Shower Repairs - faulty non-return valves.

Subscriptions

You are not subscribed to this blog.

Recent Entries

It's no longer necessary to call separate trades people to get your 'to do' list done. Silver Saints will send you one multi-skilled and very experienced handyman who can take care of all your Plumbing, Electrical, Fitting &Fixing.

20th April 2010

Shower Pump Repairs

Its true to say that certain types of jobs occur in batches. One week we will have a long run of draught proofing of sash windows, usually following a particularly cold weekend, and another we will seem to get a lot of shower repair requests.

27th March 2010

London Plumber

Silver Saints Handyman Service undertake a huge range of plumbing repairs and installations. Given that we are almost 50% cheaper than your average specialist London plumbing service

27th March 2010

Silver Saints Handymen Can Solve All Your Problems

If you are looking for the best handyman service in London, Silver Saints are the professionals to contact. Our team of experts can handle a vast range of plumbing, electrical, fitting, fixing, or assembling projects.

27th March 2010

Sash Window and French Door Renovation

Our Silver Saints handymen change sash cords and draught proof sash windows and French Doors on a daily basis. But if your windows need a bit more attention we also offer a full renovation service.

12th July 2009

Bloggers

Silver Saints (owner)
40 entries

Archive

Shower Repairs - faulty non-return valves.

Blog: London Handyman Service
Posted by: Silver Saints Tuesday 28th April 2009, 3:31pm

Silver Saints cover a massive range of plumbing jobs. One of our more specialist jobs is the repairing of faulty thermostatic showers and electric showers.

Silver Saints cover a massive range of plumbing jobs. One of our more specialist jobs is the repairing of faulty thermostatic showers and electric showers.

In fact we have repaired and fitted hundreds of showers. We recently had two showers at separate properties within a week which proved to have the same unique fault. Both showers appeared to only be getting hot water. On the lowest temperature setting no water would flow at all. We originally thought that there must be an airlock in the cold supply as both showers were been supplied by a tank in the loft. But after a bit of investigation we found that the non-return valves fitted to the cold supply within the shower valves had become stuck and were preventing the cold water from entering the shower valve.

The solution was to remove the non-return valves completely. As the cold water was tank fed there was no risk of contamination to mains water so these valves were not needed. Of-course if the cold was been fed by mains we would have replaced the faulty non-return valves.

On reflection we suspect that the problem with the non-return valves were caused because the cold water was tank fed while the hot supply was fed off a shower pump. Because the pump ran on for a few seconds after the shower flow was shut off, the hot water putting trying to flow into the cold supply, allot of pressure onto the non-return valve on the cold supply every time the shower was turned off. Eventually it just jammed closed.

In eight years of working with showers we have seen this exact problem only 3 times. So not exactly a common cause for failure, but an interesting problem none the less.

Subscriptions

Recent Entries

Bloggers

Archive

Shower Repairs - faulty non-return valves.

Spread the Word