{"product_id":"grundfos-cmb-5-46","title":"Grundfos CMB5-46 PM1 0.9kW Automatic Compact Multistage Home Water Pressure Booster Pump Set | Cast Iron \u0026 Stainless Steel","description":"\u003cp\u003eThe Grundfos CMB5-46 PM1 is a compact multistage home water pressure booster pump set designed for automatic water pressure boosting in domestic and light commercial applications. Combining a Grundfos CM multistage pump with an integrated PM1 pressure manager, this system automatically starts and stops based on water demand while providing built-in dry-running protection. Built with a cast iron pump housing, stainless steel impellers, and EPDM rubber components, it offers dedicated performance for household water boosting in showers, bathrooms, and general domestic water supply systems.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCombines a Grundfos CM multistage pump with a PM1 pressure manager.\u003c\/li\u003e\n  \u003cli\u003eEnables automatic start and stop operation based on system water demand.\u003c\/li\u003e\n  \u003cli\u003eIncludes built-in dry-running protection to safeguard the pump.\u003c\/li\u003e\n  \u003cli\u003eEquipped with an integrated return valve.\u003c\/li\u003e\n  \u003cli\u003eIncludes a 2 m mains cable fitted with a UK plug for power connection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eProduct Specifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Grundfos\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e CMB5-46 PM1 (CMB5-46PM1)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Home Water Pressure Booster Pump \/ Compact multistage booster set\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRated Power (P2):\u003c\/strong\u003e 0.9 kW\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage \/ Frequency:\u003c\/strong\u003e 1 × 220–240 V, 50 Hz\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePort Sizes:\u003c\/strong\u003e 1-1\/4\" inlet x 1\" outlet\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Flow:\u003c\/strong\u003e 83 L\/min (Rated Flow: 4.7 m³\/h)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Head:\u003c\/strong\u003e 46 m (Rated Head: 38.6 m)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Current Consumption:\u003c\/strong\u003e 5.0–5.4 A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRated Speed:\u003c\/strong\u003e 2750–2790 rpm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePump Speed (Data Reference):\u003c\/strong\u003e 2900 rpm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStart Pressure:\u003c\/strong\u003e PM1 – 2.2 bar\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnclosure Class (IEC 34-5):\u003c\/strong\u003e IP55\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsulation Class (IEC 85):\u003c\/strong\u003e F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePump Housing Material:\u003c\/strong\u003e Cast iron (EN-JL1030 \/ ASTM 30 B)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eImpeller Material:\u003c\/strong\u003e Stainless steel (DIN W.-Nr. 1.4301 \/ AISI 304)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRubber Components:\u003c\/strong\u003e EPDM\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Shaft Seal:\u003c\/strong\u003e AVBE\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLiquid Temperature Range:\u003c\/strong\u003e 0–60 °C (Selected: 20 °C)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLiquid Density:\u003c\/strong\u003e 998.2 kg\/m³\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSelf-Priming:\u003c\/strong\u003e No (Not self-priming)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReturn Valve:\u003c\/strong\u003e Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApprovals \u0026amp; Markings:\u003c\/strong\u003e CE\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eCompatibility \u0026amp; Installation:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplications:\u003c\/strong\u003e Domestic water supply systems, light commercial booster systems, and household water boosting for showers and bathrooms.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstallation Requirements:\u003c\/strong\u003e Must connect to pipework and plug into a ready power point.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeather Resistance:\u003c\/strong\u003e Not weatherproof — must be covered or placed under a shaded area.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003ePackage Includes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eGrundfos CMB5-46 PM1 Home Water Pressure Booster Pump set (includes pump, PM1 pressure manager, and 2 m mains cable with UK plug)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWarranty:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e2 Years General Warranty (Additional +6 Months Warranty available via online registration).\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Choose Grundfos CMB5-46 PM1?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDelivers automatic start\/stop control tuned to immediate water demand.\u003c\/li\u003e\n  \u003cli\u003eFeatures integrated dry-running protection for safe pump operation.\u003c\/li\u003e\n  \u003cli\u003eUtilises stainless steel impellers and a cast iron housing for reliable construction.\u003c\/li\u003e\n  \u003cli\u003eDesigned specifically for household water boosting including showers, bathrooms, and light commercial systems.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Grundfos","offers":[{"title":"WITHOUT INSTALLATION","offer_id":47753097609300,"sku":"CMB-5-46-without-installation","price":4809.0,"currency_code":"MYR","in_stock":true},{"title":"BYPASS INSTALLATION","offer_id":47753097642068,"sku":"CMB-5-46-bypass-installation","price":5409.0,"currency_code":"MYR","in_stock":true},{"title":"YES REPLACEMENT PUMP","offer_id":47753097674836,"sku":"CMB-5-46-yes-replacement-pump","price":5309.0,"currency_code":"MYR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/1859\/3108\/files\/ygmuajhnygwepywgb5kz.png?v=1790925148","url":"https:\/\/bath2u.com\/products\/grundfos-cmb-5-46","provider":"Bath2u.com","version":"1.0","type":"link"}