Fittings for Circulation pump 1-1/2 inch

c-note

Need a bit of help with this,
I have a circulation pump arriving next week with 1-1/2 inch bsp male threads for inlet and outlet, fairly standard stuff so far, except...

the feed to the pump will be coming from 1/2 inch braided hose, and the outlet has to go to same, This isnt being used in a traditional heating system but instead to circulate the water in a home made hot tub.

so what i need is fittings to go onto the male 1-1/2 inch connection and leave me with a 1/2 inch hose barb.
All i can find so far on the web are gate valves that leave you with a 22mm or 28mm compression fitting,
So whats the best way to get from a 1-1/2 inch male threat and end up with a 1/2 inch hose barb??

Thanks for any help

sullzz

Barb ? As in garden hose with jubilee clip fitting?

sullzz

Also what water will be circulating through this? Is it central heating water going through a heat exchanger, i its fresh water a standard circulating pump wont last too long.
If its a standard sized circulating pump you could connect each side with GB union and bush down to a hose nipple (barb) connection.

Tom44

Should have ordered a brass bodied pump

Standard pump will rust out after a while of fresh water and stop working.
But who cares, god bless Amazon
Cheaper to have asked here first.


Everything can be bushed down from the normal gate pump valve.
Visit to you're local plumbing supplies will figure it out for you without a problem.

Calling there first day would have kept business local and probably cheaper

corkgsxr

Yep fresh water needs brass body.

But get 1" female gate valves. 1" to 1/2" bushing and 1/2" male to Barb into that. Very simple

c-note

THanks for the replies guys,
I had no idea a brass bodied pump was needed for fresh/tap water! :O
IS there something different about water in a central heating system?


In Fairness the pump will just be circulating water from the hot tub to a gas boiler and back to the hot tub, It'll only be used a couple of times a year for a few hours so its more important to be cheap than reliable! it'll be drained after each use as well so there wont be water sitting in it all year.

Tom44 wrote: »

Should have ordered a brass bodied pump

Standard pump will rust out after a while of fresh water and stop working.
But who cares, god bless Amazon
Cheaper to have asked here first.


Everything can be bushed down from the normal gate pump valve.
Visit to you're local plumbing supplies will figure it out for you without a problem.

Calling there first day would have kept business local and probably cheaper

True for any proper job but this is just a hobby/hack/diy hot tub that'll end up costing ~300-400 vs 1000's and you cant argue with €30 from ebay!:)

see the attached pic of the hot tub! (I'm replacing the stove (made from old air compressor tank) with a gas boiler and circulation pump!

Tom44

" see the attached pic of the hot tub! (I'm replacing the stove (made from old air compressor tank) with a gas boiler and circulation pump! "

GAS!!!!