how to reduce water pressure in kitchen tap

[hak06]

hi guys ,
water pressure in my kitchen tap is very high, HOT Water &cold water , when i open tap, water splashed back on the floor. i can reduce the water pressure by turning the knob slightly but then boiler does not comes on.it seems i need to open the knob more than half way for the boiler to comes on for me to get hot water. i got a glow worm swiftflow 75/80 boiler right next to the kitchen sink.
when asked a plumber he tried to reduce the pressure by closeing the main cold water supply valve slightly but then boiler does not comes on. he left without a definate answer.

any idea ?
would fitting a isolating valve under the hot water tap do the trick?

 

[lightning]

Fit isolating valves and close them to your happy with water pressure

I prefer to use theses not the cheapest

http://www.screwfix.com/prods/21860/Plumbing/Pegler-Brassware/Pegler-T-Ball-Valve-15mm-Blue

 

[mrgas]

The only way to reduce pressure is with a pressure reducing valve.
With any other type of valve you are just restricing flow.
Flow and pressure are different things but not unrelated.
By maintaining system pressure and reducing the flow by restriction you are likely to get increased noise from the pipework.

 

[hak06]

thanks guys :huray:
found this , is this th one?
http://www.toolstation.com/shop/p54389

at £25 quite expensive.
where do you fit this ? under the sink?

might try lightning suggestion.

Read more: //www.diynot.com/forums/posting.php#ixzz1HeLfMFoS

 

[silverback18]

To stop the splash back effect you need to reduce the flow rate DO NOT do this by partial closing of ball-o-fix valves, this causes noise, what you should fit are Cottam & Preedy CP961 valves, these cost about £10.00 each, they are a combined ball-0-fix valve and regulator, they only allow the correct flow rate to pass and so prevent the splash back effect without the noise that closing normal ball-o-fix valve cause, I would use the CP961R08XL_C15 valve, this is 15mm compression, for a sink you want between 4 - 8 litres a minute, the valve I have suggested is 8 l/min the good thing about these valves is if you find the flow unsatisfactory, you simply change the cartridge, not the valve, a 5 minute job.
Here is a link http://www.cottamandpreedy.co.uk/productdetail.php?prPgId=148

 

[hak06]

To stop the splash back effect you need to reduce the flow rate DO NOT do this by partial closing of ball-o-fix valves, this causes noise, what you should fit are Cottam & Preedy CP961 valves, these cost about £10.00 each, they are a combined ball-0-fix valve and regulator, they only allow the correct flow rate to pass and so prevent the splash back effect without the noise that closing normal ball-o-fix valve cause, I would use the CP961R08XL_C15 valve, this is 15mm compression, for a sink you want between 4 - 8 litres a minute, the valve I have suggested is 8 l/min the good thing about these valves is if you find the flow unsatisfactory, you simply change the cartridge, not the valve, a 5 minute job.
Here is a link http://www.cottamandpreedy.co.uk/productdetail.php?prPgId=148

where do i fit this valve , just below the hot water tap or other place?

 

[JohnD]

you might also be able to get a Tap Flow Reducing Aerator kit, complete with a plastic spanner, free from your water company.

The order will be handled by http://www.savewatersavemoney.com/ on behalf of the water co.s it is called a Twin Tap Insert Kit SWSM3069 or Wash Basin Tap Inserts. For a kitchen Mixer you want the Miracle Tap Spray



worth a try

 

[silverback18]

To stop the splash back effect you need to reduce the flow rate DO NOT do this by partial closing of ball-o-fix valves, this causes noise, what you should fit are Cottam & Preedy CP961 valves, these cost about £10.00 each, they are a combined ball-0-fix valve and regulator, they only allow the correct flow rate to pass and so prevent the splash back effect without the noise that closing normal ball-o-fix valve cause, I would use the CP961R08XL_C15 valve, this is 15mm compression, for a sink you want between 4 - 8 litres a minute, the valve I have suggested is 8 l/min the good thing about these valves is if you find the flow unsatisfactory, you simply change the cartridge, not the valve, a 5 minute job.
Here is a link http://www.cottamandpreedy.co.uk/productdetail.php?prPgId=148

where do i fit this valve , just below the hot water tap or other place?

Yes, you fit these valves on the hot and cold to the tap, they double up a service valves as well