Cold Feed Common questions
Martin Smith an emergency plumber Bury explains about cold feed. Here is a list of question below that many find themselves asking.
- How should the cold feed to the toilet cistern be connected?
- Should there be an Isolator on the cold feed to the toilet?
- Which side should the cold feed be?
- Can I have the cold feed for the toilet from a gravity fed tank?
- What size is the cold mains feed to the toilet/basin or bath?
- Is it ok to use push fit on the cold feed?
- What is the maximum pressure of the cold feed to the toilet?
How should the cold feed to the toilet cistern be connected
The cold feed to the toilet cistern should have a direct pipe with no bend at all. As shown in the picture above, it is a typical way of how to connect a cold feed directly to the toilet and how not to. If a flexiblem fitting is fitted, it should only be to the manufactures guarantee and not have type of strain on it.
Should there be an Isolator on the cold feed to the toilet
On every toilet fitted in or outside the bathroom should always have an isolation valve. The only time the cold feed does not require an isolation is, if there is no physical way to get to any of the pipework for example; the pipework goes directly into the wall or the void does not have an access point. Anything that is screwed in or clipped in such as cupboard space is accessible. Any boxes that is nailed in is unaccessible.
Which side should the cold feed be
On the toilet the cold feed can be any side but if there is a hot tap included then the cold feed has to always be on the right due to the health and safety act with disabled occupants.
Can I have the cold feed for the toilet from a gravity fed tank
You can have a gravity feed to the toilet of any other appliance as well as having the cold feed coming from your mains water supply.
What size is the cold mains feed to the toilet/basin or bath
On most toilets the cold feed should always come in 15mm pipe however, some toilets that go back to the wall with no access may have 10mm pipe.
Is it ok to use push fit on the cold feed
It is ok to use john guest push fit on the cold water feed as the maximum pressure can be up to 10-bar before it exceeds the guarantee status.
What is the maximum pressure of the cold feed to the toilet
The toilet has to be built to expect a pressure in line with the home which is normally at about 10-bar.
If you have any more questions when it comes to water main pressure then feel free to give Martin a call in the above contact. If you feel you have any good information that you would like to add to this article then please email us at emergency firstname.lastname@example.org
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