Pressure regulators: How well will one designed for use with air, work with water?

I'm having a hell of a time trying to find a stainless steel pressure regulator for use with liquids (water specifically) with upper pressure range of only 150 psi that doesn't cost hundreds of dollars.

I have come across the Watts P60 regulator that has a plastic body with SS internals, so I may have to settle for that.

So now I've been wondering how well a pressure regulator designed for use with gases would work with a liquid (water) at the low flow rates you would typically find in an HPA system?

Thanks in advance for any recommendations or advice.

What are you using it for? If it is mains water pressure for an irrigation system, generally you would use a pressure reducer to bring it down (30psi i think) then a ball valve to adjust rate of flow.

I can't think of any scenarios where you'd want/need to regulate pressure rather than set and forget

lazaah said:

What are you using it for? If it is mains water pressure for an irrigation system, generally you would use a pressure reducer to bring it down (30psi i think) then a ball valve to adjust rate of flow.

I can't think of any scenarios where you'd want/need to regulate pressure rather than set and forget

Click to expand...

I would be using it to regulate the nutrient solution pressure coming out of a pressure accumulator prior to the solenoids and nozzles. So it would be relatively low volume centered around 100 psi + or - 20 psi.

And it's only $3400. ouch

Thats the only one I found that is stainless steel. Probably want to consider a cheaper one with plastic parts, hell you could probably buy a dozen spares and still be saving $.

You may want to consider a steam pressure regulator, should work fine. The Watts 152SS series would be a place to start.