Brochure
12 | Nonstop High-Cycle Applications
Improve Uptime with Rotary Control Valve Assemblies
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Reliable Actuator Performance - The 2052 spring-and-diaphragm
actuator was designed for long service life under load conditions.
It has no O-rings to wear, an inherent position on air failure, low
actuator pressures for operation, and double-sided diaphragms.
Designed for 1,000,000 cycles under load conditions, you can
forget about leakage, failure, and poor control.
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Fast Stroking Speed - When your high-cycle applications require
adjustable cycle times, Fisher control valve assemblies deliver with
fast actuator stroking speeds and tight process control.
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Precise valve positioning - Linkage-less, non-contact FIELDVUE
digital valve controllers are paired with Fisher control valves to
achieve precise positioning accuracy and fast response to process
changes. With no linkage to wear, loosen, corrode, or vibrate,
FIELDVUE digital valve controllers can handle harsh environments
and nonstop cycling. FIELDVUE digital valve controllers offer
integral 4-20 mA position feedback for explosion-proof or
non-explosion-proof applications.
Drive Train Support
The spring in the outboard shaft supports
the drive train and disk, allowing the shaft
to be installed in any orientation. It also
minimizes seal wear rate, therefore improving
the uptime of the control valve.
Long Seal Life
The seal ring has pressure-assisted sealing action,
ensuring tight shutoff regardless of pressure drop.
The opening and closing path of the eccentric disk
minimizes disk contact with the seal ring, thereby
reducing seal wear, undue friction, and seating
torque requirements.
Low Emission (Low-E) Packing Meets
Environmental Requirements
Certified Fisher ENVIRO-SEAL packing system
controls emissions, ensuring environmental
compliance and excellent sealing over the
extended service life of the control valve.
Low Friction
PTFE-lined PEEK bearings are
low friction, low wear bearings
that allow the control valve to
operate under high pressure
drops for a high cycle life while
maintaining low torque.