{"product_id":"grundfos-cmb-3-37-cast-iron-pressure-boosting-pump-for-domestic-use-with-pm1-controller","title":"Grundfos CMB 3-37 Cast Iron Pressure Boosting Pump for Domestic Use with PM1 Controller","description":"\u003cp\u003eThe Grundfos CMB 3-37 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, allowing automatic start and stop operation based on demand while protecting the pump against dry running.\u003c\/p\u003e\n\u003cp\u003eThe pump features a cast iron pump housing combined with multistage stainless steel impellers (AISI 304), providing strength, corrosion resistance, and reliable long-term performance. The unit also includes an integrated non-return valve to ensure stable operation within pressurised systems.\u003c\/p\u003e\n\u003cp\u003eThe pump operates at a rated flow of 3.1 m³\/h with a corresponding head of 27.7 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 37 metres at shut-off. The unit is not self-priming and supports a maximum suction lift of 1 metre.\u003c\/p\u003e\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 integrated PM1 controller operates with a fixed start pressure of 1.5 bar, ensuring consistent and automatic pressure boosting performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFEATURES\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eController: Integrated PM1 pressure manager with automatic start\/stop and dry-run protection\u003c\/li\u003e\n\u003cli\u003eMaximum Flow: approx. 70 L\/min\u003c\/li\u003e\n\u003cli\u003eMaximum Head: approx. 37 m\u003c\/li\u003e\n\u003cli\u003eConstruction: Cast iron pump housing with stainless steel impellers (AISI 304)\u003c\/li\u003e\n\u003cli\u003eImpellers: Multistage design (4-stage)\u003c\/li\u003e\n\u003cli\u003eReturn Valve: Integrated for stable system operation\u003c\/li\u003e\n\u003cli\u003eSuction Capability: Maximum 1 m (non self-priming)\u003c\/li\u003e\n\u003cli\u003eMaximum Operating Pressure: 10 bar\u003c\/li\u003e\n\u003cli\u003eEnclosure Class: IP55\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Grundfos","offers":[{"title":"Default Title","offer_id":50710822027511,"sku":"97530133","price":790.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/0116\/3767\/files\/grundfos-cmb-3-37-cast-iron-pressure-boosting-pump-for-domestic-use-with-pm1-controller.png?v=1777015299","url":"https:\/\/foundationpumps.com.au\/products\/grundfos-cmb-3-37-cast-iron-pressure-boosting-pump-for-domestic-use-with-pm1-controller","provider":"Foundation Pumps","version":"1.0","type":"link"}