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Recommended flexi hoses for ASHP

 
Air Source Heat Pumps (ASHPs)
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 Old_Scientist
(@old_scientist)
Honorable Member Member
Joined: 2 years ago
Posts: 487
Topic starter 28/07/2026 12:09 am   [#3117]

I wonder if someone could recommend some high quality flexi hoses for use with my Samsung ASHP outside unit.

I need 28mm with 1" BSP fittings, ideally 500mm length with a 90deg elbow at the 1" BSP fitting end.

I was looking at these Intatec hoses:

https://pirateheatingsupplies.com/product/intatec-500mm-pre-insulated-angled-hose-one-inch-female-swivel-x-28mm-twin-pack-hphose500b/

My outside primary pipework has sprung a leak on one of it's elbow joints (the pipework was poorly supported and movement seems to have caused the joint to fail, although I need to inspect it further). Anyway, as I'm going to have to drain down the system to fix the leak, I may as well take the opportunity to move the ASHP to a better location (now legislation no longer requires it to be 1m from the boundary) and reduce the length of the outside primaries in the process, hence the need for new flexi hoses.

Hoping @pirate-rich or others may be able to advise if the above are a good choice or if there are better products available. I may also take the opportunity to check and upgrade if necessary my external insulation on the primaries (28mm copper).

One further question - is it always best practice to attach the flexi hoses directly to the ASHP unit, or can I fit isolator ball valves directly to the ASHP unit and the flexi hoses on to the isolator valves? 

I was looking at using these Intatec isolation valves fitted directly onto the rear of the heat pump with the above flexi hoses onto these:

https://pirateheatingsupplies.com/product/intatec-one-inch-female-swivel-nut-x-one-inch-male-flat-face-k-type-ball-valve-hpbv11/

Are these high quality full bore types that will not restrict flow?

 


This topic was modified 41 minutes ago by Old_Scientist

Samsung 12kW gen6 ASHP with 50L volumiser and all new large radiators. 7.2kWp solar (south facing), Tesla PW3 (13.5kW)
Solar generation completely offsets ASHP usage annually. We no longer burn ~1600L of kerosene annually.


   
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