A water valve cracked today at my house and had to call a plumber. He replaced it with a gas valve (yellow handle). He said he uses gas valves because they are better quality.
What he installed looks like this:
I did a search based on what's written on it and it's tested up to 30 bars and seems it can be used for water also… but I'm still not 100% sure.
Where I live, the water pressure is 3-6 atm in the pipes, depending on how tall the buildings are.
Can this be used for water? Are there any disadvantages for using it for water?
Best Answer
It is common/normal for valves to be rated for multiple service types.
As such, so long as it is rated/certified/locally acceptable for the type of service it is in, and rated at or above the operating service pressure of the service it's in, it's fine.
Locally, I'd be looking for a "NSF-PW" (National Sanitation Foundation - Potable Water) or one of a number of other more obscure codes indicating suitability for potable water service.
If it can also handle gas, I don't care, in water service. In gas service, I care that it can handle gas, and is suitably rated for that service, and I don't care what the water ratings (if any) are. The only place I might care about both would be my spare parts collection, where one valve could fix either type of service, if suitably rated for both.
If it makes you happier, paint the handle blue, or red, or whatever color you expect it to be.