Star-STG 25/4 | Wilo
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Star-STG 25/4

Technical data
Tender text

Glandless circulation pump with special hydraulics for primary circuits in solar and geothermal systems. With manual 3-stage speed connection and blocking-current proof AC motor. Cast iron pump housing with cataphoretic coating. Impeller made of GF polypropylene. Stainless steel shaft with metal-impregnated carbon plain bearings.

Operating data
Fluid media
Water
Fluid temperature T
-10 °C
Ambient temperature T
-10 °C
Maximum operating pressure PN
10 bar
Motor data
Interference emission
EN 61000-6-3
Interference immunity
EN 61000-6-2
Mains connection
1~230 V, 50 Hz
Power consumption P1 max
48 W
Max. speed nmax
2720 1/min
Rated current IN
0.21 A
Protection class motor
IP44
Threaded cable connection
1 x PG11
Materials
Pump housing
Cast iron
Impeller
PP
Shaft
Stainless steel
Bearing
Carbon, metal-impregnated
Installation dimensions
Pipe connection on the suction side DNs
G 1½
Pipe connection on the discharge side DNd
G 1½
Port-to-port length L0
180 mm
Ordering information
Brand
Wilo
Product description
Star-STG 25/4
Net weight, approx. m
3 kg
Article number
4050265
Downloads

Installation and operating instructions

Wilo-Star ST 15/40

Article Number 2028694
Edition 0009
Page format A4
Number of pages 122
PDF (59 KB)

Wilo-Star STG

Article Number 4176741
Edition 2012-11
Page format A6
Number of pages 2
PDF (3 MB)

Wilo-Star STG

Article Number 4176741
Edition 2012-11
Page format A6
Number of pages 29
PDF (2 MB)

Certificate REACH (Documents)

REACH regulation

Edition 2020-08
Page format 209.9 x 297.0 mm
Number of pages 2
PDF (158 KB)