2BV Single stage liquid ring vacuum pump with flange or threaded suction and exhaust port

Compact, single-stage liquid-ring vacuum pump designed for reliable handling of gases and vapours in industrial processes. The unit accepts flange or threaded connections for suction and discharge and delivers a deep vacuum down to 33 mbar (≈97% vacuum). When operated close to the saturated pressure of the operating liquid, a cavitation protection line (or separator connection) is recommended to prevent cavitation, reduce noise and protect the pump. The pump can also operate as a compressor with a maximum discharge pressure of 0.26 MPa.

Key features

• Single-stage liquid-ring design for continuous, oil-free vacuum service
• Flange or threaded suction and exhaust ports for flexible piping installation
• Achieves suction pressures as low as 33 mbar (≈97% vacuum)
• Can be used as a compressor up to 0.26 MPa
• Direct-coupled configuration for compact footprint and easier installation
• Cavitation protection port (or separator interface) to maintain performance near saturation and reduce cavitation noise
• Bronze impeller as standard for strength and corrosion resistance; stainless-steel wetted parts available for aggressive process fluids
• 2BV6 variants designed for handling explosive gases or use in flammable/ explosive environments (same basic performance as 2BV2 / 2BV5 types)

Typical applications

• Pulp & paper: vacuum dewatering, evaporators, suction tanks, couch rolls and anti-wind boxes
• Chemical and petrochemical: vapor recovery, gas collection, exhaust compression, filtration and degassing, polyester and PVC processes
• Power generation: condenser exhausting, priming, flue gas desulfurization support, transformer vacuum pressure impregnation
• Sugar and food processing: CO2 production, wastewater filtration and degassing

Options & installation notes

• Select flange or threaded ports to match plant piping
• Specify stainless-steel wetted components where corrosion resistance is critical
• Install cavitation protection or a separator when operating near liquid saturation pressure to protect the pump and reduce cavitation-induced noise
• Direct-coupled drive recommended where space-saving and simple alignment are priorities

This unit is suitable for industrial buyers seeking a robust, energy-efficient liquid-ring vacuum pump for gas and vapour handling with options for corrosive fluids and explosive-gas-rated variants.