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Blackmer  |  SKU: MLN4B/5/40/G0/0/0/2/N/0/0/0/X/0
$ 1,975.00 off

ML Series Sliding Vane Pumps

$ 17,775.00 $ 19,750.00
Size or Model
Seal
Jacketed Heads

ML Series Sliding Vane Pumps - MLN4B / G0 - PTFE Impregnated Packing (Std) / None (Std) is backordered and will ship as soon as it is back in stock.

Delivery and Shipping

We ship in stock items same day. If it needs to be ordered we will ship it out to you the day it arrives.

If you have any questions you can reach us at (262) 646.4500 or click here

Description

The ML Series is Blackmer's Heavy Duty ductile-iron sliding vane pump line, built for sustained performance across everything from thin non-lubricating solvents to highly viscous liquids and abrasive slurries. A removable hub gives quick access to the bearing and sealing areas for routine inspection without pulling the entire pump head, and the pump can be configured with the right combination of bearing, seal, and vane material for chemicals, petroleum, paint and coatings, pulp and paper, and food-processing service.

Two Engineered Platforms in One Series

ML Series pumps are available in two bearing and sealing configurations to match your application. MLX and MLXW models use internal mechanical seals with external grease-lubricated ball bearings, isolated from the pumped liquid to maximize bearing life, and can be fitted with a wide selection of Blackmer mechanical seals. MLN models use internal self-lubricating carbon sleeve bearings with PTFE-impregnated shaft packing and an external stuffing box that accepts most standard aftermarket mechanical seal configurations. MLXW is the extra-clearance, hardened-liner version of MLX for more abrasive service.

  • 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 available
  • Symmetrical bearing support assures even loading and wear for long life
  • Adjustable relief valve protects the pump against excessive pressures
  • Sliding-vane design self-adjusts for wear to maintain flow rates, with excellent self-priming and dry-run capability
  • Easy maintenance: vanes can be replaced without removing the pump from the piping system
  • Fully integrated unit assemblies (motor, gearbox, baseplate, couplings, and guards) available as a pre-engineered drop-in package, see Unit Assemblies below

Available Models

Model Platform Nominal Flow Rate Max Differential Pressure Starting Price Shipping Weight
MLN4B MLN (sleeve bearing / packing) 35 - 590 gpm (132 - 2,233 L/min) 200 psi (13.8 bar) $18,268.75 385 lb (175 kg)
MRLN4B MLN (sleeve bearing / packing) 35 - 590 gpm (132 - 2,233 L/min) 200 psi (13.8 bar) $18,268.75 385 lb (175 kg)
MLX4B MLX (ball bearing / mechanical seal) 35 - 590 gpm (132 - 2,233 L/min) 200 psi (13.8 bar) $19,730.25 393 lb (178 kg)
MRLX4B MLX (ball bearing / mechanical seal) 35 - 590 gpm (132 - 2,233 L/min) 200 psi (13.8 bar) $19,730.25 393 lb (178 kg)
MLXW4B MLXW (extra-clearance, hardened liner) 35 - 590 gpm (132 - 2,233 L/min) 200 psi (13.8 bar) $22,274.00 393 lb (178 kg)
MRLXW4B MLXW (extra-clearance, hardened liner) 35 - 590 gpm (132 - 2,233 L/min) 200 psi (13.8 bar) $22,274.00 393 lb (178 kg)

Starting prices shown are for the standard seal (G0 on MLN models, S0 on MLX/MLXW models), no relief valve, and no jacketed heads. Select Model, Seal, and Jacketed Heads above to see the price for your configuration. MLN pumps handle temperatures to 400°F (204°C) and viscosities to 108,000 cP; MLX/MLXW pumps handle temperatures to 240°F (115°C) and viscosities to 21,000 cP.

