2BV Series Liquid Ring Vacuum Pump - Technical Specifications, Applications & FAQs

The 2BV series liquid ring vacuum pump is a new generation energy-saving product suitable for chemical, pharmaceutical, and food processing industries. This article details its technical parameters, advantages, applications, and 10 FAQs to help users select the optimal vacuum solution..

The 2BV series liquid ring vacuum pumps feature direct-coupled design and cavitation protection, making them ideal replacements for SK/2SK series pumps. This article provides detailed specifications, application cases, and FAQs covering 50Hz/60Hz model selection, corrosion-resistant options, and more.

Introduction:

2BV series liquid ring vacuum pump is suitable for suction gas and vapour ,and the suction pressure can reach 33mbar (abs.)(i.e.97% vacuum degree ).When the liquid ring vacuum pump works under the condition that the suction pressure is near the limited vacuum (saturated pressure of the operating liquid )for a long time ,it should couple with the cavitation protection pipe in order to protect the pump .When it’s used as a compressor ,the maximum pressure is 0.26mpa（abs).As a new generation of energy-saving product ,2BV series liquid ring vacuum pump will replace the SK and 2SK series liquid ring vacuum pumps and W,WY,WL series reciprocating vacuum pumps completely with their superior performance and advantages .

2BV6 series liquid ring vacuum pumps and compressors are mainly used for pumping the explosive gas or working in the flammable and explosive environment .The technical parameter of each type is the same as the corresponding type of the 2BV2and 2BV5 series products .

Advantages:

1、The direct-coupled design is easy installation and can save space.
2、The pump has the cavitation protection port opens (or connects with the separator )in the case of ensure maximum suction effect to eliminate the noise of cavitation and protect the pump
3、2BV whole series are all use the aluminum bronze impeller with high strength and raise its corrosion resistance and durability .If the liquid flows parts adopt stainless steel ,the pump can work in the more hard condition .

Application:

Pulp & paper industry : black liquid evaporation,vacuum dehydrator,degassing system of raw materials and white water, suction tank,couch roll, absorption-shift roll and transmission roll, Anti-wind box.

Chemical industry:  methane gas recovery,petroleum recycle, gas collection, exhaust compression, vapor collection, filtration and deceration, polyester Production, PVC Production.
Power plant: condenser exhausting,water box priming,flue gas desulfurization, fly ash conveying,geothermal gas removal,Vacuum Pressure impregnation for transformers.
Sugar industry:  Sewage filtering, CO2 production etc

Technical Specification:

Water Ring Vacuum Pump – Durable and Efficient Vacuum Solution for Industrial Applications
Water ring vacuum pumps are designed for efficient and reliable operation in environments that require handling wet, vapor-laden, or corrosive gases. Their water-sealed mechanism ensures durability and high performance in various industrial sectors.

Key Features:

· 

o Water-sealed mechanism: Provides consistent and reliable vacuum operation.

o Handles wet and vapor-laden gases: Ideal for moisture-rich environments.

o Corrosion resistance: Suitable for applications involving aggressive or corrosive gases.

o Energy efficiency: Reduces operational costs for businesses.

o Low maintenance design: Ensures long service life and minimal downtime.

Applications:

o Chemical industries: For vapor recovery and moisture handling.

o Power generation: Vacuum systems for turbines and condensers.

o Food and beverage production: Clean vacuum systems for hygienic processes.

o Pulp and paper industries: Moisture control and water recovery systems.

o Environmental applications: Gas handling in wastewater treatment plants.

The image should depict the pump in an industrial setting, such as a chemical plant, power station, or food production facility. Include key features like its water-sealed operation, durable construction, and efficient gas handling capabilities with clear labels.

Product Introduction: 2BV Series Liquid Ring Vacuum Pump

The 2BV series liquid ring vacuum pump is a new generation energy-saving product designed for gas and vapor suction, with ultimate vacuum reaching 33mbar(abs.). When operating near ultimate vacuum for extended periods, a cavitation protection pipe should be installed. As a compressor, it can achieve maximum pressure of 0.26MPa(abs.). With superior performance, the 2BV series completely replaces SK/2SK series pumps and W/WY/WL reciprocating vacuum pumps.

Key Advantages

Direct-Coupled Design - Easy installation and space saving

Cavitation Protection Port - Ensures maximum suction while eliminating cavitation noise

Aluminum Bronze Impeller - High strength and corrosion resistance, with optional stainless steel wetted parts

Explosion-Proof Design - 2BV6 series suitable for flammable/explosive environments

Application Cases

Case 1: Paper Industry - Black Liquor Evaporation System

A large pulp mill replaced SK-1.5 pumps with 2BV5110 for black liquor evaporation:

18% energy reduction

Maintenance interval extended from 3 to 6 months

Vacuum stability improved to ±2mbar

Case 2: Chemical Plant - Methane Recovery System

2BV6110 stainless steel model performance:

Excellent H2S corrosion resistance

8,000+ hours continuous operation

22% higher recovery efficiency

Case 3: Pharmaceutical Plant - Freeze Dryer Application

2BV2070 features for freeze dryer systems:

GMP compliant clean design

30% energy saving with VFD control

Noise level below 75dB(A)

TX2BV6-110 Series Industrial Water Ring Vacuum Pump FAQs

1. How to choose between 50Hz and 60Hz models?

A: Select based on local grid frequency. 60Hz models have ~20% higher speed/flow but require more power.

2. What corrosion-resistant options are available?

A: Standard aluminum bronze impeller, with optional 316L stainless steel wetted parts or PTFE coating.

3. Is cavitation protection pipe mandatory?

A: Recommended when working pressure <80mbar, extends pump life 3-5 times.

4. Maximum allowable working liquid temperature?

A: Standard design for 40°C. High-temperature applications require custom cooling.

5. When to replace mechanical seals?

A: Replace when:

Leakage >5ml/h

Visible shaft sleeve wear

Abnormal current fluctuations

6. Can it handle particle-laden media?

A: Requires pre-filter. Particle content should be <50mg/m³ with size <50μm.

7. Is VFD control recommended?

A: Yes for variable loads, saves 25-40% energy.

8. Maintenance schedule?

A: Typical intervals:

Lubricant change every 2,000 hours

Bearing inspection every 5,000 hours

Annual overhaul

9. Precautions when series-connected with Roots pump?

A: Ensure:

Base pump capacity ≥1/3 of Roots pump

Install overpressure valve

Add interstage condenser

10. Available food-grade certifications?

A: Options include:

FDA-compliant seals

3-A sanitary standards

EHEDG certification

Conclusion

The 2BV series liquid ring vacuum pumps deliver energy efficiency and reliable performance for chemical, pharmaceutical, and food industries. Proper selection and maintenance can significantly improve system efficiency and service life. For technical specifications or custom solutions, please contact our engineering team.