Negative end plugging
Threaded ball valve
Internal thread positive end
External thread positive end
Internal thread negative end
External thread negative end
Strainer valve
Flange breather valve TQ-1
Internal thread breather valve TQ-2
Round flange negative end (square flange negative end)
Double-negative joint (Type B)
Negative-positive end (stainless steel, aluminum alloy)
Double-positive joint (C type)
Negative end reducer union
Flame-arresting cap
Flame arrester
Gauging hole
Elbow spray gun
High pressure spray gun
Coarse strainer
