Hi
I am about to replace the pump in my central heating and have the following question(s)
The feed to the pump from the boiler is 28mm, and after the pump it is 28mm, and then 'T' s off to two 22mm pipes, one going upstairs, the other downstairs.
When I ordered the replacement pump ( a Pegler TC6, 120,000Btu/Hr ) which is a matche or better than the old pump, I also ordered two isolating valves as the current gate valves are shot. Unfortunately these valves are 22mm, nor 28mm.
What I need to know is can I use the 22mm valves, and adjust the pipe size accordingly or do I need to stick with 28mm ?
The reason I ask is when I look at the entry/exit bore size of the pump its 22mm, so surely fitting 28mm will not have any advantage ?.
Thanks for any help.
[/img]
I am about to replace the pump in my central heating and have the following question(s)
The feed to the pump from the boiler is 28mm, and after the pump it is 28mm, and then 'T' s off to two 22mm pipes, one going upstairs, the other downstairs.
When I ordered the replacement pump ( a Pegler TC6, 120,000Btu/Hr ) which is a matche or better than the old pump, I also ordered two isolating valves as the current gate valves are shot. Unfortunately these valves are 22mm, nor 28mm.
What I need to know is can I use the 22mm valves, and adjust the pipe size accordingly or do I need to stick with 28mm ?
The reason I ask is when I look at the entry/exit bore size of the pump its 22mm, so surely fitting 28mm will not have any advantage ?.
Thanks for any help.
[/img]