The WLW type oil-free (corrosion-resistant) vertical reciprocating vacuum pump is an upgraded product of the W type horizontal vacuum pump and is the primary equipment for obtaining rough vacuum. Due to the adoption of a fully sealed device, complete isolation between the crankshaft and cylinder is achieved; combined with the use of self-lubricating materials for the piston rings, advanced oil-free lubrication is realized. Since there is no sewage discharge, this type of vacuum pump is particularly suitable for processes such as vacuum distillation, vacuum evaporation, vacuum drying, vacuum concentration, and vacuum impregnation in industries like chemical, pharmaceutical, and food. 

Main Features
(1) Low power consumption, significant energy-saving effect;
(2) Small footprint, low operating noise:
(3) Cylinder adopts forced water cooling, excellent cooling effect;
(4) Advanced sealing structure eliminates phenomena such as oil splashing outward;
(5) Due to the reasonable structure and uniform force distribution of moving parts, long service life is ensured;
(6) When the cylinder is made of stainless steel or lined with Teflon, it can resist corrosion from acids, alkalis, and organic solvents.

Performance and Specifications

Installation Dimension Diagram

P-S Curve Diagram