Visbreaking

Providing severe service isolation valves for the heavy coking visbreaking process

During the visbreaking process, heavy coking of major equipment occurs frequently, thus requiring isolation valves to shutoff soundly and reliably for decoking operations.

MOGAS C-Series valves, with their expertly engineered trim configuration, provides 100 percent reliability during the most severe operations and significantly reduces downtime when compared to conventional gate designs. For applications where heavy coking occurs, MOGAS also offers valves equipped with a continuous, intermittent purge system that removes troublesome coke buildup from seats and body cavities.

Operating Conditions:

High Temperatures: 500– 900° F
High Cycles
Temperature Cycling

HP Steam Blowdown
Coking Service

Erosive Conditions
High Pressure Water Service

Visbreaking Process Flow Diagram

Feed Isolation
Visbreaker Furnace Isolation
Automated Soaker Drum Isolation
Manual Soaker Drum Isolation
Frac Tower Bottoms Emergency Block
Frac Bottoms Pump Isolation
Heavy Vacuum Gas Oil Stripper Emergency Block
Frac Tower Bottom Heat Exchanger Isolation