• Suction Capacity: 1,150 to 18,900 ACFM (1,950 to 32,100 m3/h)
  • Vacuum Range: to 4 inHgA (to 135 mbar abs.)

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Liquid Ring Vacuum Pump Large Capacity, 2BE4

The NASH 2BE4 liquid ring vacuum pump and compressor series have been optimized to deliver a 6-8% efficiency improvement over previous 2BE models. Based on the proven reliable flat sided liquid ring vacuum pump design the 2BE4 has a polyisoprene lined body, flexible inlet and discharge connections, and a large inspection port for improved performance and reliability. With capacity ranging from 1,150 to 18,900 ACFM (1,950 to 32,100 m³/h), the 2BE4 is well matched to demanding environments like the paper, power, mining, and chemical process industries.

Reliable and Efficient with Proven Performance

The 2BE4 liquid ring vacuum pump and compressor series is an upgrade to the proven 2BE3 model and has been engineered to deliver improved performance, reliability, and efficiency over the previous models. Compared to previous models the 2BE4 offers efficiency improvements up to 8% and has reduced maintenance requirements.

Split Vacuum Capability

The 2BE4 pumps allow efficient operation over the entire vacuum range without the need to change the pump’s internals. When equipped with a center shroud, split vacuum operation up to 12 inHg (400 millibar) differential can be achieved. The advantage of this is significant because it allows the use of fewer vacuum pumps–which saves space and installation costs.

Robust and low maintenance based on proven flat sided 2BE design

Patented in Germany in the early 1900’s, Nash’s flat sided liquid ring vacuum pump / compressor design has been providing thousands of facilities across the globe with proven performance, reliability, and peace of mind. With constant innovation, our patented design features:
  • Port plates with variable porting so pump performance is optimized across the entire operating range.
  • Large differential pressure capability
  • High liquid carryover tolerance
  • Large inspection ports allow for easy internal inspections
  • Orifice to drain pump completely when shut down

Operates as a vacuum pump and compressor with a discharge pressure range of 36 psia (2.5 bar abs.)

Some applications require vacuum and compression in one process. Instead of handling the gas with two separate machines, our liquid ring vacuum pump and compressor models can do the job with only one pump – reducing cost and simplifying installation.

Flexible Installation & Quiet Operation

The unique inlet configuration allows for both top and side inlet arrangements to accommodate low headroom installations. In installations where space is limited, the top discharge capability of the NASH 2BE4 allows the use of a top mounted discharge separator that saves floor space and eliminates the need for a trench. 2BE4 pumps are amazingly quiet during operation. Sound levels of 72 to 85 dB(A) (measured at a distance of 3.3 ft (1 meter) from the source) have been recorded for even the largest of the pump models.

Designed to operate in demanding environments

Designed to operate in demanding environments like the paper, power, mining, sugar, and chemical process industries, these pumps offer durability and reliability at a low cost of operation. The standard polyisoprene lining on the pump body resists aggressive process gases and liquids to provide exceptional corrosion resistance. The polyisoprene lining also consumes less energy than the equivalent unlined pump. For added corrosion resistance, stainless steel internal components are available in certain models.

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