The resurrection of Doc, bringing a 20 year old neismann Bischoff Flair back to life after 12 years off road. (53 Viewers)

[Scotch mist]

The valve on the heat exchanger is a Ballofix type , it is an o-ring on the shaft , it’s a common problem when used on heating / hot water systems , moving it is not advisable, it may re seat but more likely to aggravate an already perished o-ring
As a plumber I’ve seen hundreds like this

Even if re seated with movement it needs replaced as it is a leak that won’t go away

 

[Northernraider]

The valve on the heat exchanger is a Ballofix type , it is an o-ring on the shaft , it’s a common problem when used on heating / hot water systems , moving it is not advisable, it may re seat but more likely to aggravate an already perished o-ring
As a plumber I’ve seen hundreds like this

Even if re seated with movement it needs replaced as it is a leak that won’t go away

Yes I think replacement is the plan . Hopefully I can get it off and fit a new one without damaging anything else.

 

[L' Hobo]

Yes I think replacement is the plan . Hopefully I can get it off and fit a new one without damaging anything else.

I have found that this type of valves, unless moved fairly often, tends to seize in one position and, when one tries to release it, it either leaks or breaks!

 

[Northernraider]

I have found that this type of valves, unless moved fairly often, tends to seize in one position and, when one tries to release it, it either leaks or breaks!

Yes I think that's what's caused it. It was in the on position when I collected the van and we were getting cooked driving it so I turned it off. Now it has a slight leak.

I'd rather fix it now than in the colder weather when I really want the heat exchanger working