 200 mbar to maintain comprehensive distribution around the stadium The two Donkin 10" (250mm) cast iron valves are on the worker and standby outlets of the underground booster station, where they prevent the boosted supply feeding back and over-pressurising the low pressure supply from the main"
This article was originally published on Buildingtalk on 22 Jul 2008 at 8.00am (UK)
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"Series 594 valves were selected because of their versatility of application".
"They can be installed on horizontal and vertical pipework, and have O-ring door seals and multi-position counter-balance weights to give a 100% gas-tight non-return seal throughout low- and mid-pressure ranges".
"Suitable for temperatures from -20degC to +200degC, Donkin Series 594/595 non-return valves incorporate a flap-type door supported by self-aligning ball bearings".
"For installations where pulsing conditions are prevalent, valves can be fitted with a rotary dashpot damper".
"Valve bodies are constructed from cast iron (594) or ductile iron (595) in sizes from 150mm (6") to 750mm (30"), and in fabricated steel in sizes of up to 1200mm (48"), with carbon steel doors and stainless steel door spindles.
All valves are CE-marked and comply with the requirements of the Pressure Equipment Directive.
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