Product Overview

4 Wilo-Stratos
Heating, air-conditioning, cooling
High-efficiency pumps (single pumps)
Technical Data Wilo-Stratos
Wilo-Stratos...
1.25x3-20 1.25x3-25 1.25x3-30 1.25x3-35 1.5x3-40 2x3-35 3x3-30 3x3-40
Approved fluids (other fluids on request)
Heating water ••••••••
Water glycol mixtures up to 50% concen-
tration
••••••••
Power
Max. head H
max
20 ft 23 ft 36 ft 30 ft 39 ft 36 ft 33 ft 43 ft
Max. head H
max
6 m 7 m 11 m 9 m 12 m 11 m 10 m 13 m
Max. flow Q
max
31 US GPM 35 US GPM 48 US GPM 57 US GPM 84 US GPM
128 US
GPM
181 US
GPM
273 US
GPM
Max. flow Q
max
7 m
3
/h 8 m
3
/h 11 m
3
/h 13 m
3
/h 19 m
3
/h 29 m
3
/h 41 m
3
/h 62 m
3
/h
Permitted field of application
Temperature range for applications in heat-
ing, ventilation & air-conditioning systems
at max. ambient temperature of +40 °C
+14 to +230 °F (-10 to +110 °C)
Max. ambient temperature T 104 °F
Max. ambient temperature T 40 °C
Pipe connections
Nominal flange diameter Dia 1.25 " 1.25 " 1.25 " 1.25 " 1.5 " 2 " 3 " 3 "
Non ANSI flange (oval, rotated 90°) ••••– –––
Non ANSI flange (oval) ––––• –––
HV pump flange –––––• ––
125# ANSI flange ––––––••
Electrical connection
Input power - single phase U 230 V 230 V 230 V 230 V 230 V 230 V 230 V 230 V
Input frequency f 60 Hz 60 Hz 60 Hz 60 Hz 60 Hz 60 Hz 60 Hz 60 Hz
Motor/electronics
Speed control Frequency converter
Degree of protection Enclosure 2
Insulation class HHHHHHHH
Materials
Pump volute Grey cast iron (EN-GJL-250)
Impeller Engineered composite (PPS - 40% GF)
Engineered com-
posite (PP - 50%
GF)
Pump shaft Stainless steel (X46Cr13)
Bearing Carbon, metal impregnated
Minimum suction head
Minimum suction head at 122 °F (50°C) 4.3 psi 4.3 psi 4.3 psi 4.3 psi 7.1 psi 7.1 psi 10.0 psi 10.0 psi
Minimum suction head at 203 °F (95°C) 14.2 psi 14.2 psi 14.2 psi 14.2 psi 17.1 psi 17.1 psi 21.3 psi 21.3 psi
Minimum suction head at 230 °F (110°C) 22.8 psi 22.8 psi 22.8 psi 22.8 psi 25.6 psi 25.6 psi 32.7 psi 32.7 psi
• = available, - = not available