... , input pipe, spoke, stand, rocker arm, hose and ejector, using water as extinguishant. It is usually installed inside an indoor hydrant ... and 30m, subject to the inner diameter of φ19mm. The water inlet is connected to a Rc1 copper gate valve and ... RC1/2" ball valve as ejector.We can produce by PVC,PVE,RUBBER just as customers' request .The size of the ...