... elimination of leaks. (2),Large displacement:Proportional to displacement and the system pressure. (3),Easy ... maintenance:unscrew the valve directly to clean,does not affect the normal operation of ... (2),If you need to install in 3/4 '' diameter of pipe, simply adding 1/2 '' to 3/4 '' complement ... core . (3),If not exhaust,tighten the next body,to remove ...