quick Hep20 pipe question

[grrrinch]

Hello there,
I'm having a bathroom refurb. My plumbers are fantastic and I totally trust them and like them. I noticed that they were using hep20 15mm piping for the hot and cold water feeds to the bath and basin. The inside of the pipe diameter is smaller than 15mm copper piping, something they hadn't noticed til I pointed it out. Does this mean my flow rate will be affected? The guys weren't too sure but thought not. I cant seem to find anything about on the Hepworth site.
Cheers

 

[gday2uk]

I doubt it. If it did would you notice? Because it wouldn't be much.

 

[grrrinch]

I doubt it. If it did would you notice? Because it wouldn't be much.

Then my question is answered! thanks-I didn't know if it would drop a significant noticeable amount.

 

[dextrous]

Pity they're using plastic.

 

[glasgowgas]

pity they are supplying the bath with 15mm!!!!

 

[dextrous]

pity they are supplying the bath with 15mm!!!!

Unless it's from a combi? Or am I mistaken?

Anyway, plastic in a bathroom is always a sign of lazy amateurs.

 

[glasgowgas]

pity they are supplying the bath with 15mm!!!!

Unless it's from a combi? Or am I mistaken?

Anyway, plastic in a bathroom is always a sign of lazy amateurs.

and a 3/4 x 15mm bath tap adaptor is a sign of a lazy.............

 

[dextrous]

and a 3/4 x 15mm bath tap adaptor is a sign of a lazy.............

Could you clarify what it should be? If (and we're all guessing if that's the case here) a combi provides hot water through 15mm, at what stage and indeed why would you increase pipe supply to the bath to 22mm?

 

[glasgowgas]

yeah you are dead right, i will fit 1/2" taps to the bath cos its 15mm pipe feeding it.

 

[dextrous]

yeah you are dead right, i will fit 1/2" taps to the bath cos its 15mm pipe feeding it.

Am a little confused here. Why would 3/4" taps not be appropriate with a 3/4"-15mm tap connector? Am I being stupid (it has been known )

 

[glasgowgas]

plastic in a bathroom is always a sign of lazy amateurs.

so would a 3/4 x 15mm bath adaptor

 

[dextrous]

plastic in a bathroom is always a sign of lazy amateurs.

so would a 3/4 x 15mm bath adaptor

Even more confused!! If a customer wanted bath taps, which connect through 3/4", and the supply pipe is in 15mm, then what other option is there? I'm not being funny here, but I can't see what you're getting at?

 

[glasgowgas]

If a customer wanted bath taps, which connect through 3/4"

all bath taps are 3/4"

 

[dextrous]

all bath taps are 3/4"

and since the supply from a combi is 15mm, then why -

and a 3/4 x 15mm bath tap adaptor is a sign of a lazy.............

?

What's the alternative? Or are you taking the p i s s?

 

[glasgowgas]

ok so the supply from a combi is 15mm.

i would as soon as practicable after the boiler,increase the pipe to 22mm to feed all hot water outlets in property.

if someone at some point has done a boiler change,removing a system or regular boiler, and a hot water cylinder, then the original hot pipework for the house would already be in 22mm(or older propertys 3/4")

i have altered "plumbers" work before where they have used 15mm plastic underneath floorboards( a lot easier than notching out for 22mm,or they just didnt bring any 22mm) to feed a bath. it took an eternity to fill using 15mm.

and i am not taking the p iss