I live in the UK and I have a Medway Main water heater supplying all
the taps in the house and a shower. The shower has a Thermix Mk2
shower valve and a Deneve water governer in the cold pipe between the
water heater and the shower. After the shower has been running for
about a minute the flames in the water heater will die down and then
this is followed by a noise and vibration from the Thermix valve that
sounds and feels as if a piston is moving violently inside it every
few seconds and this eventually becomes a loud whine.
I would get a new mixer valve except that the problem may not be in
the valve. Can anyone offer suggestions please. I cant find out
who manufactured the Thermix so as to ask them.
I don't live in the UK. But you mention a mixing valve and your water
heater flame. The two should have nothing to do with one another. The
flames are controlled by the thermostat on the water heater. The water
temperature is regulated through a mixing valve.
The whining sound you mentioned sounds like you may have garbage in
the mixing valve. The type I use can be take apart and cleaned. That's
the cheapest fix if this particular brand allows you to take it apart.
If it is installed with unions, even if you replace the whole valve,
it's still a fairly cheap fix. If you were in the states I would
advise you to be sure to use a "whole house" mixer and not
accidentally install a "single use" mixer. I assume the same would
apply in the UK.
good luck with it.
On Mon, 23 Feb 2004 07:27:29 GMT, firstname.lastname@example.org wrote:
Many shower mixers, particularly not the flush type have water connections
at the same standard spacing as a bath mixer tap. It is often just a simple
straight swap for a new mixer.
Obviously, you do need to check that the connections are standard, though.
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