product
Coking Switch Valves
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Technical Data
Sizes
8-18"
Pressure Classes
ANSI 900
ANSI 600
Materials of Construction
A217 Gr. C12, F9, 347SS
Improve up-time. Decrease production losses.
ValvTechnologies’ four way switch valve design focuses on operational reliability, extended mean time before major repair and low cost of total ownership.
The delayed coker process is a batch process, one of the most hostile environments in the refinery – due to the abrasive / erosive, properties of the coke by-product and high temperature reactions. Valves are cycled frequently and failure can lead to a complete shutdown of a unit, resulting in large process and financial costs. Optimizing valve life-cycle is critical to operational efficiency.
- 15 years potential life in service. Benefit: increased reliability
- Excellent thermal compensation. Benefit: increased reliability
- Prevents coke migration into seat faces. Benefit: increased reliability
- No purge steam needed for seat loading. Benefit: Lower emissions, enhanced process safety
- Eliminates pendulum motion of the ball. Benefit: inherent fire safety
- Ball and seat are HVOF RiTech® spray coated. . Benefit: erosion resistant
- Extreme wear resistance for cycling and consistent torques. Benefit: Increased cost-savings on repair
- Strong bonding in thermal cycling applications. Benefit: longer service life
- Low steam requirements. Benefit: reduced maintenance costs
- Less fabrication required. Benefit: longer service life
- Graphite seals in spring pockets protects loading mechanisms in case of steam failure. Benefit: reliability in case of temporary steam loss
Extended flange connections available
Remote start – stop button control panels
- Switch valve isolation
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Coking Switch Valves
