Grundfos DMX 1120-5 Mechanical Dosing Pump 1120 L/h 5 Bar

KEY FEATURES 1120 L/h nominal dosing capacity at 50 Hz 5 bar maximum operating pressure High-capacity positive displacement diaphragm dosing pump Mechanically coupled diaphragm drive PVC dosing head Long-life PTFE-coated diaphragm PVC valve balls PTFE/composite valve seats FKM/rubber valve gaskets Ball valve liquid-end design Handles liquids up to 400 mPa·s viscosity VFD-ready motor speed adjustment for dosing capacity control Diaphragm fully guided during suction and discharge strokes Robust aluminium pump housing Standard inlet and outlet non-return valves 75 mm cementing-type inlet and outlet connections Liquid temperature range from 0 to 40 °C 3 × 230/400 V, 50 Hz three-phase motor 2 kW power input Maximum frequency of 100 Hz IP65 enclosure rating CE, EAC and CNROHSEX approvals The Grundfos DMX 1120-5 is a versatile high-capacity positive displacement diaphragm dosing pump designed for reliable chemical dosing in demanding industrial and process applications. Its robust aluminium construction, PVC dosing head and mechanically coupled diaphragm drive provide dependable dosing performance for high-volume chemical metering requirements. The diaphragm is mechanically coupled through a precise gear-eccenter-tappet system to a high-efficiency AC motor. Dosing capacity is adjusted by varying the motor speed using a frequency converter coupled directly to the motor. This configuration is prepared for VFD operation and is supplied without manual control. The diaphragm is fully guided during suction and discharge strokes without spring return, supporting reliable operation in demanding process environments. This configuration features a PVC dosing head, PTFE-coated diaphragm, PVC valve balls, PTFE/composite valve seats and FKM/rubber valve gaskets. With a nominal dosing capacity of 1120 L/h at 50 Hz, maximum operating pressure of 5 bar and compatibility with liquids up to 400 mPa·s viscosity, the pump is suitable for compatible high-capacity chemical dosing and industrial process applications. ADDITIONAL FEATURES Mechanically coupled PTFE-coated diaphragm Fully guided diaphragm during suction and discharge strokes No spring-return mechanism Easy-to-install and operate design Robust aluminium enclosure Dosing flow variation ±2% (FS) Linearity ±4% (FS) VFD-ready motor configuration Dosing capacity adjustment through motor speed variation Without manual control Standard inlet non-return valve Standard outlet non-return valve Cementing-type inlet and outlet connections Inlet connection size: 75 mm Outlet connection size: 75 mm Maximum permissible inlet pressure of 0 bar Liquid temperature range from 0 to 40 °C Maximum electrical frequency of 100 Hz IP65 motor enclosure APPLICATIONS Process engineering, water treatment, wastewater treatment, industrial chemical dosing, chemical treatment, disinfection, pH adjustment and other compatible applications requiring reliable high-capacity chemical metering at pressures up to 5 bar. PRODUCT PACKAGE INCLUDES Grundfos DMX 1120-5 Mechanical Dosing Pump SPECIFICATIONS Specification Details Product Name Grundfos DMX 1120-5 Product Number 99592080 Product SKU GRU-99592080 Model / Configuration DMX 1120-5 D-PVC/V/PVC-X-E2RRXE0AG EAN Number 5713831567448 Pump Type Positive displacement diaphragm dosing pump Diaphragm Drive Mechanically coupled Nominal Flow Rate 1120 L/h at 50 Hz (approx. 295.86 US GPH) Maximum Operating Pressure 5 bar (approx. 72.52 psi) Number of Dosing Heads 1 Maximum Viscosity 400 mPa·s Pump Housing Aluminium Dosing Head Material PVC Diaphragm PTFE-coated Valve Ball Material PVC Valve Seat Material PTFE / Composite Valve Gasket Material FKM / Rubber Valve Configuration Ball valves Inlet Non-Return Valve Standard Outlet Non-Return Valve Standard Inlet Connection Cementing Outlet Connection Cementing Inlet Connection Size 75 mm Outlet Connection Size 75 mm Maximum Permissible Inlet Pressure 0 bar Liquid Temperature Range 0 to 40 °C Power Input (P1) 2 kW (approx. 2.68 HP) Rated Voltage 3 × 230/400 V Mains Frequency 50 Hz Maximum Frequency 100 Hz Enclosure Class IP65 Control Variant Without manual control Frequency Converter Prepared for VFD Cable Included No Power Plug No plug Diaphragm Leakage Detection No Net Weight 83 kg (approx. 183.0 lb) Gross Weight 91.7 kg (approx. 202.2 lb) Shipping Volume 0.995 m³ Approvals CE, EAC, CNROHSEX ADDITIONAL RESOURCES PRODUCT BROCHURE Additional information about Grundfos DMH Mechanical Dosing Pumps are outlined in the DMH product brochure. DOWNLOAD x PRODUCT INFORMATION SHEET (PIS) Detailed information about the product, is provided in the product information sheet below. DOWNLOAD