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
