{"product_id":"wilo-star-rs-25-6-g1-glandless-solar-geyser-circulation-pump","title":"Wilo Star-RS 25\/6 G1½\" Glandless Solar Geyser Circulation Pump","description":"\u003cul\u003e\n\u003cli\u003eHeavy-duty, glandless wet-rotor circulation pump designed for forced-circulation solar geyser water heating systems, domestic hot water loops, and hydronic heating.\u003c\/li\u003e\n\u003cli\u003eFeatures a 6-metre maximum delivery head to effectively overcome pipe friction resistance across roof-mounted solar collectors and geyser loops.\u003c\/li\u003e\n\u003cli\u003eManual 3-stage speed selector switch allows custom speed adjustment to match system flow rate requirements and optimize thermal efficiency.\u003c\/li\u003e\n\u003cli\u003eHigh-temperature resistant design withstands continuous fluid temperatures ranging from -10 °C up to +110 °C.\u003c\/li\u003e\n\u003cli\u003eCast iron housing treated with a cataphoretic (KTL) coating to prevent corrosion caused by thermal cycles and condensation.\u003c\/li\u003e\n\u003cli\u003eGlandless pump construction ensures ultra-quiet operation and eliminates mechanical shaft seal maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eFeatures\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e3-Speed Selector Switch: Adjust flow rates between 3 preset performance levels for optimal balance of power consumption and thermal transfer.\u003c\/li\u003e\n\u003cli\u003eSolar Geyser Optimized: Engineered to handle the elevated fluid temperatures common in solar thermal collector loops.\u003c\/li\u003e\n\u003cli\u003eCataphoretic Coated Body: Special anti-corrosion coating protects the pump housing against rust and environmental wear.\u003c\/li\u003e\n\u003cli\u003eImpedance-Proof Motor: Blocking-current proof motor eliminates the need for external motor overload protection.\u003c\/li\u003e\n\u003cli\u003eEasy Cable Entry: Dual-sided cable entry options on the terminal box simplify electrical wiring in tight spaces.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eSpecifications\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003eModel \/ Part Number: Star-RS 25\/6 \/ Star RS 25\/6 (4032956)\u003c\/li\u003e\n\u003cli\u003eProduct Type: Glandless Solar \u0026amp; Hot Water Circulation Pump\u003c\/li\u003e\n\u003cli\u003eMaximum Delivery Head: 6 Metres (0.6 bar)\u003c\/li\u003e\n\u003cli\u003eMaximum Volume Flow: Approx. 3.5 m³\/h (3,500 L\/h)\u003c\/li\u003e\n\u003cli\u003eThreaded Pipe Connection: G 1½\" (1.5 Inch Male Thread)\u003c\/li\u003e\n\u003cli\u003eNominal Width: DN 25 (1 Inch \/ 25 mm)\u003c\/li\u003e\n\u003cli\u003eOverall Port-to-Port Length: 180 mm\u003c\/li\u003e\n\u003cli\u003ePower Supply: 230V AC (50 Hz), Single Phase\u003c\/li\u003e\n\u003cli\u003ePower Consumption (P1): 43W (Speed 1) \/ 61W (Speed 2) \/ 84W (Speed 3)\u003c\/li\u003e\n\u003cli\u003eFluid Temperature Range: -10 °C to +110 °C\u003c\/li\u003e\n\u003cli\u003eMaximum Operating Pressure: 10 Bar (1000 kPa)\u003c\/li\u003e\n\u003cli\u003eProtection Class: IP44\u003c\/li\u003e\n\u003cli\u003eImpeller Material: Glass-Fiber Reinforced Synthetic (PP-GF40)\u003c\/li\u003e\n\u003cli\u003ePump Housing Material: Cast Iron (EN-GJL-200 with KTL Coating)\u003c\/li\u003e\n\u003cli\u003eApplication: Solar Geyser Circulation Systems, Domestic Hot Water Systems, Hydronic Heating, HVAC Systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eWhat's in the Box?\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Wilo Star-RS 25\/6 Circulation Pump\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e1 x Installation and Operating Manual\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Wilo","offers":[{"title":"Default Title","offer_id":43153318346823,"sku":"70503606","price":1299.9,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0577\/6598\/6375\/files\/Shopify--2026-08-31T141157.541.png?v=1788186908","url":"https:\/\/philtron.co.za\/products\/wilo-star-rs-25-6-g1-glandless-solar-geyser-circulation-pump","provider":"Philtron","version":"1.0","type":"link"}