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General:
The type 77/78-36100 Pneumatic Shut-off ball valve is composed of ball
valves and pneumatic single or double action actuator. Valve size ranging
from DN15 to DN200 are float ball valve, while DN250 and DN300 are fixed
ball valve. Double seats use a unique flexible lip to seal against the
ball and provide long lasting shut-off in either direction. The actuator
is the product of Bellofram in USA and it also use the rack-pinion and
double pistons construction. So the actuator have the features of small
volume, light weight, large output, and so on. With the low-friction-factor
guiding ring of nonmettle material, just avoid piston to body direct contact,
which bring the actuator swift action and long using life. Type 77/78-36100
pneumatic shut-off ball valve as a whole have the features of simple construction,
small volume, light weight, reliable sealing, long lasting, easy operation,
etc. Therefore it can be widely apply to automatic control system and
remote control system of petroleum-chemical industry, light industry,
and some other industries.
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