GE 35002 Brochure
GE Oil & Gas
Masoneilan* Valves
35002 Camflex*II
Rotary Globe Control Valve
The Camflex II eccentric plug control valve effectively
combines enhanced control performance, simplicity
and long-term reliability for a broad range of
applications.
• Design Simplicity
• Long-term Reliability
Camflex II Eccentric Plug
Rotary Control Valve
Setting the Standard
Unlike some valves in the industry, GE’s 35002 Series
Camflex II Eccentric Plug Rotary Control Valve is not an
automated valve pieced together in a valve automation
shop. Its thoughtful design elevates overall product integrity
and reduces the risk of component failure and process
upset. Offering process plant owners and operators an
exceptional control valve choice, GE helps drive results on
your key business metrics:
• Process uptime
• Asset utilization
• Control performance
Simply Reliable
Uncomplicated, yet attentive to all the right details, the
Camflex II Eccentric Plug Rotary Control Valve offers
a universal integrated system of valve, actuator and
positioner. The valve’s key design objectives -- reducing
friction, reducing drive-train slop, and mitigating component
wear -- are accomplished through a standard and simplified
design architecture that helps this control valve reliably
perform the basic functions of shutoff, throttling and
emission control over an extended lifetime.
Employing an Uncomplicated Geometry
The essentially linear flow characteristic of the Camflex II
Eccentric Plug Rotary Control Valve is established by the
spherical geometry of the eccentric rotating plug. While
the major portion of the flow curve is linear, there is a slight
modification as the plug approaches the seat. As the plug
cams into the seat, the rate of change in flow is gradually
reduced until the plug makes full contact with the seat. This
simple architecture provides the following benefits:
• C
Ratio of 100:1 provides stable operation over a wide
v
range of conditions
• Improved control at startup (low flow/high control
pressure drop)
hardened trim, and high-performance low-emission packing
are all standard, providing exceptional long-term reliability.
In fact, Camflex valves regularly outperform other control
valves in a variety of severely erosive applications where
abrasive solids tend to tear apart other types of valves.
Custom Solutions
Optional constructions, such as the patented DVD™
(Differential Velocity Device) noise reduction trim, alloy
constructions and a cryogenic extension bonnet allow
these valves to be tailored to fit your specific application
needs. All of this combines to offer a low life cycle cost, from
purchase and installation through startup, operation and
maintenance.
• Standard platform
• Wide-ranging applications
• Globe-valve performance
• Customized configurations
Field Proven
More than 1 million Camflex valves have been successfully
installed and operated in a variety of process industries
and applications. The latest Camflex design maintains the
valve’s legendary dependability based on a field-proven
concept that remains a standard of excellence for eccentric
plug rotary control valves.
Broadly Capable
The Camflex II Eccentric Plug Rotary Control Valve is built on
a standard platform with enormous versatility and breadth
of application. Camflex created the eccentric plug, a true
rotary globe control valve that packages the best features
of a globe-style valve within rotary valve architecture. In
addition, high-end features such as the extension bonnet,
2 | GE Oil & Gas
Tackling Key Challenges
Reliable Long-Term Shutoff
With its eccentric rotating valve plug, the Camflex II
Eccentric Plug Rotary Control Valve reduces two common
valve shortcomings: excessive seal ring friction inherent
in ball valves and high actuator forces required for tight
shutoff of either conventional globe valves or butterfly
valves.
Because of its unique seating action, the Camflex plug
makes no contact with the seat until it rotates into its
full closed position. Once seating occurs, continued shaft
rotation causes the plug arm to flex, forcing the plug into
deeper contact with the seat ensuring consistent tight
shutoff. This reliable seating method reduces wear from
rubbing contact, and the tight shutoff performance greatly
reduces the possibility of clearance flow-induced wear or
erosion. Camflex seating mechanics and resulting longterm reliable shutoff offer the following benefits:
• Reduced rubbing – greatly reduced friction and wear
• Improved uptime – extended maintenance cycles
• Reduced unplanned outages and production loss
Environmental Emissions
Compliance
Why pay extra to comply with current environmental
emissions requirements? Unlike some control valves that
require expensive specialized packing systems to satisfy
low emission requirements, Camflex II Eccentric Plug
Rotary Control Valves come standard with GE’s Masoneilan
EF* seal (Emissions Free seal) technology.
• Standard at no extra cost
• Satisfies global low emissions standards requirements
• Simple and reliable with long life
Packing Follower
O-Ring
By combining eccentric plug action with a long actuation
lever, this valve achieves a 3:1 force multiplication. This
means that only one-third of the force required to stroke a
conventional single-seated globe valve is required for the
Camflex actuator to stroke against a given pressure drop.
• Smaller actuator size
• Faster response speed
• Improved control performance
The Camflex plug makes no contact with the seat until it rotates into its full closed position.
Conventional Valve Design
1:1 Ratio of Forces Requires Large Actuator
O-Ring
The Camflex Principle
3:1 Multiplication of Forces
Masoneilan 35002 Series Camflex® II - Universal Control Valve | 3
Camflex II Eccentric Plug Rotary Control Valve
ANSI Class 600 construction with many
trim configurations to handle
temperatures ranging from
-200° C (-320° F) to +400° C (+750° F) and
standard ANSI Class IV leakage
Total enclosure provides complete protection
Eccentric rotating, self-aligning plug
for a reliable tight shut-off
Rugged construction with a splined
plug shaft and a triple bearing system
minimizes backlash and provides
exceptional support and guiding
Protected handwheel shaft
4 | GE Oil & Gas
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