Variable Frequency Constant Pressure Water Pump
This water pump maintains constant pressure by varying motor speed according to water demand, optimizing energy use. It is engineered with a stainless steel pump body and advanced control technology for reliable performance.



Technical Specifications
Product Overview
Variable Frequency Constant Pressure Water Pump
This advanced horizontal multistage centrifugal pump utilizes permanent magnet synchronous motor technology to maintain constant water pressure. By dynamically adjusting motor speed based on real-time consumption, the system achieves ultra-high energy efficiency and significantly lower power usage. Designed for reliability and longevity, it features high-quality stainless steel construction and advanced drive technology for a maintenance-free experience.

Technical Specifications
Materials & Construction
- Stainless steel pump body
- Stainless steel impeller
- 304 stainless steel shaft
- Silicon carbide-graphite mechanical seal
- IIR material diaphragm
- Core Features
- Permanent Magnet Synchronous MotorNon-inductive FOC Vector DriveIntegrated Pressure TankWater Hammer ProtectionLCD Control InterfaceZero Maintenance
Performance Data
Performance Matrix
| Model | Power (W) | Max Flow (m3) | Max Head (m) |
|---|---|---|---|
| APH203 | 800 | 5.1 | 40 |
| APH204 | 1,000 | 5.6 | 56 |
| APH403 | 1,000 | 6.5 | 40 |



