Data Sheet for Product

Technical Instructions Powertop Two-Way Valves Normally Open
Document No. 155-310P25
July 18, 2012
Page 2 Siemens Industry, Inc.
Specifications
Inches (mm)
Line sizes 1.0 (25)
1.25 (32)
Capacity See
Table 2 through Table 5
Body style Angle Union Outlet
Body connection Angle Female × Union Male
Action Normally Open (NO)
Stem travel .50-inch (15 mm)
Valve body rating ANSI 250. See
Table 6.
Material
Body and seat Bronze
Stem Stainless steel
Packing EP rubber
Operating
Controlled medium Water, steam, ethylene glycol solution
Maximum medium temperature 250°F (121°C)
Maximum medium inlet pressure
Water See
Table 6
Steam 15 psig (103 kPa)
Maximum recommended differential pressure for modulating service
Water 20 psig (138 kPa)
Steam 15 psig (103 kPa)
Close-off
Normally Open See
Figure 1.
Flow characteristic Equal percentage
Actuator
Nominal spring range 2 to 6 psi (12 to 41 kPa)
Diaphragm
Effective area 11-inch
2
(71 cm
2
)
Ambient temperature range 35°F to 140°F (2°C to 60°C)
Maximum air supply to the diaphragm 30 psig (207 kPa)
Material Silicone rubber
Miscellaneous
Dimensions See
Figure 4.
Weight 3 lb (1.4 kg)
Service Kits
Diaphragm Replacement Kit (package of 5) 658-166
Stem Repacking Kit (for 10 valves) 658-167
Actuator assembly 658-067