Sisco Specialty Products, Inc

The safe operation of the closure is ensured by a redundant design in which the closure cannot be opened without the removal of the pressure alert valve and the movement of the safety lock. The pressure alert valve also provides the operator an indication of the presence of any residual pressure in the vessel should the operator inadvertently attempt to open the closure prior to all pressure on the vessel being relieved. Additionally, the safety lock mechanism prevents the door handle from being moved to the open position until after the pressure alert valve has been safely removed. The safety lock must also be returned to the locked position in order for the pressure alert valve to be installed.

Operation of the closure can be accomplished by one person without the use of tools. The integration of the locking segments, locking mechanism and door handle into the door provides a compact and efficient design. To open the door, the handle requires only a quarter turn, which moves the locking segments from their stowed position. The internal components of the locking mechanism are protected by a weather seal and are stainless or plated to protect them from rust and corrosion. The o-ring groove is machined into the door with the hub o-ring seat area recessed to protect the seat during pig launching and receiving. This configuration assures a positive seal when the door is closed and locked.

Sizes: 2" and larger An inflatable spherical pig, can be sized to match the pipe internal diameter. For liquid displacement applications in wet gas systems.

The Automated Control System utilizes a PLC with an HMI in an optional Class 1, Division 1, explosion proof housing mounted in an easily accessible area on the launcher skid. Regulated and filtered pipeline gas is used to operate the pneumatic controlled launch pins. Optional pins choices are available. The Control System Screen Displays: Time Log-In Request Launch Pins Position Launch Time Last 25 Events Date Number of Spherical Pigs Pig Passage Indicator Next Scheduled Launch Errors (should one occur)

Sizes: 4" and larger Multi-seal Pigs - for cleaning, displacement, and batching applications. May be equipped with the aggressive multi scraper cup to remove paraffin, asphaltines, and other soft deposits.

Sizes: 4" - 24" Tuff Cast Pigs - for cleaning, displacement, and batching applications. An all-urethane single piece pig that comes in 3-cup or 2-cup 2-disc configurations. Non-rebuildable and simply discarded when worn out.