water‑ring vacuum pumps(Second‑Hand)

2BEC42 Liquid Ring Vacuum Pump
Product Overview
Model 2BEC42 is a single‑stage single‑action liquid‑ring vacuum pump, developed as a reliable alternative to imported 2BE4 series pumps. It is widely adopted for vacuum systems of medium‑and‑large‑scale paper‑making lines.

It serves vacuum couch rolls, suction boxes, vacuum press rolls and vacuum paper‑transfer sections of paper machines. The pump can handle process gas mixed with water vapor and trace fiber debris, supporting long‑term continuous stable operation. Equipped with an integrated gas‑water separator, it offers multi‑directional inlet and outlet connections for flexible installation, available in belt‑drive or gear‑box direct‑drive configurations.

Main Structural Features
1. Impeller Assembly
Welded impeller with stamped blades after integral heat treatment. The impeller is shrink‑fitted onto the pump shaft with interference fit, delivering high‑grade dynamic balance performance, capable of coping with fluctuating working loads in paper mills.

2. Adjustable‑clearance Port Plate Assembly
Bearing end cover allows precise adjustment of the clearance between impeller and port plate without full‑unit disassembly. Large inspection access ports are designed on pump casing for convenient inspection of scaling and corrosion, greatly simplifying maintenance work.

3. Material Options
Standard wetted‑parts material is ductile cast iron. For harsh working conditions with corrosive media, optional upgrade materials include stainless steel or high‑alloy castings.

Technical Specifications
Note: Limit vacuum is absolute pressure. Performance data tested at 15 °C working water temperature; pumping capacity varies according to actual operating vacuum level.

Typical Application in Paper Mills
‑ Vacuum dewatering for wire section and press section
‑ Vacuum couch roll & suction box vacuum source
‑ Vacuum paper picking and paper‑transfer system
‑ Also suitable for pulp processing, chemical industry and other coarse‑vacuum working scenarios