Can you break a gas valve with LDF?

[Aire]

Fairy liquid? Isn't that now banned for use as a source of leak detection due to it been corrosive?

 

[Chuck]

Fairy liquid? Isn't that now banned for use as a source of leak detection due to it been corrosive?

Quite possibly, who do you think banned it? Neat Fairy liquid is AFAIK, both slightly caustic (cuts through the grease) and contains salt (as a thickening agent) but one only needs a couple of drops per litre so it's very dilute when mixed up. Anyway, that was decades ago, when we did/used many things that aren't allowed now.

What the OP was actually wondering was what is in LDF and all the ones I'm aware of are basically water, a surfactant to reduce the surface tension so bubbles form easily, and a thickening agent (like gycerol) to increase the viscosity, which stabilises the bubbles and makes them live longer.

 

[dan_the_plumber]

It turned out this gas valve’s adjuster had broken. Little bit strange as I managed to get desired max/min pressures on service. Then 5 days later the gas valve went up the wall!
Anyway, I fitted new gas valve and now boiker running fine.

 

[JusKel]

I've come across that when servicing boilers that haven't been adjusted in a while. Usually happens while there. Readings pull in good then drift off again.
There was a leaflet with one valve which suggested they only have a 10 year lifespan anyway.

 

[dan_the_plumber]

I've come across that when servicing boilers that haven't been adjusted in a while. Usually happens while there. Readings pull in good then drift off again.
There was a leaflet with one valve which suggested they only have a 10 year lifespan anyway.

Nice one for this. I thought I’d done something wrong. As I said I did manage to get the proper burner pressures, but then the valve broke a few days later...Ce Strange, no?

 

[Gold Gas]

It's that horrible problem that happens every now and then.
You've serviced the boiler and now it doesn't work.
Can't be helped! - i personally get a blob (technical term) of ldf on my finger and blob it in the test point.

I explain that these checks are vital and now the boiler is working correctly at the proper pressures etc, and it can't handle it and was always going to fail. The main point is, its burning correctly and they are safe.

 

[dan_the_plumber]

It's that horrible problem that happens every now and then.
You've serviced the boiler and now it doesn't work.
Can't be helped! - i personally get a blob (technical term) of ldf on my finger and blob it in the test point.

I explain that these checks are vital and now the boiler is working correctly at the proper pressures etc, and it can't handle it and was always going to fail. The main point is, its burning correctly and they are safe.

Yeah good point, you need to be able to carry out maintenance on a system and/or a boiler otherwise it wasn’t up to scratch anyway

 

[Gazzzz101]

You can definitely break a Worcester 30i erp has valve with ldf - trust me I’ve done it