MLX Sliding Vane Pumps Ductile-Iron Pumps Designed for Handling all Types of Liquids

Model MLX Sliding Vane Pumps, part of the Heavy Duty Line, are designed for handling all types of liquids from light non-lubricating to viscous abrasive slurries and waste oils. The MLX pump features internal mechanical seals with external ball bearings. The hub assembly in this model features external grease-lubricated spherical roller bearings and can be fitted with a wide selection of Blackmer® mechanical seals. Options include hardened or wear resistant internal components.

Blackmer fully Integrated Unit Assemblies are the pre-engineered and pre-designed drop-in pumping solution. These unit assemblies, include motor, gearbox, baseplate, coupling safety covers, and a MLX 4-inch Sliding Vane Pump. No alignment required with these pre-configured fully Integrated Unit Assemblies as they are ready for immediate drop-in installation.

Features
Performance
Materials
Options
Maintenance
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Features and Benefits

Available with internal mechanical seals with external ball bearings
Modular bearing hub assemblies allow these pumps to be easily reconfigured in the field
Optional wear hardened parts available for abrasive applications
Jacketed pump head option for high temperature operation
Ductile-iron construction with bolt on, internal relief valve
Blackmer mechanical seal and ball bearing construction provide maximum reliability
Symmetrical bearing support assures even loading and wear for long life
External ball bearings are isolated from pumpage by mechanical seals to maximize bearing life and minimize contamination risk
Adjustable relief valve protects pump against excessive pressures
Advantages of sliding vane technology:
- Unique sliding-vane pump design self-adjusts for wear to maintain flow rates
- Excellent self-priming and dry-run capabilities
- Sliding vane design provides sustained performance and trouble-free operation
- Easy maintenance: vanes can be easily replaced without removing the pump from the piping system
- High suction lift and line-stripping capabilities
- Low maintenance and low life-cycle costs

Applications

Chemicals
Petroleum
Paint and coatings
Pulp and paper
Food processing
Asphalts

Chemical Compatibility Guide

Performance and Specifications

AVAILABLE MODELS

MLX4

TEMPERATURE

-25°F to 240°F (-32°C to 115°C)

MIN/MAX SPEED (rpm)

68 - 600

VISCOSITY

0.2 - 21,000 cP

NOMINAL FLOW RATE

35 - 590 gpm (132 - 2,233 L/min)

MAXIMUM WORKING PRESSURE (MAWP)

250 psi (17.2 bar)

CONNECTION ORIENTATION

Side Inlet | Side Outlet

DIFFERENTIAL PRESSURE

200 psi (13.8 bar)

PRIMARY MATERIALS OF CONSTRUCTION

Ductile Iron

VANE MATERIALS

Laminate
Bronze
Hardened Steel

AVAILABLE CERTIFICATES

Hydrostatic Test
Performance Test
NPSH Test
Material (actual or typical)
Dimensional (pump only or unit)

MLX Nominal Flow Rate Range

CLICK IMAGE TO ENLARGE

Pump Model		L	W	H	Approx. Wt.
MLX	in	22	29-1/4	27-3/8	393 lb
MLX	mm	558.8	739.8	695.3	179 kg

Materials of Construction

Parts	Models	Materials
Casing, Heads, Hubs	MLX Series	Ductile Iron: ASTM 536
Liner	MLX4, MRLX4 MLXW4, MRLXW4	Ductile Iron: ASTM 536 Hardened Ductile Iron: ASTM 536
Discs	MLX4, MRLX4 MLXW4, MRLXW4	Cast Iron: ASTM A48 Hardened Cast Iron: ASTM A48

Pump Options

Options	Details
ORIENTATION OPTIONS	Right Hand: INLET is to the right, when looking from driven side Left Hand: INLET is to the left, when looking from driven side
PORTING OPTIONS	Side Outlet: Outlet 180° inline porting
CONNECTION OPTIONS	4" 150 lb. Flat Face ANSI Compatible, Ductile Iron
MOUNTING OPTIONS	Pump Only Unit: Pump, Motor, Baseplate, Couplings, Guards
SEALING OPTIONS	Blackmer single mechanical seal

Vane Options

	Temperature Limits	Viscosity
STD Laminate	-25°F to 300°F (-32°C to 149°C)	0.2 - 4,250 cP
EC Laminate	-25°F to 300°F (-32°C to 149°C)	0.2 - 8,500 cP
EC Bronze	-25°F to 300°F (-32°C to 149°C)	105 - 21,000 cP
EC Hardened Ductile Iron	-25°F to 300°F (-32°C to 149°C)	105 - 21,000 cP