This question is regarding Sirrus/Gummers 1850/968 Series Valve Seal Service Kit with Silicone

Slow water flow through shower

Our shower was installed about ten years ago. The water flow has diminished in recent years: We live in a hard water area. Can this be corrected by using a valve seal service kit or do I need to replace the complete valve assembly.
Asked 6 years ago by Geoff
First check the elbows are not blocked.

With the Sirrus 1800 series that in almost every occasion the first thing to do is give them a strip down clean and lube and fit a service kit, this will cure 85% of any problems and it is also the cheapest thing to do.

If after servicing you find out that it needs a thermostat or piston, nothing is really lost because it almost certainly needed a service in any case.



The 1800

www.showerdoc.com/sirrus-thermostic-cartridge-1850-968-sk1850-2

There is no real difficulty with this valve however it is a little more complicated than the 1500 just take photos as you strip it down you can then refer to them when you are rebuilding.

www.youtube.com/watch?v=mjrwvPjUMCU

www.youtube.com/watch?v=bQnHGckfW-g

Answered 6 years ago by Barrie Seabright

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