10633 W Airport Blvd. STE 200
Chaoda Group USA Co., LTD
Tel: +1 (832) 939-9944
Stafford, TX 77477
Fax: +1 (832) 939-9942
Pa
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10
Chaoda Group USA Co., LTD
The Below video shows how to Open and Close the Closure/Entry Cap of Chaoda Pig Valve,
check it out first.
3.1 Launching
1.
Fully close the pig valve by using the gear operator to achieve shut-off in both
directions. Slowly open the vent/drain fittings/valves located on the Body of the
valve.
2.
Open the secondary safety needle vent/bleed valve located at the front of the
closure door. This will vent any excess pressure, releasing the mechanical stop, and
unlocking the closure door(entry cap).
For 4’’ pigging valve. Turn the handle to fully open the safety needle bleeder on
the closure. Then remove the locking bolt and closure. Only after these safety
devices have been removed (to make sure the cavity vented), the closure can be
opened by turning the handle.
For 6’’ and above pigging valve. Turn the handwheel to fully open the safety
needle bleeder on the closure. Only after these safety devices fully
