Ask The Trades - Surrey Flange V Warix Flange

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Ask The Trades › DIY Forum › Plumbing Questions › Surrey Flange V Warix Flange

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Surrey Flange V Warix Flange (Read 13668 times)

DJS

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Surrey Flange V Warix Flange
Aug 31^st, 2004, 3:56pm

Hi,
I have bought a new Aqualisa power shower (1.5 bar) and already have a Surrey Flange fitted to the hot water cylinder. Aqualisa does not recommend using the Surrey Flange as they say it restricts the flow. They recommend the Warix Flange instead.
How much affect on the flow rate would the Surrey Flange actually have? Should I replace the Surrey with a Warix or is it not really worth the bother? It would involve a change of the pipe layout.
They also say copper pipe is better than plastic because again plastic restricts the flow. By how much? Would it really make such a big difference to the "power" of the shower?
Any info appreciated.
DJS.

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PEDANTICVINDICTIVEMAN Trade Member Offline Cant talk,old folks to rip off and tanks to pee in Posts: 846 Total Thanks: 0 For This Post: 0 Gender: Trade: Not Specified	Re: Surrey Flange V Warix Flange Reply #1 - Aug 31^st, 2004, 8:08pm Cant see how plastic restricts the flow as you normally use less elbows and I reckon the bore is smoother, seems a strange comment !
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Mud

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Re: Surrey Flange V Warix Flange
Reply #2 - Sep 1^st, 2004, 8:21pm

Don't know to be absolutely honest, one is a 'male' flange and the other is 'female (fitting) - can't really see how either should restrict the flow that much. �

The only thing that causes problems is the formation of air bubbles which can be drawn into the pump or the shower and create airl locks - as long as the pipe off the top of the cylinder continually rises upto the expansion tank you can take a tapping off that rising pipe - removing the necessity for the flange.

« Last Edit: Sep 1^st, 2004, 8:22pm by Mud »

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DJS Junior Member Offline I love YaBB 1G - SP1! Posts: 5 Total Thanks: 0 For This Post: 0	Re: Surrey Flange V Warix Flange Reply #3 - Sep 2^nd, 2004, 8:50am Thanks for the info guys. I will probably try the Surrey Flange (as its already fitted). If it does cause a problem I will just have to fit an alternative. Cheers.
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MAB GDPR opt-out Total Thanks: 0 For This Post: 0	Re: Surrey Flange V Warix Flange Reply #4 - Sep 25^th, 2004, 2:25pm The only way I can see the Surrey causing a problem is if a LOT of water is demanded but there are two sizes, I nearly always fit the one with the larger inlet pipe.
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thescruff

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Re: Surrey Flange V Warix Flange
Reply #5 - Sep 25^th, 2004, 4:31pm

[quote author=Mud link=1093964165/0#2 date=1094066513]

The only thing that causes problems is the formation of air bubbles which can be drawn into the pump or the shower and create airl locks - as long as the pipe off the top of the cylinder continually rises upto the expansion tank you can take a tapping off that rising pipe - removing the necessity for the flange. [/quote]

Not if you want a trouble free install you can't.

scruff

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JerryD

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Re: Surrey Flange V Warix Flange
Reply #6 - Oct 8^th, 2004, 11:15pm

Shouldn't take shower supply from the riser, it should have it's own dedicated hot supply.

We always fit an Essex Flange which means cutting a hole in the side of the hot cylinder but being on the side of the cylinder (near the top), it means no air can get in the hot pipe to the shower pump.

Also it's not affected by other hot taps being used elsewhere (which would happen if taken off the expansion pipe)

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thescruff Global Moderator Trade Member Author Offline Who said plumbing was easy. Posts: 6037 Total Thanks: 147 For This Post: 0 Gender: Trade: Plumber	Re: Surrey Flange V Warix Flange Reply #7 - Oct 8^th, 2004, 11:19pm Essex are also recommended by all the pump makers as a first choice other than a secondary tapping, purpose made cylinder. scruff
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JerryD

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Re: Surrey Flange V Warix Flange
Reply #8 - Oct 17^th, 2004, 12:08pm

[quote author=DJS link=1093964165/0#0 date=1093964165]
They also say copper pipe is better than plastic because again plastic restricts the flow. By how much? Would it really make such a big difference to the "power" of the shower?
Any info appreciated.
DJS.
[/quote]I've discovered the reason for this, the plastic pipe has the same outer diameter as the copper (that's how the fittings are interchangeable) but the plastic pipe has a slightly thicker wall. Therefore the internal diameter of the plastic pipe is slightly less than the internal diameter of the copper pipe!!

Hope this answers the question

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