hello all, I have what I believe is a air purge valve which is about 4-5 inches tall and cylindrical in shape with a small knob on top which is brass in color screwed onto the top of a air scoop near my boiler. it looks like there is a lot of rusted run off from that knob and I would like to replace it. do I need to turn off the boiler or drain it before doing this? thanks
replacing the air purge cylinder
- Thread starter sisyphus
- Start date
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slownsteady
Well-Known Member
Make sure you let the unit cool down for a while before changing the valve. Just in case you have some residual pressure.
slownsteady
Well-Known Member
I've seen a boiler maint. guy do a "hot-swap". He didn't want to bother draining down the system. But don't try it if the water is hot, you will get wet.
