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Hi
Our flow and return from to/from the boiler in the garage to the airing cupboard where the pump is, is 28mm pipework.
I want to fit a bypass valve so that in winter, when the frost stat in the garage triggers the pump, the water can still circulate even if CH and HW are not calling.
The question is could a fit a 22mm bypass valve for this purpose or must it be a 28mm which is quite a lot more expensive ?
Thanks in advance!
Our flow and return from to/from the boiler in the garage to the airing cupboard where the pump is, is 28mm pipework.
I want to fit a bypass valve so that in winter, when the frost stat in the garage triggers the pump, the water can still circulate even if CH and HW are not calling.
The question is could a fit a 22mm bypass valve for this purpose or must it be a 28mm which is quite a lot more expensive ?
Thanks in advance!