Family member appears to have severe water hammer in high pressure
Santon HW system. The offending item (where the vibration is
concentrated) is the three way valve thingy (about 150 - 200mm wide).
It never happens/can't be reproduce when the installer comes back but
I've heard it first hand and felt the vibartion in that unit.

Pressurised HW systems a bit of a black art. Any ideas what's wrong
and how it can be fixed.

Naffer

Pressurised HW systems a bit of a black art. Any ideas what's wrong
and how it can be fixed.

Liberally spreading shock arrestors through the system might do the trick.
Ensure the pipes are properly clipped, too.

Christian.

On Thu, 26 Jan 2006 10:27:35 +0000, Christian McArdle wrote:

Pressurised HW systems a bit of a black art. Any ideas what's wrong
and how it can be fixed.

Liberally spreading shock arrestors through the system might do the trick.
Ensure the pipes are properly clipped, too.

It might be that the 3-way valve is the pressure reducing valve combined
with either a balanced cold feed outlet or the combined witt the
PReleifValve.
It might simply need and overhaul/replacing.


--
Ed Sirett - Property maintainer and registered gas fitter.
The FAQ for uk.diy is at http://www.diyfaq.org.uk
Gas fitting FAQ http://www.makewrite.demon.co.uk/GasFitting.html
Sealed CH FAQ http://www.makewrite.demon.co.uk/SealedCH.html
Choosing a Boiler FAQ http://www.makewrite.demon.co.uk/BoilerChoice.html