Schneider Electric M556 Series Pneumatic Damper Actuators
Pneumatic Damper Actuators
M556 Series
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| Wholesale Model No | Descriptions | Spring Range psig | Mounting | Cat # |
| 60° to 120° adj. linkage to accept 1/2 in. shafts w/positioner (with 5 psi span feedback spring). | 8 to 13 | Swivel-mtd. | M556-14 | |
| w/Positioner, for Keystone butterfly valve. | 8 to 13 | Swivel-mtd. | M556-1402 | |
| 60° to 120° adjustable linkage to accept 1/2 in. shafts. | 8 to 13 | Swivel-mtd. | M556-51 | |
| M556-5101 | No linkage. Hole in end of shaft is tapped to receive a 3/8” - 16 machine screw. | 8 to 13 | Swivel-mtd. | M556-5101 |
| For Keystone butterfly valve. | 8 to 13 | Swivel-mtd. | M556-5102 |
| Construction: | |
| Housing: | Glass-filled nylon |
| Diaphragm: | Neoprene, rolling type |
| Shaft: | Stainless Steel on M556, M573, M574 |
| Nickel plated steel on M572, M583, M584 | |
| Stroke: | Refer to Model Chart |
| Spring: | Retract actuator shaft on loss of air pressure |
| Ambient temperature limits: | -20 to 180°F (-29 to 82°C) |
| Supply air pressure: | Clean, dry, oil free air required |
| Nominal: | Nominal 20 psig (138 kPa) |
| M580 Series nominal 0 to 15 psig (0 to 103 kPa) | |
| Maximum: | 30 psig (207 kPa) |
| Air consumption (positioner models): |
0.017 scfm |
| Adjustments: | |
| Hesitation stroke start point: | 4 psig (28 kPa); stroke adjustable 20% to 70% prior to 4 psig (M58X only) |
| Finish stroke start point: | 8 psig (55 kPa); stroke adjustable 80% to 30% after 8 psig (M58X only) |
| Connections: | Barbed fitting for 1/4 in. O.D. plastic tubing |
| Dimensions: | |
| M556 Series: | 5-3/4 dia. x 17 L in. (146 x 432 mm) |
| M573 Series: | 3-3/4 dia. x 14 L in. (95 x 356 mm) |
| M574 Series: | 4-5/8 dia. x 15-1/8 L in. (117 x 384 mm) |
