2BV Series Water-ring Vacuum Pump

2BV water-ring vacuum pumps are new economic products developed jointly by our company and other scientific research institution and, with its excellent performances and numerous merits, could replace equivalent SK and 2SK water-ring vacuum pumps as well as W, WY and WL reciprocating vacuum pumps.

2BV water-ring vacuum pumps are widely used in petroleum, chemical, pharmaceutical, food, sugar industry etc. In respect of its isothermal air compression, there are fewer explosive risks when compressing and pumping flammable and explosive gases, so it is more preferred.

Structure and Characteristics
1.Direct-link of machine and pump, less space, easy installation.
2.Standard configuration of mechanical seal avoiding leak, easy maintenance.
3.Stable running, low noise = 62dB.
4.Unique flexible vent hole avoiding over-compression and ensuring optimum efficiency within working range.
5.All 2BV products are equipped with cavitation protection pipe joint which can be opened under ultimate pressure to ensure air suction, eliminate cavitation noise and protect the pump to the most extent.
6.All parts and components are precisely machined by CNC lathes and equipped with nationwide high-quality mechanical seals.

Model Specification

Selection Example
1. Air suction volume of design parameter: V=100m3/h, air suction pressure: P=40mbar.
2. Other parameters subject to standard conditions (see the note) and the curve closest to ①
3. This example is 71V, and the product type can be checked according to the curve No. (order No., only for standard type), for instance, 70V stands for a type 2BV-B071.

Note: The performance curve is under the following conditions: suction medium of saturated air at 20℃, temperature of working fluid at 15℃, displacement pressure of 1013mbar. The allowable variance of performance is ±10%. The left side of the picture shows the performance curve of air ejector pump provided. 

Performance Diagram

Product Show

Note:
① The performances in the  table refers to air temperature at 20 ℃, atmospheric pressure at 1013.25hpa (760 mmHg), relative humidity of air at 70% and temperature of circulating water at 15℃.
② Tolerance of air pumping rate at ± 10%.
③ The readings of the degree of vacuum in the table refer to the pressure below standard atmospheric pressure. (1 mmHg = 1 Torr = 133.3 Pa, 0.1 Mpa = 750 mmHg)