How do you "bung"

[farlo1957]

Hi.....need to stop the hot water to change the bathroom taps, how do I bung the system...and is this the best way to prevent a possible airlock? To describe the system in brief....there is the tank in the loft that has a pipe that goes from that into the hot water cylinder below, that particular pipe has a stopcock type handle, am I correct in assuming I need to turn this to the closed position? Thanks

 

[kevplumb]

giz $50 and i will explain

you stop the water going out of the tank and you stop air getting in the vent

nothing in nothing out status quo

so then within reason you can do

"whatever you want"

yeah i know just couldn't resist

 

[sooey]

Hope he hasn't got a primatic.

 

[kevplumb]

only read the header

shouldnt make any odds

=====================================================

OP turn the valve off and see what happens

 

[Dick Puller]

Yes Kev, that sounds a great way of imploiding the cylinder

 

[bathstyle]

by far the safest way for a DIYer to work on a system is to drain the Cold water tank. Just remember to call a Plumber when you fill up and get an air lock

 

[farlo1957]

by far the safest way for a DIYer to work on a system is to drain the Cold water tank. Just remember to call a Plumber when you fill up and get an air lock

Hi, thanks for the reply......is there any way of doing this method and not getting an airlock? ie a specific precedure so you don't end up with an airlock when you fill up.

thanks

 

[kevplumb]

carry on an airlock is easy sorted

 

[D_Hailsham]

need to stop the hot water to change the bathroom taps ...there is the tank in the loft that has a pipe that goes from that into the hot water cylinder below, that particular pipe has a stopcock type handle, am I correct in assuming I need to turn this to the closed position?

Yes. If cold water can't get into the cylinder, hot water can't get out.

Even though you are only changing one tap it's best to open all the hot taps , it ensures the water drains out of the one you are working on. When you have finished changing the taps, turn the stopcock on. There will be a noise as the air is expelled from all the taps, which can be turned off when the water is running freely.

 

[farlo1957]

need to stop the hot water to change the bathroom taps ...there is the tank in the loft that has a pipe that goes from that into the hot water cylinder below, that particular pipe has a stopcock type handle, am I correct in assuming I need to turn this to the closed position?

Yes. If cold water can't get into the cylinder, hot water can't get out.

Even though you are only changing one tap it's best to open all the hot taps , it ensures the water drains out of the one you are working on. When you have finished changing the taps, turn the stopcock on. There will be a noise as the air is expelled from all the taps, which can be turned off when the water is running freely.

Hi, thanks that's great....just one question.....do i leave the hot water taps open or do i close them once the water stops running out of them..thanks again

 

[seco services]

leave it open don't matter.
if your changing the bath taps leave the lower kitchen one open then if the bung don't seal 100% the waters got somewhere to go rather than up the pipe your working on.