From the interchangeability of the trim

Some adjusting mechanism trim can be easily replaced and maintenance, for example, the sleeve valve can be easily replaced sleeve to achieve different flow characteristics; oriented valve top and bottom pieces can easily flip the valve core and valve seat to achieve a positive body valve with anti-valve replacement, in order to achieve the replacement of the open air gas off; valve body separator valve can be easily removed for seat
Change and cleaning.pneumatic auto drain
From the valve cover on the structure, can be used depending on the application requirements, the ordinary valve cover, long-necked valve can also be used to cover or with heat or endothermic piece of long-necked valve cover, in addition to bellows seal bonnet. The long-necked valve cover for high-temperature and low-temperature applications, to protect the stem packing, from medium temperature, to prevent the adhesive, bite card, leakage or reduce the lubrication effect. In addition to the bonnet extension, so the packing at the temperature outside away from the medium temperature, long-necked bonnet, also increase the cooling or heat-absorbing sheet, made with cooling or endothermic piece of long-necked valve cover, the medium temperature to obtain a decrease or increase. Typically, the casting of long-necked valve cover has a good heat resistance and high temperature adaptability, is used for high temperature applications; stainless steel assembly of the long-necked valve cover has a lower thermal conductivity and good low temperature adaptation , for cryogenic applications. Does not allow the accused the media leaks, it is not commonly used filler structure on the valve cover, must be used with bellows seal on the valve cover. This architecture uses a bellows seal, can charged with the medium to be sealed in the valve body, is not in contact with the filler, to prevent fluid leakage. To be considered in the selection of the withstand voltage and temperature of the bellows.flange solenoid valve