... are used for pipe beside the system,measuring the liquid through pipe,for instance,Water,Ethylene,Glycol,or any ... seal.It,usually running separately,blocks water(or other liquid)regularly in order to protect crucial point or expensive ... pipe1 pipe screw(+)Material Shell:Extended steelConnection pipe: BrassInside element:Brass and phosphorus brasswater valve:Phosphorus brassRated current\voltage10(8 ...