Power Generation, Refining, Petrochemicals, Midstream Oil & Gas, Upstream Oil & Gas.
Key Applications : Steam Turbine Generator, Condenser, Cooling Tower, Reactor Building,
Turbine Building, Reactor Facility Grounds
& BOP, Steam Turbine, Gas Turbine, Heat Recovery Steam Generator, Balance Of Plant, Distillation,
Hydroprocessing Reforming,
Cracking, Secondary, Blending, Quenching & Fractioning, Charge Gas Compression, Seperation, Pipeline Integrity, Operations,
Dehydration, Refrigeration, Liquifaction, Loading/Shipping, Regasification, Auxillary,
Dehydration/Treating, Compression.
Standard construction
Bellows seal configuration is fully compatible with the standard 21000 Series trim and actuator options
providing equivalent capacity capabilities for each valve size. The standard packing box design and packing design options are used as a secondary stem seal.
Rugged design
The formed bellows construction is an externally pressurized design that is capable
of operating up to the full valve ANSI B16.34 pressure rating. Guides are located above and below the bellows providing excellent stability to withstand flow induced and mechanical vibration.
Extended life
The bellows assembly is designed for 50% compression/ extension (zero stress) at the valve mid-stroke position to help maximize cycle life. Bellows torsional stresses are also reduced with the anti-rotation feature provided by flats on the plug stem.
High quality
Each bellows sub assembly is helium leak tested to verify weld integrity, and is also hydro-statically tested as part of the complete valve assembly. Mechanical travel stops are
also designed into both the bellows and valve assemblies to prevent over compression or extension.
Smart solution
Bellows installed cycle life can be monitored in the field by utilizing Masoneilan’s SVI™ Digital Positioner with actual process data.This advanced preventative maintenance option will help improve plant safety by identifying potential hazardous failures before they happen, and cut cost by reducing premature bellows replacement.
Bellows materials standard material
316/316L stainless steel
Optional materials
• Hastelloy C276
• Monel 400 • Inconel 625
