Grundfos 99338774 - MTR 5-20/20 A-M-A-HUUV
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Vertical multistage pump for tank top mounting. For machine tool coolant, deionized water, and process liquid applications. Nominal performance: 30.4US gpm at 497.7ft. Rated 220-277D/380-480YV, 3.0-Phase, 60 Hz. Power 7.5HP Voltage 220-277D/380-480YV Phase 3.0-Phase Max Flow 30.4US gpm Max Head 497.7ft Max Pressure 362.59psi Grundfos World's largest pump manufacturer — engineering and manufacturing in 17 countries since 1945 Industrial Grade NEMA Premium / IE3 60Hz motor — reduces operating cost over service life Authorized Distributor Genuine Grundfos product — full manufacturer warranty coverage Expert Support Technical help available — call (781) 281-8905 or chat Why This Product Tank Top Installation MTR installs directly on the tank lid — no pipe supports, no baseplate, no inline piping modifications. Ready to run in the space the tank already occupies. Stainless Steel Throughout All wetted parts in stainless steel. No corrosion from coolants, deionized water, cutting fluids, or mild process chemicals. Multistage for High Head in Small Diameter Multiple stages in a 4" or 6" diameter column provide the head of a much larger pump. Ideal where vertical space exists but floor space is limited. Wide Flow and Head Range MTR series covers 0.5 to 16 m³/h flow and up to 235 m head. Confirms correct model for your system requirements. MTRE Variable Speed Option MTRE adds an integrated frequency converter for constant pressure control. Same tank top installation, no external VFD required. Genuine Grundfos Parts Available As an authorized Grundfos distributor, PumpStop stocks and can source MTR repair kits, mechanical seals, and service components. Model Information — 99338774 Series: MTR Impeller Material: Stainless steel Shaft Seal: HUUV Technical Specifications Model Number 99338774 Product Series MTR Series Description Submersible Multistage Pump — Tank Top Power 7.5HP Voltage 220-277D/380-480YV Phase 3.0-Phase Frequency 60 Hz Motor Speed 3510-3550rpm Pump Speed 3526rpm Full Load Current 18,4-16,2/10,6-9,30A Motor Type 132DA Motor Protection PTC Motor Efficiency Class NEMA Premium / IE3 60Hz Motor Efficiency 89.5-89.5% Insulation Class F Protection Class (IP) IP55 Dust/Jetting Nominal Flow 30.4US gpm Nominal Head 497.7ft Max Operating Pressure 362.59psi Max Fluid Temperature 194°F Max Ambient Temperature 140°F Outlet Connection 1 1/4inch Pipe Standard Square / Rp Impeller Material Stainless steel Shaft Seal HUUV Approvals / Certifications CE, EAC, UKCA Important Notices Electrical Verify supply voltage, phase, and frequency match nameplate before installation: 220-277D/380-480YV, 3.0-Phase, 60 Hz. Temperature limits Do not exceed max fluid temperature 194°F or max ambient temperature 140°F. Exceeding limits damages seals and motor insulation. Dry running Do not run dry. MTR pumps use the pumped fluid to lubricate the shaft seal. Dry running destroys the seal within seconds. Install dry-run protection on all automatic installations. Maintenance Refer to the Grundfos Installation and Operating Manual (IOM) for correct installation, commissioning, and maintenance. Contact PumpStop for documentation. Documentation ✓ Installation and Operating Manual (IOM) — MTR Series ✓ Product Data Sheet — 99338774 ✓ Service Manual and Spare Parts List Need the IOM, data sheet, or spare parts list? Contact PumpStop and we'll send it over. Before You OrderConfirm model code, voltage, phase, and frequency match your installation. For sizing help, spare parts, or documentation, call (781) 281-8905 or chat with PumpStop. Grundfos — 99338774 · 99338774Authorized Grundfos Distributor · pump-stop.com