Johnson Controls D-3031 Pneumatic Piston Damper Actuator
The D-3031 Pneumatic Actuator is designed primarily for damper positioning on small terminal units. Models, furnished with 1 inch (25 mm) stroke, have two movable adjustment stops to facilitate adjusting the stroke in 1/8 inch increments. The D-3031 features a polycarbonate top and body and a threaded 5/16 inch (8 mm) diameter piston rod for convenient linkage attachment. The D-3031 is the unit replacement for D-160 and D-251 #2S actuators.
• high power to size ratio for locations in confined spaces
• swivel or rigid mounting options for flexible mounting configurations
• optional mounting kits to cover any application and replacement of obsolete units
• barbed fitting for 5/32 inch or 1/4 inch O.D. tubing
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| Cat # | Stroke | Nominal Spring Range, psig (kPa) | Supply Pressure, psig (kPa). | Force, lb (Newtons) | Torque Output for 90° Rotation |
| D-3031-3 | Power Return | 5-10 (35-70) | 20 (140) | 28 (124.6) 14 (62.3) | 39.2 in·lb (4.4 N·m) 19.5 in·lb (2.2 N·m) |
| D-3031-4 | Power Return | 8-13 (56-91) | 20 (140) | 19.6 (87.2) 22.4 (99.6) | 27.3 in·lb (3.1 N·m) 31.4 in·lb (3.6 N·m) |
| D-3031-18 | 10 - 15 (70-105) |
| Mounting | Rigid or Swivel Type | ||
| Control Air Pressure | 0 to 15 or 20 psig (0 to 105 or 140 kPa), 25 psig maximum (175 kPa maximum) |
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| Stroke | 1 inch (25 mm): Adjustable with stops to 7/8, 3/4, 5/8, and 1/2 inch (22, 19, 16, and 13 mm) |
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| Effective Diaphragm Area | 2.8 in.2 (18 cm2) | ||
| Spring Ranges | D-3031-3, 5 to 10 psig (35 to 70 kPa) D-3031-4, 8 to 13 psig (56 to 91 kPa) |
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| Piston Rod | Threaded, 5/16 inch diameter | ||
| Air Connection | Barbed fitting for 5/32 or 1/4 inch O.D. Polytubing | ||
| Ambient Temperature Conditions |
–20 to 150°F (–29 to 66°C) | ||
| Materials | Actuator and Nuts: Polycarbonate Stops: Nylon Swivel Washers: Oilon Diaphragm: Synthetic Elastomer Rod and Spring: Steel |
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| Dimensions | 2-1/2 inch diameter x 4-15/16 inch long (barbed fitting extends 5/16 inch from diameter) |
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