Thrush valve

photokynetics

After tolerating my fairly new regulator that's on the input line of my boiler system I looked for a regulater made by thrush, since I read that they were very reliable they're also hard to find, but I found one that's adjustable

from 2 lb to 40 lb it's preset at 28, I paid $50 for it on eBay it's brand new it's certainly looks brand new but hopefully it will function better and more reliably. Since it's probably fairly old I'm tempted to tear it apart and make sure all the rubber is in good condition but perhaps I should just leave it alone for now and give it a try?

Jamie Hall

What was the matter with what you have? Watts would be my go to…

photokynetics

The Watts regulator I have keeps falling up, it will not keep the pressure up. I thought about taking it apart from cleaning it up but I've read in other places that this thrush regulator is better

hot_rod

They all pretty much a spring and diaphragm inside, fairly low tech😉

The brass versions tend to scale and fail less often

Typically they work for a few hours or days and never again until you drain off pressure

Lyle {pheloa} Carter

The problem is that's not a pressure reducing valve. According to the paperwork on your bench , it is a pressure relief valve, If you turn it over there should be a tapping on the bottom.

This does contain a diaphragm and sort of looks like a pressure reducing valve. But on this valve when the diaphragm flexes upwards it opens the drain at the bottom and allows water to drain out until the preset pressure is reached.