{"product_id":"grundfos-cmb-3-46-cast-iron-pressure-boosting-pump-for-domestic-use-with-pm1-controller","title":"Grundfos CMB 3-46 Cast Iron Pressure Boosting Pump for Domestic Use with PM1 Controller","description":"\u003cp\u003eThe Grundfos CMB 3-46 is a compact pressure boosting pump designed for domestic water supply and light commercial applications. It is supplied as a complete booster unit with an integrated PM1 pressure manager, enabling automatic operation based on system demand while protecting the pump from dry running.\u003c\/p\u003e\n\n\u003cp\u003eThe pump features a cast iron housing combined with multistage stainless steel impellers (AISI 304), delivering strength, corrosion resistance, and consistent hydraulic performance. The integrated non-return valve supports stable system operation and prevents backflow.\u003c\/p\u003e\n\n\u003cp\u003eThe pump operates at a rated flow of 3.1 m³\/h with a corresponding head of 30.5 metres. Based on the performance curve, it delivers a maximum flow of approximately 70 L\/min at low head conditions and achieves a maximum head of approximately 46 metres at shut-off. The unit is not self-priming and supports a maximum suction lift of 1 metre.\u003c\/p\u003e\n\n\u003cp\u003eThe unit is powered by a 0.5 kW electric motor operating on a 1 x 220–230 V, 50 Hz supply. The PM1 controller operates with a start pressure of 2.2 bar, ensuring consistent and automatic pressure boosting performance for residential systems.\u003c\/p\u003e\n\n\u003cstrong\u003eFEATURES\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eAutomatic Operation: PM1 controller enables demand-based start\/stop for efficient system control\u003c\/li\u003e\n\u003cli\u003eDry-Run Protection: Built-in protection prevents pump damage during water shortage conditions\u003c\/li\u003e\n\u003cli\u003eSelf-Regulating Pressure System: Maintains consistent pressure without manual adjustment\u003c\/li\u003e\n\u003cli\u003eCompact Booster Design: Pre-assembled unit for quick installation and minimal setup time\u003c\/li\u003e\n\u003cli\u003eNon-Return Valve: Integrated check valve prevents backflow and maintains system pressure\u003c\/li\u003e\n\u003cli\u003eMultistage Hydraulic Design: Ensures smooth pressure delivery across varying demand levels\u003c\/li\u003e\n\u003cli\u003eCorrosion-Resistant Construction: Stainless steel wet-end components enhance durability\u003c\/li\u003e\n\u003cli\u003eLow Maintenance Operation: Simplified design reduces servicing requirements\u003c\/li\u003e\n\u003cli\u003eQuiet Performance: Designed for low noise operation in residential environments\u003c\/li\u003e\n\u003cli\u003ePlug-and-Play Installation: Ready-to-use system with minimal commissioning required\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Grundfos","offers":[{"title":"Default Title","offer_id":50710830776567,"sku":"97530142","price":890.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/grundfos-cmb-3-46-cast-iron-pressure-boosting-pump-for-domestic-use-with-pm1-controller.png?v=1777015674","url":"https:\/\/foundationpumps.com.au\/products\/grundfos-cmb-3-46-cast-iron-pressure-boosting-pump-for-domestic-use-with-pm1-controller","provider":"Foundation Pumps","version":"1.0","type":"link"}