Damper Actuators from Dwyer Instruments, Inc.

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	Actuators Damper Air Filters Pleated Alarms Analyzers Gas Ball Valves Butterfly Valves Carbon Monoxide Detectors Check Valves Flap Foot Inline Plastic PVC Control Valves Controllers Process Temperature Controls: Process Pressure & Vacuum Temperature Converters: Media Counters Digital Covers Protective Current and Voltage Calibrators Data Loggers Fittings Barb Brass Compression Plastic Tube Flow Controllers Mass Flow Gauges Flow Meters Acrylic Air Chemical Gas Liquid Orifice Plate Turbine Ultrasonic Variable Area Water Flow Totalizers Ground Fault Detectors Hammers Impact Hygrometers Thermo Indicators Flow Loop-Powered Position Tank Level Temperature Instrumentation Process Control Instruments Air Velocity Electrical Measuring Intrinsically Safe Barriers Isolators Galvanic Leak Detectors Gas Water Manifolds Valve Manometers Digital Mass Flow Meters Monitoring Equipment and Systems Voltage Panel Meters Digital pH Meters Power Supplies Pressure Gauges Differential Pressure Regulators Air Probes Switch Temperature Pump Controls Pumps Hand Relays Rotameters Sensors Air Velocity Capacitive Flow Mass Air Flow Occupancy Particulate Pressure Solenoid Valves Sound Level Meters Steam Traps Thermodynamic Switches Current Damper Differential Pressure Flow Liquid Level Pressure Speed Temperature Ultrasonic Level Tachometers Temperature Gauges Temperature Sensors Averaging Infrared RTD Thermistor Thermocouple Thermometers Bi-Metal Infrared Thermocouple Timers Transducers Current Electro Pneumatic Pressure Transformers Current Transmitters Air Velocity Differential Pressure Flow Humidity Level Pressure Temperature Valve Actuators Valve Positioners Electro-pneumatic Pneumatic Valves Actuated Air Diaphragm Drain Foot Globe Instrument Miniature Needle Pilot Plastic Plug Pulse Sanitary Vibrators Ball Bin Piston Zener Barriers

Dwyer Instruments, Inc.

Michigan City, IN

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Phone: 219-879-8000

Fax: 219-872-9057

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DDB and DDD Series Direct Coupled Actuators are non-spring return actuators that are perfect for positioning of dampers and valves in HVAC systems. DDB actuators are designed to accept floating control signals and come in a variety of power supplies. DDD actuators are designed to accept 4 to 20 mA or 0 to 10 VDC modulating control signals and are 24 VAC powered. Actuators produce 88 to 265 in-lb (10 to 30 Nm) of torque. Contact factory for optional internal auxiliary switches on DDB.

DDA and DDC Series Direct Coupled Actuators are non-spring return actuators that are perfect for positioning of dampers and valves in HVAC systems. DDA actuators are designed to accept floating control signals and come in a variety of power supplies. DDC actuators are designed to accept 4 to 20 mA or 0 to 10 VDC modulating control signals and are 24 VAC powered. DDC units feature a 0 to 10 VDC feedback signal of damper position. Actuators produce 17 to 70 in-lb (2 to 8 Nm) of torque. Contact factory for optional internal auxiliary switch on DDA.

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