| 摘要 |
A diaphragm valve feature a valve body having a passage that opens to allow fluid to pass, and closes to prevent fluid from passing, through the valve body; and a bonnet assembly having a pressure ring to load/unload a diaphragm depending on a first spring constant to seal a peripheral portion thereof, and a compressor to close/open the passage of the valve body. A rotational connection fixes together the valve body and bonnet assembly with a second spring constant that is higher than and independent from the first spring constant, and includes the valve body having a rim with two shouldered pins on opposite sides. The bonnet assembly has a corresponding rim with two keyways on opposite sides thereof. Each keyway is recessed to receive and engage a respective shouldered pin when the bonnet assembly is rotated relative to the valve body. |
