Bath Filler water pressure
Discussion
I have a bath filler and im really not sure it's going to be decent enough pressure for filling a bath. It feels like it will take 15 minutes to run the bath.
Its a scudo with valve. Lots of other oems using this design as well if it helps.
https://www.britishbathroomcompany....CAiD42nNu452...
The pressure is slow and very poor on the cold feed with cold on 22mm dropped to a 15mm run with pegler isolator and then into a 3/4 15mm tap connector.
My gut here is the valve then has these on the connector with 8mm bore.
Am i on a hiding to nothing with this valve?
Its a scudo with valve. Lots of other oems using this design as well if it helps.
https://www.britishbathroomcompany....CAiD42nNu452...
The pressure is slow and very poor on the cold feed with cold on 22mm dropped to a 15mm run with pegler isolator and then into a 3/4 15mm tap connector.
My gut here is the valve then has these on the connector with 8mm bore.
Am i on a hiding to nothing with this valve?
I have a bath filler and im really not sure it's going to be decent enough pressure for filling a bath. It feels like it will take 15 minutes to run the bath.
Its a scudo with valve. Lots of other oems using this design as well if it helps.
https://bathcenter.co.uk/bath-filler-tap-overflow-...
The pressure is slow and very poor on the cold feed with cold on 22mm dropped to a 15mm run with pegler isolator and then into a 3/4 15mm tap connector.
My gut here is the valve then has these on the connector with 8mm bore.
Am i on a hiding to nothing with this valve?
Its a scudo with valve. Lots of other oems using this design as well if it helps.
https://bathcenter.co.uk/bath-filler-tap-overflow-...
The pressure is slow and very poor on the cold feed with cold on 22mm dropped to a 15mm run with pegler isolator and then into a 3/4 15mm tap connector.
My gut here is the valve then has these on the connector with 8mm bore.
Am i on a hiding to nothing with this valve?
Edited by fourstardan on Friday 17th April 20:28
Probably but you wont really know until you have tried it really, if you already have it then its not such a big issue to try it out really providing you don`t have to cut any holes.
Isolation valves can restrict the flow too, pegler are normally pretty good just check its a full bore one.
Isolation valves can restrict the flow too, pegler are normally pretty good just check its a full bore one.
Belle427 said:
Probably but you wont really know until you have tried it really, if you already have it then its not such a big issue to try it out really providing you don`t have to cut any holes.
Isolation valves can restrict the flow too, pegler are normally pretty good just check its a full bore one.
I've had a look at videos of bath fillers on YouTube (Thrilling evening I know) and most seem a bit better but with this 8mm bottleneck I can see why this one is so paltry. Isolation valves can restrict the flow too, pegler are normally pretty good just check its a full bore one.
The peglers are full bore.
There is nothing on the market with a valve in for fillers, Lusso have one that looks thinner but it's 370 quid....flow wise it is mostly the same.
If you want a decent flow rate you need the water pressure to sustain it. With reasonable pressure that fitting could probably achieve 10-15 litres a minute.
What is the water pressure like? Is it just tank fed or roughly mains pressure with an unvented cylinder? You might need to add a pump, for example.
What is the water pressure like? Is it just tank fed or roughly mains pressure with an unvented cylinder? You might need to add a pump, for example.
You could replace the isolating valve with a full bore ball valve and that would negate your concerns over further pressure drop. A single restriction generally has not a huge effect on pressure drop - Its more the cumulative effect. One technique for flow measurement is to measure the pressure drop across an intentional restriction, and translate that into flow. Despite having the intentional restriction, the pressure generally recovers back to almost what it was.
If you have lots of restrictions, or as with a small bore pipe, a very long restriction, then the pressure is always going to suffer.
Traditionally, with gravity fed systems, bath taps were always done in 22mm / 3/4". With the advent of high pressure hot water systems, some dropped this down to 15mm / 1/2". When I plumbed this bath here, I used 22 all the way to the bath filler, as the bath is oversized. With that, its full bore 22mm high pressure all the way, bar a solenoid operated valve that turns the water on and off from a push button on the bath.
If you have lots of restrictions, or as with a small bore pipe, a very long restriction, then the pressure is always going to suffer.
Traditionally, with gravity fed systems, bath taps were always done in 22mm / 3/4". With the advent of high pressure hot water systems, some dropped this down to 15mm / 1/2". When I plumbed this bath here, I used 22 all the way to the bath filler, as the bath is oversized. With that, its full bore 22mm high pressure all the way, bar a solenoid operated valve that turns the water on and off from a push button on the bath.
Magic919 said:
If you want a decent flow rate you need the water pressure to sustain it. With reasonable pressure that fitting could probably achieve 10-15 litres a minute.
What is the water pressure like? Is it just tank fed or roughly mains pressure with an unvented cylinder? You might need to add a pump, for example.
Its unvented system, I get 2 bar on the shower im installing.What is the water pressure like? Is it just tank fed or roughly mains pressure with an unvented cylinder? You might need to add a pump, for example.
Will do a pressure test tomorrow to review this on this section of feed as it's lower than the shower.
GasEngineer said:
The spec you've linked to says that the flow rate is adjustable.
Does that just mean it's how far you open the "tap" to run the bath, or is there some other adjustment possible?
(I thought I'd posted this yesterday but it disappeared !).
I think what this means is how open the valve is on the lever. Im fully open. Does that just mean it's how far you open the "tap" to run the bath, or is there some other adjustment possible?
(I thought I'd posted this yesterday but it disappeared !).
So pressure testing read 2.5 bar on the isolator. Pegler valves cold/hot, they are about 12/15 quid each but they are pretty good isolators if you are interested.
Ran the cold again to test how long it would take, took about 5 minutes to fill half way, not sure if I'm being picky or this is likely to be it.
Baths all in and I've just added CT1 so I doubt I'll be changing the bath tap now anyway so thanks for the input.
Ran the cold again to test how long it would take, took about 5 minutes to fill half way, not sure if I'm being picky or this is likely to be it.
Baths all in and I've just added CT1 so I doubt I'll be changing the bath tap now anyway so thanks for the input.
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