MLZ Series: ANSI Magnetic Drive PFA Lined Pumps

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ISO 9001: Registered

The MLZ series pumps are group 2 ANSI/ASME B73.3 fluoropolymer lined sealless magnetic drive models. They feature separable impellers and inner magnets, as well as readily replaceable front thrust and impeller rings. With no seals to fail, these pumps are ideal for a wide range of chemical applications to help eliminate “reportable release” issues.

Magnetic Drive PFA lined Pumps

All Magnatex pumps and spare parts come with a 1-year unconditional warranty on materials and workmanship.

Transfer-compression molding allows positive, interlocking casing linings 5-6 mm thick that stay in place; ideal for vacuum and higher temperature applications.

  • PFA lining, mechanically attached to ductile iron casing
  • PFA impeller, separable from inner magnet, with readily replaceable impeller ring
  • Shaft support assembly, including integral front thrust ring, optimized to match the suction eye of the impeller for improved NPSHr; can be easily replaced if needed
  • Neodymium rare earth inner magnet encapsulated in CFR-ETFE, separable from impeller
  • Standard SSiC (sintered silicon carbide) front thrust ring
  • Full-diameter SSiC (sintered silicon carbide) shaft provides improved fracture toughness
  • Standard carbon graphite infused PTFE, product lubricated bearings and rear thrust bushing
  • CFR-ETFE rear containment inner shell supported by mechanically superior, GFR polyamide outer shell
  • Optional, proprietary SiC-Z material (non-coated, hybrid SiC with uniform consistency) bearings and wear rings available to provide improved endurance in compromised operating conditions

Materials of Construction

  • PFA Lining
  • Carbon Fiber Reinforced ETFE
  • Sintered Silicon Carbide Shaft
MLZ Breakdown


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MAGNATEX® MTA Series Specifications

Maximum Flow 1,425 GPM
Maximum Head 475 FT @ 206 psi with water
Liquid Temperature 0°F to 250°F
Maximum Power 100 HP
Connections 150lb RF Flanges
Bearings C-PTFE or Optional SiC-Z
Shaft SiC
Casing Gasket GFR-PTFE
Max Working Pressure 150 psig @ 250°F
Impeller Enclosed
Speeds Up to 3550 rpm
Magnets Neodymium
Motor NEMA or Close-Coupled

Magnatex MTA Series Competition Comparison

MAGNATEX COMPETITION
High pressure transfer molding @ 1200psi produces a lining with a dense, uniform thickness and superior surface finish, all of which contribute to superior service life in demanding chemical services. High pressure molding also eliminates any air pockets between the casing lining and the armoring, which is critical in high temperature services. Competitors use a cheaper, atmospheric pressure, rotomolding process which results in a thinner, less dense, more permeable lining material with a less uniform surface finish. Rotomolded linings may have air bubbles trapped behind them which can lead to cracked linings in high temperature applications.
Magnatex PFA linings are 5-6mm thick and therefore will last longer in service than thinner ones of the same material and even longer when compared to the ETFE and PVDF linings offered by most of our competitors. Most competitors' linings are just 3-4 mm thick which means they have proportionately less corrosion and permeation resistance than Magnatex lined pumps.
High pressure molding at 1200 psi produces a positive locking of the lining material and prevents lining movement in high vacuum or low suction pressure applications. Most competitors have no mechanical means of restraining the casing liner which can result in lining movement in high vacuum or low suction pressure applications. Shifting or movement of the lining may result in linings collapsing onto the internal rotating elements leading to catastrophic failure of the pump.
PFA offers the broadest range of resistance to chemical attack, lowest permeation rate and highest temperature capability of all the fluoropolymer materials, which ensures the maximum possible service life for lined magnetic drive pumps. Generally only available in cheaper ETFE (Ethylenetetrafluoroethylene) material which has less chemical resistance, higher permeability and lower temperature resistance than PFA.
The extra long main shaft bushing provides greater stability for operation across the entire hydraulic range of the pump, with smooth, quiet operation and extremely low vibration. Greater shaft support surface area means lower hydraulic loading, less wear and longer service life. Competitors generally offer shorter main shaft bushings resulting in a smaller surface area to support dynamic shaft loads. Less surface area, less pump life.
Completely seamless inner magnet lining which eliminates any potential leak path for the process fluid to reach and attack the inner magnet. Most competitors have seams in the inner magnet lining that can allow aggressive chemicals to penetrate the lining which causes the magnet segments to swell and corrode, leading to catastrophic failure of the pump.