Product Introduction

Product IntroductionThe VDD (VSD) series is a vertical, multistage, radially split pump available in two structural types: radial guide vanes (VDD type) and diffuser casing with spatial guide vanes (VSD type). Designed and manufactured in accordance with the API 610 12th Edition VS6 standard, this series of pumps features rolling bearings lubricated with oil and a multi-point support structure for submerged sliding bearings. Meticulous consideration and design have been applied to aspects such as support, cooling, installation, and maintenance. Additionally, the pumps can be equipped with various auxiliary and monitoring systems, ensuring high safety and reliability.

In terms of hydraulic performance, the primary and secondary impellers are individually designed. The primary impeller offers high cavitation performance, while the secondary impeller delivers high efficiency. The pump employs either a radial guide vane or a diffuser casing with spatial guide vanes as the discharge chamber, eliminating hydraulic radial forces.

Parameter Range

Design Standard: API 610 12th EditionApplicable Flow Range: 20 m³/h ~ 1000 m³/hApplicable Head Range: Up to 1000 mApplicable Temperature Range: -120°C ~ 180°C

Structural Features of VSD-Type Canned Motor Pump

1. Diffuser casing with spatial guide vanes – Ensures stable hydraulic performance and compact radial dimensions.  

2. Multi-point supported sliding bearing structure – Provides high safety and reliability, with bushings made of high-wear-resistant graphite or composite materials.  

3. Optimized vaporization cavity design – Ensures sealing reliability.  

4. Efficient balancing mechanism – Fully balances axial thrust, ensuring stable rotor operation.