DOLPHIN LB 4409 A

Busch DOLPHIN LB 4409 A – liquid ring vacuum pump

The Busch DOLPHIN LB 4409 A is a liquid ring vacuum pump. The nominal pumping speed is 4400 m³/h, the ultimate pressure 33 mbar. Nominal motor rating 90 kW.

Features

• Robust: proven two-stage design
• Reliable: very high vapour and particle tolerance
• Flexible: materials from grey cast iron (EN-GJL-200) through various stainless steels to titanium, ATEX version (cat. 1(i)/2(o) IIC T5), operating liquids other than water, operation as a compressor possible

Typical applications

Busch lists: Biogas handling (circulation); Chemistry (packaging, filtration, degassing, distillation, solvent recovery and others); Confectionery (other coatings, pneumatic conveying, moulding and forming and others); Dairy products (cheese production – vacuum chambers for cheese, cheese production – pneumatic conveying, cheese production – cheese towers and others); Fish farming (fish meal impregnation); Food processing (pneumatic conveying of wet food waste, meat tumblers and marinators, powder processing and others); Metallurgy (steel degassing); Oil and gas (crude oil distillation, flare gas recovery, vapour recovery and others); Packaging (liquid packaging); Pharmaceuticals and biotechnology (distillation, solvent recovery, filtration, degassing, evaporation, drying and others); Plastics processing (pyrolysis); Power generation (condenser air extraction); Waste water treatment (aeration process); Woodworking (impregnation, drying).

Accessories and versions

• Open or closed liquid circuit
• Liquid separator
• Cavitation protection
• Heat exchanger
• Gas ejector
• Wide choice of motors
• Non-return valves
• Vacuum relief valves
• ATEX – for safe operation in potentially explosive atmospheres

Advice and service

Ehrler & Beck advises on selection, accessories and service.

Pumping speed 50Hz	4,400
Pumping speed 60Hz	4,400
Ultimate pressure	33
Rated motor power 50Hz	90
Rated motor power 60Hz	90
Weight	2,340
Length	215
Width	95
Height	141
Inlet connection flange	DN 200 PN 10
Outlet connection flange	DN 200 PN 10
Noise level	85 dB(A)
Cooling method	Water cooling
Oil type	Oil-free

Convert units: vacuum and pressure units · Nm³/h to m³/h

Additional technical data