Does anyone have a convenient, online, supplier for bspp - bspt nipples in 1”? Stainless/gunmetal/brass are all fine. My Google-foo has failed me so far.

 

I need to transition from bspt female on my heat pump to bspp flat-face seal (tap connector) for my flexi’s.

 

I could use hydraulic unions (the bspp will have an internal cone seal) and bore the middles through in the lathe but that seems a bit drastic.

Edited October 23, 20223 yr by HughF

Are there hoses the right size?

 

You usually use union nuts withmale bspt thread one side and a flat face female bspp the other for meters etc.

 

e.g. R1" male bspt to go into 1" female taper in heat pump; and then the other side of that union coupling is a G1 1/4" female flat face to suit the hose which is fatter than the equivalent copper for the same internal diameter.

 

 

The hoses are the right size, yep. It’s just that they’re giant tap connectors basically, so they’re a flat face washer seal at one end and (good luck getting that to seal onto a bspt nipple) and they’re 28mm compression the other end.

 

Ideally I’d get some bspt male flexi’s with compression on the other end, screw them directly into the side of the heatpump, but I’ve been supplied these and might as well try and use them.

 

Although, I do have some 1”/28mm SR unions in gunmetal, I could easily run some street elbows into those then put the flexi’s in a between a couple of sections of copper (if I had flexi’s with compression each end)…. But then I’ve got to do the outside plumbing in copper, and I prefer to work with mlcp.
 

do I even need flexi’s? Decisions decisions

Edited October 25, 20223 yr by HughF

yes, you need the flexis.

Just now, dpmiller said:

yes, you need the flexis.

Even if I’m connecting onto a buried length of insulated twin pipework that’s 15m from the house? Compressor vibration I guess ….