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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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High pressure vs. low pressure ball valves.
Hi,
The ball valve in our cold water header tank seems to be causing some knocking and generally seems to be due for a change (intermittent overflow for example). In my local B&Q there are two varieties of valve: high and low pressure. My Collin's DIY manual gives no guidance on this subject so I'm wondering if there is some decisive factor in which to use. The house is a normal two storey semi with a good mains pressure. Thanks in advance for any advice, Peter. |
#2
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High pressure vs. low pressure ball valves.
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#3
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High pressure vs. low pressure ball valves.
On 27 Mar 2006 07:35:40 -0800, "
wrote: Hi, The ball valve in our cold water header tank seems to be causing some knocking and generally seems to be due for a change (intermittent overflow for example). In my local B&Q there are two varieties of valve: high and low pressure. My Collin's DIY manual gives no guidance on this subject so I'm wondering if there is some decisive factor in which to use. The house is a normal two storey semi with a good mains pressure. Thanks in advance for any advice, Peter. Low pressure types are intended for toilets etc. that are filled from the roof tank. For the mains feed to the roof tank, a high pressure valve should be used unless the mains pressure is really low. Since you are changing, it would be a good opportunity to fit an equilibrium float valve such as a Torbeck. These are quite inexpensive and as well as operating a lot more quietly than the traditional Portsmouth type, have a clean shut off. -- ..andy Posted Via Usenet.com Premium Usenet Newsgroup Services ---------------------------------------------------------- ** SPEED ** RETENTION ** COMPLETION ** ANONYMITY ** ---------------------------------------------------------- http://www.usenet.com |
#4
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High pressure vs. low pressure ball valves.
p_telford wrote:
The ball valve in our cold water header tank seems to be causing some knocking and generally seems to be due for a change (intermittent overflow for example). In my local B&Q there are two varieties of valve: high and low pressure. My Collin's DIY manual gives no guidance on this subject so I'm wondering if there is some decisive factor in which to use. The house is a normal two storey semi with a good mains pressure. Thanks in advance for any advice, It's mains pressure, so use the high-pressure cone. The low pressure ones are for gravity-fed stuff (e.g. the bathroom WC). |
#5
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High pressure vs. low pressure ball valves.
The message
from Andy Hall contains these words: These are quite inexpensive and as well as operating a lot more quietly than the traditional Portsmouth type, have a clean shut off. The potential drawback is that where previously you may not have had any resonance as the valve shuts, with a Torbeck type valve you sometimes get a mighty slam as it closes. It's down to loose pipework, and isn't really the fault of the valve, but it's often a ******* to track down where it's loose. -- Skipweasel Pay no attention to that man behind the curtain. |
#7
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High pressure vs. low pressure ball valves.
Hi,
Thanks to everyone who replied. It's really very much appreciated. Time to don my waders I guess :^) Cheers, Peter. |
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