I have a Powermax 155x combi boiler and my plumber tells me that I need a prv (pressure release value ~ I think). Struglling to find parts online anywhere, any assistance very much appreciated.
Can buy from a shop if necessary, I am based in the West Midlands area.

S Green, December 2009

try parts centre http://www.partscenter.co.uk/parts/index.html
the part number you need is 481404

Ian, December 2009

http://www.powermax-repairs.co.uk/

P, December 2009

Your boiler was first manufactured in 1996 and is allegedly still being made...

http://www.homeheatingguide.co.uk/efficiency-tables.php?model=008140

http://www.miketheboilerman.com/powermax.htm

tells that Baxi-Potterton now own the Powermax brand...

Spares may be had from several on-line suppliers and yellow pages may help under plumbing supplies - some specialist plumbing suppliers have associated specialist boiler parts stockholder outlets - where you boiler engineer buys his bits.

Good luck...

Peccavi, December 2009