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PWM Flow Control

PWM Flow Control
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Expe r t s i n S p ra y Tec h nolo g y 1.800.95.SPRAY | Intl. 1.630.665.5000 | www.spray.com Benefits • Flexibility: Achieve a wide range of flow rates with a single nozzle • Immediate flow adjustments: Using AutoJet® spray controllers, response time of electrically-actuated PulsaJet® spray nozzles is almost instantaneous • Reduced clogging: Maintain low flows even with large spray orifices for improved reliability and reduced maintenance • Reduced misting: Low flow operation using larger orifices at low pressures reduces the misting common at higher pressures and improves transfer efficiency and safety • Uniform coating/improved quality: Constant pressure operation prevents variations in spray angle and drop size for more even coating over a wide range of flow rates PWM Flow Control Pulse Width Modulation (PWM) Enables Flow Rate Control Without Changing Spray Pressure Examples of PWM Flow Control Applications • Applying a uniform coating of silicone across a web of paper machine clothing • Moisturizing cardboard to prevent warping • Spraying coatings on textiles and nonwoven products • Metal strip lube • Punch press lubrication • Spraying oil to improve mold release • Coating drum screen with release agent during OSB manufacturing • Humidifying particle board • Adding perfume to powdered soap • Spraying protective coatings on glass and glass bottles

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What You Need for PWM Flow Control Experts in Spray Techn olog y Spray Nozzles Spray Control Spray Analysis Spray Fabrication Bulletin No. 619 Printed in the U.S.A. ©Spraying Systems Co. 2007 P.O. Box 7900, Wheaton, IL 60189-7900 USA Tel: 1.800.95.SPRAY Intl. Tel: 1.630.665.5000 Fax: 1.888.95.SPRAY Intl. Fax: 1.630.260.0842 www.spray.com A fast spray nozzle Electrically-actuated PulsaJet® nozzles achieve speeds up to 10,000 cycles per minute and are ideal for PWM flow control. PulsaJet nozzles also offer accurate spray placement, excellent spray pattern integrity and a choice of hydraulic...

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