sk1500-3 piston fitting
Unfortunately there is no fitting instructions for this
However this is an exploded view of the valve
http://www.showerdoc.com/shower-spares/sirrus-by-gummers/GUM-PARENT-34-Sirrus-1500---Thermostatic-Shower
Once you unscrew the main body of the valve the first thing that should comeout is the thermostat capsule just watch that the new one goes back in the sameway round .....With the with the steel pin facing out ...To you and the brassbody sitting in the piston
When you have it stripped this far down make sure that youclean and grease the piston with silicon grease
The piston should just fall out or it may need a wiggle.
Take photos as you go.
http://www.showerdoc.com/tools-and-fittings/plumbing-consumables/MCSILICONE-Silicone-Grease-Tub-30ml
Answered 12 years ago by The Shower Doctor
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