2
Standard Circulating Pumps
Product review: Wilo-Star/Star S
Wilo-Star/Star S
Range: Wilo-Star
>Single head pumps:
• Wet rotor circulation pump, with flanged or
union connections
>Applications:
• Cast iron body for hot-water heating sys-
tems of all kinds, industrial circulation sys-
tems, cold-water systems and air-conditio-
ning systems
• Bronze body for domestic hot water appli-
cations
>Special features/product advantages:
• Suitable for any installation position with
horizontal shaft; terminal box in 3-6-9-12
o'clock position
Range: Wilo-Star S
>Single head pumps:
• Wet rotor circulation pump, with flanged or
union connections. Preselectable speeds to
adjust the capacity on "S" versions
>Applications:
• Cast iron body for hot-water heating sys-
tems of all kinds, industrial circulation sys-
tems, cold-water systems and air-conditio-
ning systems
• Bronze body for domestic hot water appli-
cations
>Special features/product advantages:
• Suitable for any installation position with
horizontal shaft; terminal box in 3-6-9-12
o'clock position
• Three pre-selectable speed stages for load
adjustment ("S" type only)
H [ft]
0
H [m]
5
10
15
20
25
4 8 12 16 20 24 28
Q [US gpm]
0
Q [m
3
/h]
0
1
2
4
3
6
7
5
8
Star 21
Star 32 F
Star 30 F
Star 16
Star 5
Star 17 FX
Wilo-Star
Cast iron body
60 Hz
1.0 2.0 3.0 4.0 5.0 6.0 7.00
H [ft]
0
5
10
15
20
25
2 4 6 8 10 12 14 16 18 20
Q[US gpm]
0
Q [m
3
/h]
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.00
H[m]
0
1
2
4
3
6
7
5
8
9
Star 21
Star 32 BF
Star 16
Star 11
Star 5
Star 3
Star 8
Star 30 BU
Wilo-Star
Bronze body
60 Hz
H [ft]
0
H [m]
5
10
15
20
2 4 6 8 10 12 14
Q [US gpm]
0
Q[m
3
/h]
0.5 1.0 1.5 2.0 2.5 3.0 3.50
0
1
2
4
3
5
6
Star-S 21
Star-S 16
Wilo-Star S
60 Hz
18
Standard Circulating Pumps
Wilo-Star/Star S
Wilo-Star/Star S
Dimensions, weights
metric
Wilo-Star... A B C D E F G H I Ø K Ø L M Weight
approx.
Draw-
ing
No.
[mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [kg]
Star 3 BS 5 127 125 24 23 64 15 81 93.5 128 16 22 – 3.0 4
Star 3 BS 7 127 125 24 23 64 15 81 93.5 128 22 28 – 2.4 4
Star 5 BU 152 130 18 33 76 – 81 93.5 128 – – – 3.0 3
Star 5 BFX 162 150 22 50 81 – 81 93.5 128 – – – 3.3 2
Star 5 FX 162 150 22 50 81 – 81 93.5 128 – – – 3.0 2
Star 8 BS 5 127 125 24 23 64 15 81 93.5 128 16 22 – 3.0 4
Star 8 BS 7 127 125 24 23 64 15 81 93.5 128 22 28 – 2.4 4
Star 11 BU 152 130 18 33 76 – 81 93.5 128 – – – 3.0 3
Star 16 F 162 134 22 34 81 – 82 93.5 132 – – – 3.0 1
Star 16 FX 162 150 22 50 81 – 81 93.5 128 – – – 3.0 2
Star 16 BFX 162 150 22 50 81 – 81 93.5 128 – – – 3.3 2
Star 17 FX 216 176 33 55 108 – 82 96.0 130 – – – 4.9 2
Star 21 F 162 134 22 34 81 – 82 93.5 132 – – – 3.0 1
Star 21 FX 162 150 22 50 81 – 81 93.5 128 – – – 3.0 2
Star 21 BFX 162 150 22 50 81 – 81 93.5 128 – – – 3.2 2
Star 30 BU 152 155 32 35 76 – 82 96 130 – – – 3.5 3
Star 30 F 165 153 31 34 83 – 82 96.0 132 – – 50 3.7 1
Star 32 BF 162 136 24 34 81 – 81 93.5 128 – – 52 3.5 1
Star 32 F 162 136 24 34 81 – 81 93.5 128 – – 52 3.1 1
Star S 16 F 162 154 22 50 81 – 81 93.5 128 – – – 3.0 5
Star S 16 FX 162 154 22 50 81 – 81 93.5 128 – – – 3.0 5
Star S 16 BFX 162 154 22 50 81 – 81 93.5 128 – – – 3.2 5
Star S 21 F 162 154 22 50 81 – 81 93.5 128 – – – 3.0 5
Star S 21 FX 162 154 22 50 81 – 81 93.5 128 – – – 3.0 5
Star S 21 BFX 162 154 22 50 81 – 81 93.5 128 – – – 3.3 5
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