I bought these 4 years ago and spent the extra money to buy brass and be able to flush the system. Nobody wants a leak in a house, especially if it has an old black chipboard floor. I bought these and they have worked well for several years. When I got home tonight my wife heard a water leak and opened the door to find the body of these valves had cracked. When I went to check it the shroud just below the valve stem broke and seemed to split for a while, the ground underneath is soft (don't know how much damage it did until I got under a house or until it fell apart and again build up) It's nice to be able to still flush the system, but if the brass cracks at 55psi it's poor quality (I have a pressure regulator and I checked the pressure as well). Moral of the story, I would highly trust Box PVC Shop about this company on a daily basis. This will save you more upfront and over $1,000 in repair bills if their equipment fails.
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