Best way of reducing rad. Valve to 10mm

[Matt0029]

Which is the best way of reducing a rad. Valve down from 15mm to 10mm. A soldered reducer or an internal reducer?

 

[Timmy D]

Either as long as they’re watertight.

If you’ve got the available 10mm pipe available, internal looks better.

 

[Matt0029]

Do the 3 piece ones usually seal up ok?

 

[Matt0029]

A colleague I know had problems with the 2 piece reducers these don't have olives. Unlike the 3 piece one I was looking at using

 

[Timmy D]

I don’t use many but as long as the pipe is in decent shape and you don’t over tighten it, you shouldn’t have an issue.

 

[Matt0029]

Thanks and that is how they go?

 

[Matt0029]

Smear of jointing compound on the olive.

 

[Matt0029]

The olive seals there on these?

 

[king of pipes]

Either will do it think you're ok as you are a smear of sealant won't go a miss. Kop

 

[Matt0029]

I pressure tested one at home. With have 8-10 bar here and isn't leaking

 

[Scott_D]

I prefer the soldered reducer option where possible

 

[Matt0029]

I prefer the soldered reducer option where possible

A long tailed 15/10 reducer straight in to the rad. Valve?

 

[ShaunCorbs]

Long tail soldered reducer better in my opinion

Or a pushfit 15-10 elbow adapter

 

[EvilDrPorkChop]

Use the two part internal reducers a lot, don't have many issues. As long as the pipe is good. Plenty of paste, I usually crack them then take them apart and paste again.

 

[Matt0029]

Long tail soldered reducer better in my opinion

Or a pushfit 15-10 elbow adapter

Thanks as long as the one in my picture. Looks Abit over kill as the olive just need to be back past the shoulder. But that's all my merchants have.

 

[ShaunCorbs]

Thanks as long as the one in my picture. Looks Abit over kill as the olive just need to be back past the shoulder. But that's all my merchants have.

You can cut them down to match the depth of the fitting

 

[Matt0029]

You can cut them down to match the depth of the fitting

Would that have to be a hacksaw?

 

[ShaunCorbs]

Slice or manual cutter eg tighten the wheel etc

 

[Enthalpy]

Why not buy 10 mm radiator valves? My plumber fitted 10 mm TRVs (Inta I-Therm 10/8mm White Angled TRV 108TRVA) and I later fitted 10 mm lock shields when I replaced the radiators.

 

[Matt0029]

Sort of like that. With the reducer

 

[ShaunCorbs]

Yes but taken 15mm ish off the top

 

[Matt0029]

I struggled cutting with a cutter as have nothing to hold back on

 

[ShaunCorbs]

A point nose pliers on the bit your cutting off etc

 

[Matt0029]

These wouldn't reduce the flow if used

 

[Ben-gee]

Don’t worry about the flow, the big restriction is in the valve.
Any of the above methods are fine, it’s just about the aesthetics- which to be honest will be overlooked within a few days !!