Product Overview
Valves
www.usa.siemens.com/hvac
D-200
Valve Size ...................................................... 1/2" (15 mm), 3/4" (20 mm)
Valve Body Style ...................................................................Angle Union
Valve Action .............................................................Normally Open (NO)
Valve Stroke ..........................................................................1/4" (6 mm)
Valve Body Rating .......................................................... ANSI Class 125
Diaphragm
Effective Area ................................................................ 3.4 in.
2
(22 cm
2
)
Material.......................................................................... Silicone Rubber
Ambient Temperature Range ......................... 30 to 160°F (-1 to +71°C)
Maximum Air Pressure ................................................. 30 psi (207 kPa)
Maximum Medium Temperature ...................................... 250°F (121°C)
Controlled Medium ....................Steam, Water, Ethylene Glycol Solution
Maximum Medium Inlet Pressure
Water .................................................Refer to Valve Body Rating Table
in Reference section.
Saturated Steam ......................................................... 15 psi (103 kPa)
Maximum Recommended Differential Pressure
for Modulating Service
Water ............................................................................ 20 psi (138 kPa)
Seam ............................................................................ 15 psi (102 kPa)
Dimensions shown in inches (mm).
656 Powermite Two-way Specifications
Dimensions and Weights
Accessories & Service Kits
D-219
656 Powermite Two-way Product Ordering
Valve Size Cv Close-offs Spring Range Part No.
1/2" (15 mm) 2.1 95 psi (655 kPa) 3 to 8 psi (21 to 55 kPa) 656-0017
1/2" (15 mm) 2.1 95 psi (655 kPa)
5 to 10 psi (34 to 69 kPa) 656-0019
3/4" (20 mm) 4.6 95 psi (655 kPa) 3 to 8 psi (21 to 55 kPa) 656-0018
3/4" (20 mm) 4.6 95 psi (655 kPa)
5 to 10 psi (34 to 69 kPa) 656-0021
Valve Size
Dimensions
WeightA B C D
1/2" (15 mm) 2-15/16" (75 mm) 1-1/4" (32 mm) 13/16" (21 mm) 2-5/8" (67 mm) 2.2 lb. (1.0 kg)
3/4" (20 mm) 3-1/16" (78 mm) 1-5/16" (33 mm) 1-1/8" (29 mm) 2-7/8" (73 mm) 2.7 lb. (1.2 kg)