pneumatic hand control valve, the size range is 1/8"-1/2". It has many functions, such as two-position five-way, two-position three-way and three-position five-way. It has two kinds of reset forms: manual reset and spring reset. L series hand-pulled valves are made of imported sealing rings and grease; valve stem is made of high-quality fine-drawn aluminium alloy bars and CNC longitudinal cutting; valve body is made of 6061-T6 aluminium alloy with better performance and clean, tidy and tough threads. PT, G, NPT and other threads are provided according to different needs.