Originally Posted by AI Inc
Only ones Ive ever seen are tiny pvb's with no test cocks. Those were on in one hood about 30 yrs old with systems installed by the builders guy.
Wilkins made a 1/2-inch version of their tiny beverage-feed RPZ, with all the testcocks. Watts makes a 1/2-inch version of the 009 RPZ that uses the same relief-valve parts as the 3/4-inch model, and it has a flow capacity that's good enough for a lot of systems fed from 5/8 meters.