This type of products is mainly developed for shale gas well, tight sandstone gas well and coal gas well, whose control pressure not exceed 6000psi, with automatic RTU remote control (local control is also allowed).

Due to the conditions of such wells, including low yield, large number of wellheads and cluster layout of wells, RTU remote centralized control is adopted to make it easy for centralized management of wellhead, which will reduce gathering and transportation process, and save the manpower, money and material investments.

Usually their control object is only surface safety valve (maybe one SSV, or one SSV plus one WSV). They have features, including remote shutdown, local shutdown, and automatic emergency shutdown of fusible plug during fire, and automatic shutdown when flow line pressure is too high or too low, etc.