This valve is welded in fine steel, having the features of handy to operate, good seal, reliable performance and having the function of automatic air-locking dropping material.
采用优质钢材焊接而成，运行灵活、密闭性好、性能可靠，具有自动锁风落料的功效。
2
Seat rings are long to compensate for temperature fluctuations and are seal - welded. seating faces are hardfaced with stellite 6, ground and lapped to mirror finish.