Mapabloc High Performance Butterfly Valve

Mapabloc high performance butterfly valve with double block and bleed sealing system, is developed for ethylene plants to optimize the process of the transfer and decoking gas lines. The valve is designed to prevent all operation problems of traditional gate valve designs, such as coke accumulation and jamming due to high temperature differentials. The valves are in service world-wide in various ethylene plants.
Features
Steam purging in seat area for continuous protection and cleaning, bearing protection as an option
Two piece shaft design for maximized capacity
Patented position indicator for highest process safety
Double block and bleed (DBB) sealing system for hydrocarbon and oxygen segregation
Compact and solid design
100% fluid segregation
Block function with steam
High corrosion and abrasion resistance
Cobalt based alloy sealing surfaces and disc edge protection
Fire safe design
Gate valve face to face length