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Actuators & Positioners Magnum Piston Actuators/DPS Electro-Pneumatic Positioner
Leslie's DPS positioner, derived from Leslie's patented PMC electro-pneumatic controller technology, provides ultra-fast, stable response using a pulse modulated output and a non-mechanical, optical/digital stem position feedback. The DPS positioner supplies a digitally controlled pneumatic output (up to 12 SCFM - 60psi supply) and uses a non-contact, direct connected optical reader. With no mechanical feedback linkages to loosen or wear, accuracy and repeatability do not degrade over time. When mounted on an Aeroflow high gain control valve with a 6" Magnum actuator, stroke speed can exceed 3" per second. You read it right, 3" per second - with no overshoot. Diaphragm Actuators
Electric Actuators
Positioners
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Magnum
Series piston actuators use low volume and long stroke to maximize bleed and
feed rates. Externally mounted spring return modules minimize residual volume
and maximize speed of response. This low volume translates into high speed of
response.
Leslie
spring and diaphragm actuators are rugged high thrust units with flanged yoke to
bonnet connections for simple maintenance and better access to stem packing.
These workhorses of our control valve lines have been proven and perfected for
nearly forty years of in-service usage. They are available in four sizes: 35,
55, 85, and 135 in.2
The
Rexa X-PAC and T-PAC electraulic linear actuators are designed for modulating
and two position service. These actuators feature a self-contained electraulic
power module utilizing the patented Rexa Flow Match System. This technology
allows precise cylinder positioning, independent of load variations, and locks
the cylinder in place when no movement is required. Because the system is
hydraulically stiff, instabilities and positioning errors are eliminated.
Standard output thrust ranges from 2,000-10,000 lbs. Strokes are available up to
6 inches. Optional features include spring failure, position transmitter and
handwheel. Digital, pulse, dry contact and 4-20 mA input options are available.
Direct coupled rotary models are available as the R series actuator.
For
thrust requirements up to 2000 lbs., Leslie offers Jordan Controls electric
actuators which include a wide variety of options. Standard features include 120
or 240 VAC operation, permanently lubricated motors, anti-condensation heater
and feedback transmitters. Position switches are standard on most units.
The
Moore 760 Series pneumatic and electro-pneumatic positioners provide cam
characterization, split ranging, direct or reverse action and single or double
output. Key features include non-interaction of zero and span adjustments and
the positive cam locking mechanism for easy calibration.
The
PMV models P5 (pneumatic) and EP5 (electro-pneumatic) positioners offer a wide
variety of options due to their modular construction. These high capacity,
vibration resistant units are easily mounted on both rotary or rectilinear
actuators, with a variety of cams to choose from. Available options included
limit switches, potentiometer or 4-20 mA transmitter, provided in a completely
sealed F5 module.