Wilo Star-RS 25/6 G1½" Glandless Solar Geyser Circulation Pump

R 1,299.90
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Sku: 70503606
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  • Heavy-duty, glandless wet-rotor circulation pump designed for forced-circulation solar geyser water heating systems, domestic hot water loops, and hydronic heating.
  • Features a 6-metre maximum delivery head to effectively overcome pipe friction resistance across roof-mounted solar collectors and geyser loops.
  • Manual 3-stage speed selector switch allows custom speed adjustment to match system flow rate requirements and optimize thermal efficiency.
  • High-temperature resistant design withstands continuous fluid temperatures ranging from -10 °C up to +110 °C.
  • Cast iron housing treated with a cataphoretic (KTL) coating to prevent corrosion caused by thermal cycles and condensation.
  • Glandless pump construction ensures ultra-quiet operation and eliminates mechanical shaft seal maintenance.
Features
  • 3-Speed Selector Switch: Adjust flow rates between 3 preset performance levels for optimal balance of power consumption and thermal transfer.
  • Solar Geyser Optimized: Engineered to handle the elevated fluid temperatures common in solar thermal collector loops.
  • Cataphoretic Coated Body: Special anti-corrosion coating protects the pump housing against rust and environmental wear.
  • Impedance-Proof Motor: Blocking-current proof motor eliminates the need for external motor overload protection.
  • Easy Cable Entry: Dual-sided cable entry options on the terminal box simplify electrical wiring in tight spaces.
Specifications
  • Model / Part Number: Star-RS 25/6 / Star RS 25/6 (4032956)
  • Product Type: Glandless Solar & Hot Water Circulation Pump
  • Maximum Delivery Head: 6 Metres (0.6 bar)
  • Maximum Volume Flow: Approx. 3.5 m³/h (3,500 L/h)
  • Threaded Pipe Connection: G 1½" (1.5 Inch Male Thread)
  • Nominal Width: DN 25 (1 Inch / 25 mm)
  • Overall Port-to-Port Length: 180 mm
  • Power Supply: 230V AC (50 Hz), Single Phase
  • Power Consumption (P1): 43W (Speed 1) / 61W (Speed 2) / 84W (Speed 3)
  • Fluid Temperature Range: -10 °C to +110 °C
  • Maximum Operating Pressure: 10 Bar (1000 kPa)
  • Protection Class: IP44
  • Impeller Material: Glass-Fiber Reinforced Synthetic (PP-GF40)
  • Pump Housing Material: Cast Iron (EN-GJL-200 with KTL Coating)
  • Application: Solar Geyser Circulation Systems, Domestic Hot Water Systems, Hydronic Heating, HVAC Systems
What's in the Box?
  • 1 x Wilo Star-RS 25/6 Circulation Pump
  • 1 x Installation and Operating Manual
Vendor Wilo
Type Solar Products and Accessories
Sku 70503606
Barcode 4016322238479
Weight:  1.2 kg

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