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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Chaoda Group USA Co., LTD
opened (to make sure the cavity vented), the closure can be opened by turning
the handle.
3.
Open the closure door and insert the Pig.
Note: It won’t let you turn the handle to open the closure if the safety needle valve is
not fully opened.
4.
Reinstall the closure -- align and adjust the closure with the entry bore, close it and
turn the handle to lock it. Then, fully close the secondary safety needle valve at the
front of the closure and the vent/drain fittings/valves on the body.
Note: Ensure the safety needle valve is fully closed before going to the next step.
5.
Open the pig valve by using the gear operator and the pig will be launched
downstream.
