Product category:
Valves and manifolds
News Release from: Honeywell Water Controls | Subject: RPZ valves
Edited by the Processingtalk Editorial
Team on 26 July 2005
Protecting public water supplies at
Coors Brewery
The biggest brewery in the UK has installed 15 RPZ (reduced pressure zone) valves from Honeywell to ensure water cannot flow back into the mains in the unlikely event that the supply pressure falls
Honeywell valves at Coors Burton brewery protect public water supplies from contamination The Coors Burton Brewery - the biggest brewery in the UK - has installed 15 RPZ (reduced pressure zone) valves from Honeywell to ensure water cannot flow back into the mains in the unlikely event that the supply pressure falls
This article was originally published on Processingtalk on 25 Nov 2004 at 8.00am (UK)
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Each Honeywell RPZ valve discharges water automatically from the process side if the mains water supply pressure should drop, rather than allowing it to enter the mains.
Coors explains that while a physical break tank costs about the same to install as an RPZ valve and its filter, the tank requires regular chemical dosing and cleaning to protect against legionella, which makes it a far more expensive and time-consuming option than an RPZ valve.
The brewery takes safety and environmental concerns very seriously.
Further reading
A simple solution to cut water wastage
Water consumption in domestic and commercial premises can be reduced greatly simply by fitting a Honeywell pressure reducing valve
Protecting water systems from excessive pressure
The Honeywell D06 pressure reduction valve is ideal for protecting water installations from excessive supply pressures up to 25 bar, delivering an adjustable pressure, pre-set from 1.5 to 6 bar
"We took early action to ensure compliance with the Water Supply (Water Fittings) Regulations" explained Troy Lee, Facilities Manager.
"Our team comprised experts from British Steam Specialties, the Honeywell Water Controls business, our water supplier (South Staffordshire Water), and Coors.
"The team examined each possible violation where backflow into the mains was possible and how we would prevent it.
These ranged from hose pipes and hose reels to physical cross-connections.
We decided to separate water supplies across the site into departmental zones, each supplied via a Honeywell RPZ valve".
Each Honeywell RPZ valve is inspected, set up and certified annually to comply with regulations.
The Honeywell valves feature triple security to provide optimum protection against back pressure and back siphonage: two check valves and a discharge valve divide the unit into three chambers, each providing a separate pressure zone.
Maintenance is simple, as there is unrestricted access to all internal components and the discharge valve is mounted on the underside.
The work is carried out by a Burton-based sub-contractor, Smiths International, and certification is provided to South Staffordshire Water.
The only routine maintenance is to back-flush a Honeywell filter, which protects each valve, every eight weeks to remove any residues.
Any RPZ valve seen to be dumping would be checked to ensure correct operation.
The Coors Burton Brewery produces over 5 million barrels of beer annually including Grolsch, Coors and Carling, the UK's best selling beer.
The brewery history can be traced back to 1744 when William Worthington started brewing in Burton.
Coors Brewers is part of the Molson Coors Brewing Company- the world's 5th largest brewer.
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