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 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
Performance and Specifications
AVAILABLE MODELS
- MLX4
VISCOSITY
- 0.2 - 21,000 cP
CONNECTION ORIENTATION
- Side Inlet | Side Outlet
TEMPERATURE
- -25°F to 240°F (-32°C to 115°C)
NOMINAL FLOW RATE RANGE
- 35 - 590 gpm (132 - 2,233 L/min)
DIFFERENTIAL PRESSURE
- 200 psi (13.8 bar)
MAXIMUM WORKING PRESSURE (MAWP)
- 250 psi (17.2 bar)
AVAILABLE CERTIFICATES
- Hydrostatic Test
- Performance Test
- NPSH Test
- Material (actual or typical)
- Dimensional (pump only or unit)
PRIMARY MATERIALS OF CONSTRUCTION
- Ductile Iron
VANE MATERIALS
- Laminate
- Bronze
- Hardened Steel
MIN/MAX SPEED (rpm)
- 68 - 600
Dimensions
| Pump Model | L | W | H | Approx. Wt. | |
|---|---|---|---|---|---|
| MLX | in | 22 | 29-1/4 | 27-3/8 | 393 lb |
| 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 |
Elastomer Options
| Temperature Limits | |
|---|---|
| FKM | -15°F to 300°F (-26°C to 149°C) |
| PTFE - SS Spring | -0°F to 300°F (-18°C to 149°C) |
Maintenance Kits
| Model(s) | Description | Part Number |
|---|---|---|
| MLX4B, MLXW4B | Kit - Maintenance | 898982 |
| MLX4B | Kit - Rebuild | 899082 |