Preassure reducing vavle needed?

[CarlH]

Was working in a old womans house today (installing loft insulation - need to do something till I get a plumbing job) when she got on about her cold water tap on her sink being very noisy and the washer always going on it. When I told her I was a trainee plumber she asked if I would fix it for her.
She said her son thinks the problem was an air lock in the cw distribution pipe but the water came out with one hell of a force - you could hear that! I felt it was down to the water preassure being to high.... as she lives in a rural area only about 1/2 from the water plant(she said she was the first house fed from it)
So my first thought was to install a preassure reducing valve on the cw pipe feeding the sink - would this be correct or would it be something else?

* also the pipes were not copper from the service valve but those bendy type ones ( a bit like a temp filling loop - not sure of their names or if it is thwe same thing as a temp filling loop??)

Secondly she asked me to move her internal stopcock for her out side supply. She has a toilet in the garage that she turns the supply off to in the winter but at the moment she has to mover her washing washine to gain access. I said I could move it ideally into the cuboard under the sink. what would be the best way of doing this?
* isolate
* drain down
* move the SC?????

Any help and advice would be welcomed.

 

[migoplumber]

your theory is correct, if you feel you have the ability to do the job, then proceed, just be very carefull, and remember you will have no insurance to cover the cost if anything goes wrong ie. flooding!

as for installing a prv, you need to check 1st what the pressure is, you might want to consider installing a 50p isolating valve semi closed as opposed to a 50 quid prv for the elderly lady!

never start a job, that you are not sure you can complete, that said best of luck to you.

 

[helpsy]

You can also get what I've just read is called a possivalve(triple function-stop tap, pressure reducing and filtration all in one) works upto 6.5 bar.It's available from B.E.S Ltd, Plumbing and Gas supplies I don't know what they're like, maybe somebody else knows.

 

[CarlH]

Thank guys. The reasonI opted for the PRV is becuase I thought that a partially opened isolating valve would only decrease the flow and not the pressure?

If a partially opened IV would work as well then would it be better to change the stopcock for a service valve? Even tho she seemed like she had plenty of money I'd still prefer to offer her the cheapest valve or at least ogive her the options? as in this is cheaper but this is more effective?

As for the possivalve I'lllook into that as I've no idea what it is... As Helpsy said if anyone knows of it's qualities?

Thanks again Migoplumber and Helpsy.

 

[buffy27]

the only issue with the old darling is the cold supply to the above mentioned sink..then u should try the penny valve first....i bet it will sort it out..

 

[Phil]

I would kill 2 birds with 1 stone, move the stoptap and replace with the possi valve and bring the whole house down to 3 bar. The service valve turned down wound screech like mad in that house.