Best pressure reducing valve to reduce 10 bar to circa 2 bar

[Talay]

Can someone please point me in the direction of a decent pressure reducing valve to reduce a hugely increased water pressure (10 bar) down to a more manageable 2 bar or something.

Also, is there anything I should consider other than just cutting the pipe and installing one with compression fittings ?

I'm comfortable with that but not any welding.

 

[Dan Robinson]

Honeywell or Jet are our usual methods. Both come with compression fittings.

 

[Gasguru]

Be carefull..the majority of pressure reducing valves do NOT reduce the pressure under static conditions. Most merchants don't know the difference either.

You need a PRV that limits pressure downstream under flow and no flow conditions. Be aware that many modern water fittings (inc. boilers) are not rated more than 6 Bar.

Altecnic Prescal 535

AFAIR the JET range are also suitable.

Good idea to plumb in a pressure gauge either side of the PRV.

 

[Agile]

Its common to use two PRVs in series to perform such a large reduction otherwise they can be noisy and give variable outputs.

Reducing to about 1/3 of the inlet is a good maximum rule of thumb.

As stated, most PRVs will not always reduce the static pressure and a pressure release valve at about 3 Bar may be a good idea to prevent damage to a combi boiler or flexible hoses.

Tony

 

[Talay]

Many thanks to all those who replied. I've found a retailer for the Altecnic Prescal 535 http://www.advancedwater.co.uk/prod-014-467-0706.html and will order two for the job.

Thanks

 

[Agile]

That seems quite a good spec and a good price too.

You could try to see first if just one valve is satisfactory.

I do recommend a PRV at the output though.

Tony

 

[ChrisR]

I do recommend a PRV at the output though.

we know you meant a pressure gauge

 

[Charnwood]

Why would you need 2 PRVs?
Most will take 20 to 25 bar inlet pressure and are adjustable to between 6 and 1 bar or even .5 bar outlet pressure.