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Star-ZD 25/6 | Wilo
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Star-ZD 25/6

Article number: 4111288
Technical data
Tender text

This circulator is suitable only for drinking water.

Domestic hot water circulator, glandless twin-head pump in the same housing with switchover valve, for pipe installation with screwed connection, blocking-current proof motor and manual 3-stage speed connection. Pump housing made of bronze, impeller made of plastic, ceramic shaft, resin-impregnated carbon friction bearings.

Operating Data
Max. fluid temperature Tmax 65 °C
Min. fluid temperature Tmin 2 °C
Min. ambient temperature Tmin 0 °C
Max. ambient temperature Tmax 40 °C
Maximum operating pressure PN 10 bar
Max. permitted total water hardness 3.21 mmol/l (18°dH)
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 128 W
Max. speed nmax 2700 1/min
Rated current IN 0.56 A
Protection class motor IP44
Threaded cable connection 1 x PG11
Pump housing Bronze
Impeller PPE-GF30
Shaft Oxide ceramic
Bearing Carbon, synthetic resin-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-ZD 25/6
Net weight, approx. m 6.5 kg
Article number 4111288

Installation and operating instructions


Article Number 4236978
Edition 2019-08
Page format 105.1 x 148.2 mm
Number of pages 184
PDF (5 MB)

Certificate REACH

REACH Regulation

Edition 2021-05
Page format 209.9 x 297.0 mm
Number of pages 4
PDF (212 KB)