腾讯彩票2串1什么意思

Declutch Override Gear Box

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20 series aluminum manual gear box applies to 90°rotary type butterfly valve, ball valve and plug valve etc. With electrostatic coating on the surface, the aluminum alloy housing is pleasing in appearance and highly corrosion-resistant and wear-proof.


Click to enlarge GD series declutch override gear box is designed to adapt to butterfly, ball valve and pneumatic actuator. The design conforms to 5211 standard, so it can achieve valve open/close control under circumstance of power and air supply failure. It can be directly connected with valve and pneumatic actuator and is easily for mounting.

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腾讯彩票2串1什么意思