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Fluid Power . . . PNEUMATIC COMPONENTS Top Product
Low cost, high precision servovalve. The Model 27N R-DDV Pneumatic Servovalve is designed for high-precision, closed-loop feedback motion control systems, such as control of load, pressure and flow. A rotary direct-drive design controls flow in a single stage, independent of supply pressure, using a limited-angle DC torque motor. A Hall-effect sensor supplies feedback to the integrated controller. Used with a low-friction cylinder, typical linear speeds would be in the range of 0 to 100 in/second, and load weights in the range of 0 to 100 lbs. Depending on controller capability and system parameters, linear position resolution can be as fine as ±0.002 in. The servovalve offers 80 Hz frequency response, with 10 flow rates from 0.025 to 1.25 Cv. HR Textron Industrial Products, Santa Clarita, CA. Free Info - Circle 430
Miniature valves and controls. This line of miniature check valves and fixed flow controls is manufactured with 10-32 threaded connections, 1/8- and 1/4-in. NPT threads, and press-in inserts. The check valves are offered in brass or stainless steel, and are suited for use with liquids or gases. The flow controls are a parallel arrangement of a ball check valve and a precision orifice. They are also offered in brass or stainless steel. O'Keefe Controls Co, Monroe, CT. http://www.okcc.com Free Info - Circle 438
Free Info - Circle 436
Free Info - Circle 432
Free Info - Circle 431
Free Info - Circle 434
Free Info - Circle 433
Free Info - Circle 437 Push-in cartridge fittings. The Series AQ698-DOTS fittings are 90° elbows based on the company's straight cartridge fittings. They provide a quick and easy means to connect air brake tubing to such components as valves, pumps, tanks and manifolds. The series is offered in sizes to fit 5/32-, 1/4-, 3/8-, 1/2- and 5/8- in. OD tubing. A special insert preserves tubing roundness, and the fittings can be pressed into a round hole in a component. Alkon Corp, Pine Brook, NJ. Free Info - Circle 435 [dfx/incl/99dfx.htm] |
In-line gas filter. The Model F195 disposable filter removes 99.99% of
unwanted particles, as tiny as 0.1 micron, from gas flow lines. Ideal for portable flue
gas analyzers, as well as other analysis systems, this filter will withstand maximum
temperatures of 230°F @ 0 psig and 120°F @ 125 psig. Maximum differential pressures are
60 psi (in-to-out flow direction) and 20 psi (out-to-in flow direction). Connections are
barbed for 1/4 in. tubing. Dwyer Instruments Inc, Michigan City, IN. 
Barometric pressure standard. The Quartzonix 960 offers high
accuracy at low cost, and is ideal for remote meteorological installations, data buoys,
airports and ships. Designed to measure pressures from 11 to 16 psia, the unit uses a
vibrating quartz beam technology and low-power miniature digital electronics. The beam's
frequency of vibration changes in response to pressure-induced stress applied to the beam
from a metal bellows. Pressure Systems Inc, Hampton, VA. 
Desiccant and refrigerant dryer alternative. The DuraDry
Membrane Air Dryer will dry compressed air to dewpoints as low as -40°F, at flow rates
from <1 SCFH to 40 SCFM. As the unit has no moving parts, it operates quietly, reliably
and efficiently without operator attention. Applications include instrument air, ozone
generators, freeze-up prevention, pneumatic autosamplers and medical equipment. Whatman
Inc, Tewksbury, MA.
Miniature pneumatic mufflers. These mufflers reduce noise
levels by as much as 20 dB or more, depending on insert material, air flow rate and
mechanical noise. They are designed for equipment that uses up to 60 cfm of air. The
housings are made with Nylon 6,6 and 33 percent fiberglass, which increases temperature
tolerance, strength and dimensional stability. Inserts are available with either composite
or acoustic absorbent fiber material. 3M Bonding Systems Division, St. Paul,
MN. 
Pneumatic fittings. These components provide a simple way to
regulate air flow and control the position of a cylinder piston rod, without the
complexity of electro-pneumatic interface circuitry. Blocking, Slow Start and Flow Control
fittings are offered with a range of connector configurations, including Prestolok II tube
ends and NPT thread ends. Inline and Right Angle Flow Controls also are available. Parker
Hannifin Corp, Cleveland, OH.
Pneumatic grippers. A line of fast cycling lightweight and
corrosion-resistant pneumatic grippers were introduced last year. The two-fingered,
angular-type grippers feature a Delrin housing and fingers with aluminum piston axles.
Three sizes are available with gripping forces from 10 to 35 ft-lbs. The grippers are
sensor-ready, and an inductive sensor is available. Mannesmann Rexroth Corp, Lexington,
KY. 