The company has developed a new type of tunneling machine inside and outside the spray system, which is three spiral nozzle solid cone nozzle type, good spray atomization effect , large amount of water , outside the spray jet is equipped with seat , spray direction can be adjusted as needed , covering a wide range , after a trial in the underground , to reach a good result , three spray system specific structure shown in Figure 1 , the tunneling machine fork rack mounting bracket spray , spray on the shelves of three Bottoms spray seat, between the seat has a pipeline connected to the spray , spray seat has three different angles Ordering information of B1/8GA-W wide angle spray nozzle(YBS brand) Thread：B=BSPT Materials： None=brass I=mild steel (bar stock）or cast iron（cast） SS=303 stainless steel（bar stock）or 316 stainless steel（cast） 316SS=stainless steel（bar stock） 1/8 B1/8GA-W-4.3W B1/8GA-W-I4.3W B1/8GA-W-SS4.3W B1/8GA-W-316SS4.3W B1/8GA-W-8W B1/8GA-W-I8W B1/8GA-W-SS8W B1/8GA-W-316SS8W