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BLW
BLW
Rotary lobe vacuum pump

140 | 185 | 210 | 255 | 270 | 300 | 355 | 400 | 750

BLW 400 PM cover

BLW is a volumetric lobe pump for air particularly suitable for high vacuum.
The two trilobe rotors rotate inside the body with minimal clearances, synchronized by an oil-fitted phase gear. The non-dragging segment seals ensure maximum efficiency and longevity.

Oil free
Water free

BLW ATEX pumps are available on request
II 2/2 G Ex h IIB T3 Gb/Gb
II 2/2 D Ex h IIIC T200°C Db/Db

BLW 400 PM cover

The ultimate rotary lobe vacuum pump

1. Top performance

The BLW line offers an air flow from 800 m3/h up to 4540 m3/h and provides a continuous vacuum of 93%, making the BLW capable of meeting any heavy-duty self-cleaning application.

2. All in one

The BLW integrates five main elements into a single system: a rotary lobe vacuum pump, a 4-way valve for switching between vacuum and pressure, an inlet for air injection and cooling, a check valve, and a non-return valve on the injection flow.

This ultra-compact and ultra-lightweight design offers truck designers maximum flexibility to meet space and weight constraints.

3. Low maintenance costs

The BLW drastically reduces maintenance costs and therefore the environmental impact: no parts subject to wear, no lubrication of the pump chamber, and no water consumption as no water tanks, radiators, and separators are needed.

4. Fresh and quiet

The BLW configuration minimizes heat dissipation and acoustic emissions: this is the result of the design optimization of each element of the system and the overall integrated system that combines such elements.

Focus points
  1. Greasing point on the 4-way valve
  2. Standard non-return valve
  3. Inspection cover
  4. Labyrinth seals with segments and lip seal on the shaft prevent oil leakage
  5. Oversized rotor shafts
  6. Provision for overpressure valve
  7. Continuous operation: air injection cooling system optimized for temperature containment
  8. G1/2'' hole for thermostat
  9. Passage sections designed to minimize pressure losses and heating
Blw focus point img
BLW/P
BLW/P
BLW/PM
BLW/PM
BLW/HC
BLW/HC
BLW/H
BLW/H
Hydraulic rotary cylinder

Hydraulic rotary cylinder

Pneumatic rotary cylinder

Pneumatic rotary cylinder

ATEX pneumatic rotary cylinder

ATEX pneumatic rotary cylinder

Synthetic oil PAO ISO VG 220

Synthetic oil PAO ISO VG 220

1 lt
Aluminum air filter kit

Aluminum air filter kit

ATEX aluminum air filter kit

ATEX aluminum air filter kit

RPM sensor (only for the HC version)

RPM sensor (only for the HC version)

RPM sensor for precise detection of rotational speed
Primary valve in carbon steel

Primary valve in carbon steel

Primary valves are designed to be welded on top of the vacuum truck tank, at the point where the vacuum/pressure line begins. They feature an integrated overflow system with a stainless steel float ball. When the tank reaches the maximum fill level, the valve prevents liquid from entering the vacuum line and reaching the pump.

Additionally, they are equipped with the following accessories: removable cover, threaded coupling for pressure relief/vacuum adjustment valve, pressure gauges, ventilation system, and cyclone valve discharge.

Primary valve in stainless steel

Primary valve in stainless steel

Primary valves are designed to be welded on top of the vacuum truck tank, at the point where the vacuum/pressure line begins. They feature an integrated overflow system with a stainless steel float ball. When the tank reaches the maximum fill level, the valve prevents liquid from entering the vacuum line and reaching the pump.

Additionally, they are equipped with the following accessories: removable cover, threaded coupling for pressure relief/vacuum adjustment valve, pressure gauges, ventilation system, and cyclone valve discharge.

Cyclone valve in carbon steel

Cyclone valve in carbon steel

Cyclone valves are designed to be installed in the vacuum/pressure line between the pump and the tank.

Cyclone valves prevent external liquid or solid parts that could bypass the primary valves from entering the pump.

