Data Sheet for Product

POWERS™ CONTROLS No. 4 Pneumatic Damper Actuator Technical Instructions
Document Number 155-032P25
November 10, 2021
Siemens Industry, Inc. Page 3
Specifications
Effective diaphragm area 11 inches
2
(71 cm
2
)
Stroke 4 inches (102 mm)
Stroke (Hesitation model) 3 inches (76 mm)
Stem Stainless steel
Housing Steel with cathodic epoxy electrocoat
Diaphragm Ozone-resistant, EPDM rubber
Bearing Oilite® sintered bronze bushing in
aluminum die casting
Maximum air pressure 30 psig (210 kPa)
Nominal spring ranges 3 to 7 psi (21 to 50 kPa)
3 to 13 psi (21 to 90 kPa)
5 to 10 psi (35 to 70 kPa)
8 to 13 psi (55 to 90 kPa)
Nominal spring range (Hesitation model) 2 to 3; 8 to 13 psi
(14 to 21; 55 to 90 kPa)
Ambient temperature range
Operating -20°F to 200°F (-29°C to 93°C)
Storage -20°F to 200°F (-29°C to 93°C)
Air connection elbow barb fitting for
1/4-inch OD plastic tubing Installed in 1/8-inch NPT opening
Type of mounting Front, bracket, pivot
Thrust and torque rating See Table 2
Dimensions See Figure 15
Agency Approvals Complies with UL555 and UL555S
Table 2. Thrust and Torque Rating.
Nominal
Spring
Range
Maximum Thrust lb (N)
Torque Rating* lb-in (Nm)
Full Stroke Forward
Spring Return
(No stroke)
0 psig (0 kPa)
Gradual
Operation
2-position Operation or
with Positioner
15 psi
(103 kPa)
18 psi
(124 kPa)
25 psi
(172 kPa)
15 psi
(103 kPa)
18 psi
(124 kPa)
25 psi
(172 kPa)
3-7 psi
(21-50 kPa)
88 (391)
121 (538)
198 (881)
33 (147)
30 (3.4)
46 (5.2)
46 (5.2)
46 (5.2)
3-13 psi
(21-90 kPa)
22 (98)
55 (245)
132 (587)
33 (147)
30 (3.4)
30 (3.4)
46 (5.2)
46 (5.2)
5-10 psi
(35-70 kPa)
55 (245)
88 (391)
165 (734)
55 (245)
30 (3.4)
77 (8.7)
77 (8.7)
77 (8.7)
8-13 psi
(55- 90 kPa)
22 (98)
55 (245)
132 (587)
88 (391)
30 (3.4)
123 (14)
123 (14)
123 (14)
2-3, 8-13 psi
(14-21, 55-90 kPa)
Hesitation model
22 (98)
55 (245)
132 (587)
22 (98)
23 (2.6)
—
—
—
* With maximum hysteresis of 2.5 psi (17.2 kPa) @ 90° rotation.