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#1
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Pump for pumping air into combi boiler exansion vessel?
The expansion vessel in my combi has stopped doing its job properly after a leaking radiator valve reduced the system pressure to almost nothing the other day. Last time I found the expansion vessel wasn't doing its job, I managed to pump 10psi of air into it, and it then worked perfectly for a few months until this latest event. This procedure would be easy if I had a suitable (cheap) pump. Any suggestions? A car foot pump is out of the question because the vessel's valve is about 5 ft above floor level. Last time I did it, I had an electric tyre pump which I connected to a long wire which I then plugged into my car's fag lighter. But it was very tricky because each time I pulled the pump's attachment off the valve, the air would escape - and it doesn;t take much air to create 10psi in the vesel.. And now I don't have a car with a fag lighter! I do have a procket pressure guage which can read as low as 10 psi. It's just the pump which is the problem. Thanks for any suggestions. A battery-operated pump perhaps? Anyone know of a cheap one? Someone told me a bicycle pump would work. Is that correct? Many thanks Rich |
#2
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Rich wrote:
Thanks for any suggestions. A battery-operated pump perhaps? Anyone know of a cheap one? Someone told me a bicycle pump would work. Is that correct? Bicycle pump. -- Grunff |
#3
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In an earlier contribution to this discussion,
Rich wrote: The expansion vessel in my combi has stopped doing its job properly after a leaking radiator valve reduced the system pressure to almost nothing the other day. Last time I found the expansion vessel wasn't doing its job, I managed to pump 10psi of air into it, and it then worked perfectly for a few months until this latest event. This procedure would be easy if I had a suitable (cheap) pump. Any suggestions? A car foot pump is out of the question because the vessel's valve is about 5 ft above floor level. Last time I did it, I had an electric tyre pump which I connected to a long wire which I then plugged into my car's fag lighter. But it was very tricky because each time I pulled the pump's attachment off the valve, the air would escape - and it doesn;t take much air to create 10psi in the vesel.. And now I don't have a car with a fag lighter! I do have a procket pressure guage which can read as low as 10 psi. It's just the pump which is the problem. Thanks for any suggestions. A battery-operated pump perhaps? Anyone know of a cheap one? Someone told me a bicycle pump would work. Is that correct? Many thanks Rich I would use a car footpump, parked on the platform at the top of a step ladder, and operated by hand. You don't need a lot of force for 10 psi - and hand-power is quite adequate. -- Cheers, Set Square ______ Please reply to newsgroup. Reply address is invalid. |
#4
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Last time I found the expansion vessel wasn't doing its job, I managed
to pump 10psi of air into it, and it then worked perfectly for a few months until this latest event. I would replace the vessel. It should not require regular precharging. Christian. |
#5
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"Rich" wrote in message ... The expansion vessel in my combi has stopped doing its job properly after a leaking radiator valve reduced the system pressure to almost nothing the other day. Last time I found the expansion vessel wasn't doing its job, I managed to pump 10psi of air into it, and it then worked perfectly for a few months until this latest event. This procedure would be easy if I had a suitable (cheap) pump. Any suggestions? A car foot pump is out of the question because the vessel's valve is about 5 ft above floor level. Last time I did it, I had an electric tyre pump which I connected to a long wire which I then plugged into my car's fag lighter. But it was very tricky because each time I pulled the pump's attachment off the valve, the air would escape - and it doesn;t take much air to create 10psi in the vesel.. And now I don't have a car with a fag lighter! I do have a procket pressure guage which can read as low as 10 psi. It's just the pump which is the problem. Thanks for any suggestions. A battery-operated pump perhaps? Anyone know of a cheap one? Someone told me a bicycle pump would work. Is that correct? I carry in my van a bicycle pump with suitable connector for just this sort of operation. Don't forget to depressurise the radiator system before pumping up the vessel to its design pressure |
#6
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"Christian McArdle" wrote in message . net... Last time I found the expansion vessel wasn't doing its job, I managed to pump 10psi of air into it, and it then worked perfectly for a few months until this latest event. I would replace the vessel. It should not require regular precharging. Well not regularly but you do come across the customer who says I had such and such wrong and I thought I'd check for airlocks. I let a lot of air out of here but it still won't go g Christian. |
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