P
PumpIt
Possible stupid newbie question coming up!
Q1. I've always wondered... WHY do Central Heating Pumps have such huge couplings on them?
I doubt many homes use pipes bigger than 22mm - but the couplings on all the pumps I've ever seen have about 40mm threads.
My guess is so you can change the pump by just shutting off valves either side and take it out without having to drain the system down - but how often is that needed! Just seems silly to me.
Q2. Do any pumps have 22mm (or even 15mm) couplings on them?
Cheers!
Mark.
Q1. I've always wondered... WHY do Central Heating Pumps have such huge couplings on them?
I doubt many homes use pipes bigger than 22mm - but the couplings on all the pumps I've ever seen have about 40mm threads.
My guess is so you can change the pump by just shutting off valves either side and take it out without having to drain the system down - but how often is that needed! Just seems silly to me.
Q2. Do any pumps have 22mm (or even 15mm) couplings on them?
Cheers!
Mark.