Materials of Construction

Parts Models Material
Casing, Heads, Hubs All ML Series Ductile Iron: ASTM 536
Liner MLX4B, MRLX4B Ductile Iron: ASTM 536
Liner MLXW4B, MRLXW4B Hardened Ductile Iron: ASTM 536
Liner MLN4B, MRLN4B Ductile Iron: ASTM 536
Discs MLX4B, MRLX4B, MLXW4B, MRLXW4B Cast Iron: ASTM A48 (Hardened Cast Iron available)
Discs MLN4B, MRLN4B Cast Iron: ASTM A48

Dimensions (Pump Only)

Model L W H Approx. Weight (pump only)
MLX4B, MRLX4B, MLXW4B, MRLXW4B 22 in 29-1/4 in 27-3/8 in 393 lb (178 kg)
MLN4B, MRLN4B 22-1/4 in 29-3/8 in 27-3/8 in 385 lb (173 kg)

Configuration Options (call to order)

The options below are not selectable online. To configure any of these for your order, call (262) 646-4500.

Option Values Notes
Vanes Laminate, full size (Std, code 5, no charge); Laminate, extra clearance (code 6, no charge); Hard Ductile Iron, extra clearance (code B, no charge); Bronze, extra clearance (code 8, +$256 on any model) Call to specify the vane material for your application.
Relief Valve No Relief Valve (Std, code 0, no charge); Bolt-on Relief Valve (code 1, +$2,375 on any model) Prices shown include no relief valve. Call to add one.
Relief Valve Spring 45 - 75 psi, 76 - 125 psi, or 126 - 200 psi (all no charge, relief valve required) Call to specify your required pressure range.
O-Rings Fluorocarbon / FKM (Std, code 2, no charge); PTFE (code 3, +$779 on any model) Call to specify for your chemical compatibility needs.
Bushings (MLN4B, MRLN4B only) Carbon (Std, no charge); Bronze (no charge) MLX4B, MRLX4B, MLXW4B, and MRLXW4B use external roller bearings, standard, no bushing choice.
Connections Integral 4" ANSI-compatible, 150# flat face flange, standard on all models Per Blackmer's current price sheet.

Unit Assemblies (Optional Drive Packages)

Blackmer also offers fully integrated unit assemblies for the ML Series: an SK 62-W gear reducer, base, couplings, and coupling guards, ready to receive a motor and pump (motor and pump priced separately). These are available in drive ratios from 2.97:1 up to 11.6:1 to match your ML pump model and desired output speed, across motor frames 254T/256T through 364T/365T. Call (262) 646-4500 for your exact combination including motor and pump.

Assembly Applicable Models Includes Starting Price (add to pump and motor price)
SK 62-W Unit Assembly (10 drive ratios, 2.97:1 to 11.6:1) MLX4, MRLX4, MLXW4, MRLXW4, MLN4, MRLN4 Base, gear reducer, couplings, and coupling guards, ready to receive pump and motor $23,370

See the Nord Gearbox Ratings spec sheet and Integrated Unit Assemblies brochure under Literature below for the full ratio and motor-frame tables.

Maintenance Kits

Model(s) Description Part Number
MLX4B, MLXW4B Maintenance Kit 898982
MLX4B Rebuild Kit 899082
MLN4B Rebuild Kit 899118
MLN4B Maintenance Kit 899218
MLN4B Rebuild Kit, Triple Lip Cartridge Seal (K7) 899106

MRLN4B, MRLX4B, and MRLXW4B share the same pump construction as their non-R counterparts above; call (262) 646-4500 to confirm the correct kit part number for your specific model.

Literature

Questions about a configuration not shown here, or about the optional gear reducer and unit assemblies? Call (262) 646-4500.

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Frequently Asked Questions

What are the main features of the ML Series Sliding Vane Pumps that make them suitable for various applications?
The ML Series Sliding Vane Pumps feature a modular design with options like removable hubs for easy inspection, self-adjusting vanes, and a ductile iron construction suitable for a range of liquids, including abrasives and high-temperature fluids. They are also available with different bearing and sealing configurations to match specific chemical and industrial needs.
How does maintenance for the ML Series Sliding Vane Pumps simplify routine inspections and vane replacement?
Maintenance for the ML Series Sliding Vane Pumps is designed for ease, with vanes that can be replaced without removing the pump from the piping system, and a removable hub that provides quick access to critical areas like bearings and seals during routine inspections.
In what ways can the ML Series Sliding Vane Pumps be configured for handling abrasive slurries or high-temperature fluids?
The ML Series pumps can be configured with optional wear-hardened parts for abrasive slurry applications and jacketed pump heads for high-temperature operation, ensuring durability and performance in challenging conditions. Call to specify these configurations during order.
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