Circulation pump Wilo-Star-Z 25/6-3

Star-Z 25/6-3 Utility Water Circulation Pump

This circulating pump is designed exclusively for domestic water. Designed as a circulation pump, it provides a reliable solution for pipeline installation. The unit features throttle-free operation and manual, three-stage speed switching for optimal adjustment to operating conditions

Main features and advantages

• Designed exclusively for domestic water
• Throttle-free circulation pump with manual three-stage speed switching
• Current resistant motor when blocked
• Body made of bronze (CC499K)
• Impeller made of glass fiber reinforced plastic (PPE-GF30)
• Ceramic shaft, equipped with carbon resin-impregnated plain bearings

Performance data

Parameter	Value
Max. temperature of the pumped liquid (Tmax)	65 °C
Min. temperature of the pumped liquid (Tmin)	2 °C
Ambient temperature (min)	0 °C
Ambient temperature (max)	40 °C
Ambient temperature range (+40 °C)	+2 ... +65 °C
Max. operating pressure (PN)	10 bar
Max. permissible total hardness (circulating water)	3.21 mmol/l (18°dH)

Motor data

Parameter	Value
Interference generation	EN 61000-6-3
Interference immunity	EN 61000-6-2
Mains connection	1~230 V, 50 Hz
Power consumption (P1 max)	99 W
Speed max (nmax)	1900 1/min
Rated current (IN)	0,43 A
Motor protection class	IP44
Cable gland	1 x PG11

Materials and construction

• Pump body: Bronze CC499K
• Impeller: PPE-GF30
• Shaft: Ceramic sinter
• Bearings: Sintered carbon, impregnated with resin

Installation dimensions

• Suction-side connection: G 1½
• Discharge side connection: G 1½
• Installation length _L0: 180 mm

Additional information

• Manufacturer: Wilo
• Product name: Star-Z 25/6-3
• Net weight: approx. 2.6 kg
• Article number: 4047573