Potterton HE28 diverter leak

[JohnArnoldBrown]

I have a small, intermittent leak from the actuator pin of the 3 way diverter valve on a Potterton Gold combi 28HE. Everything works perfectly, but the leak is sufficient to require re-pressurizing about once a week. Does anyone know if there is a replaceable O-ring or similar, or do I have to fork out for a complete valve fo the sake of a 50p seal?

 

[Agile]

A photo of the leaking part would help!

Tony

 

[JohnArnoldBrown]

Here's a picture of the leak.

Untitled

• JohnArnoldBrown
• 3 Nov 2014
• 1

As you can see, it's coming from above the joint where the top section screws into the manifold.

The part number, I'm fairly certain, is 5114718
https://www.heatingspares247.com/diverter-way-valve/baxi-way-valve-assy-5114718-p-5424.html

So I'm thinking maybe my best bet is to buy:
http://www.ebay.co.uk/itm/221463304568?ssPageName=STRK:MESINDXX:IT&_trksid=p3984.m1436.l2648

I'm sure there's a dodgy O-ring or a piece of grit in there, but I might struggle to find the right sized O-ring.

 

[Agile]

The actual seal is inside the top part where the clip fits and cannot be changed on its own.

The complete valve is so relatively cheap that I would recommend that you buy that.

But looking at your picture, the clip seems likely to be badly rusted and you will probably need a new one of them too.

It may be just a little leak to you but you are very lucky that the water has not spoilt the motor unit ( yet ).

Tony

 

[JohnArnoldBrown]

Thanks for the advice.

 

[JohnArnoldBrown]

"It may be just a little leak to you but you are very lucky that the water has not spoilt the motor unit ( yet ). "

You and your big mouth
Water had indeed got into the motor, and shorted out one of the limit switches. I took it apart, dried it out and gently cleaned the contacts, but the O-ring on the plunger is broken and brittle, so although it's working fine again for the moment I've ordered a replacement.