The cyclone consists of a vertical cylinder with a conical bottom. The flow enters the separator body tangentially through the inlet; the mixture of solids and liquids begins to spin, and the denser materials are separated from the fluid due to this descending flow, as a result of centrifugal force, and can be collected in the lower compartment. As the mixture descends along the cone, a "vortex effect" is created at the center. This process generates a vortex in the center of the cone through which the lighter flow rises.

Cyclone valve in polished stainless steel

Cyclone valve in polished stainless steel

Cyclone valves are designed to be installed in the vacuum/pressure line between the pump and the tank.

Cyclone valves prevent external liquid or solid parts that could bypass the primary valves from entering the pump.

The cyclone consists of a vertical cylinder with a conical bottom. The flow enters the separator body tangentially through the inlet; the mixture of solids and liquids begins to spin, and the denser materials are separated from the fluid due to this descending flow, as a result of centrifugal force, and can be collected in the lower compartment. As the mixture descends along the cone, a "vortex effect" is created at the center. This process generates a vortex in the center of the cone through which the lighter flow rises.

Sliding support silencer

Sliding support silencer

Ø 100 | Ø 165 | Ø 200 | Ø 250 | Ø 300 | Ø 350 | Ø 450

Silencer supports, 2 for each unit.

Code 5090000128: Ø 200 KPS 490 - 550 - 670 / BLW 140
Code 5090000129: Ø 250 KPS 490 - 550 - 670 / KTS 1080 / BLW 140
Code 5090000137: Ø 400 (WSM 3300)
Code 5090000138 Ø 165 (MEC 1000 - 1600 / BALLAST 3500 - 4500 - 6000 - 7500)
Code 5090000139 Ø 187 (BALLAST 3500 - 4500 - 6000 - 7500)

Pulley with pneumatic clutch

Pulley with pneumatic clutch

The Battioni Pagani pulley is a pneumatic clutch assembly with dimensional characteristics and performance particularly suitable for controlling the engagement and disengagement of vacuum pumps, blowers, high-pressure piston water pumps, and centrifuges, installed above the vehicle frame, where the pump and/or blower operation occurs via a belt drive.

The use of clutches on combined vehicles for the emptying of septic tanks and channel washing allows for the engagement and disengagement of vacuum and water pumps without having to stop the rotation of the drive that powers the input pulley, thus ensuring the operator extreme ease of use of the setup and a reduction in passive times.

Thermostat calibrated to 150°C

Thermostat calibrated to 150°C

Thermostat calibrated to 150 °C for temperature control
RPM sensor (only for the HC version)

RPM sensor (only for the HC version)

RPM sensor for precise detection of rotational speed
Polished stainless steel exhaust silencer

Polished stainless steel exhaust silencer

The Battioni Pagani silencer is designed to reduce noise generated by energy pulses at the inlet and outlet of the vacuum pump and must be installed at the discharge line and the suction line. The silencer is designed for air conveyance.

Painted carbon steel exhaust silencer

Painted carbon steel exhaust silencer

Ø 100 | Ø 120

The Battioni Pagani silencer is designed to reduce noise generated by energy pulses at the inlet and outlet of the vacuum pump and must be installed at the discharge line and the suction line. The silencer is designed for air conveyance.

Polished stainless steel intake silencer

Polished stainless steel intake silencer

To be installed on the injection line. It features a protective cap with an integrated perforated sheet metal designed to prevent the entry of potentially harmful particles into the injection line.

Painted carbon steel intake silencer

Painted carbon steel intake silencer

To be installed on the injection line. It features a protective cap with an integrated perforated sheet metal designed to prevent the entry of potentially harmful particles into the injection line.

Painted carbon steel silencer with integrated filter

Painted carbon steel silencer with integrated filter

The Battioni Pagani silencer is designed to reduce noise generated by energy pulses at the inlet and outlet of the vacuum pump and must be installed at the discharge line and the suction line. The silencer is designed for air conveyance.

5.5 MB
Battioni Pagani Revisione Scheda BLW Febbraio2026
Download
36.7 MB
BLW instruction manual
Download

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