Product Description
Product Overview
The QHYB-CDL Variable Frequency Constant Pressure Water Supply System is an advanced towerless water supply unit composed of a pump group, control system, and pressure stabilization unit. The system automatically adjusts pump speed to maintain constant pressure, ensuring efficient and energy-saving water delivery. It uses CDLF stainless steel multistage centrifugal pumps for high reliability and efficiency. The device can be configured as air pressure or variable frequency type depending on usage scenarios and is widely used in domestic, fire protection, production, and sprinkler water supply systems.
QHYB-CDL Series Type Designation
Selection Basis
Selection is based on design flow rate and pressure (head) requirements, as well as water usage type:
– Continuous type: Used in hotels, factories, or buildings with constant demand and minimal flow fluctuations.
– Intermittent type: For residential or office buildings with long idle periods and small flow demands.
– Seasonal and regional variations should also be considered when designing the system.
System Advantages
Variable Frequency Type:
– Provides constant pressure water supply with adjustable precision (≤0.02 MPa).
– Energy savings up to 20% compared to air pressure systems.
– Low noise and reduced impact during startup and operation.
Air Pressure Type:
– Lower cost, simple control, and easy maintenance.
– Ideal for constant pressure standby systems, such as firefighting networks.
Selection Guide
1. Recommended Pump Head vs. Supply Height
| Head (m) | 20 | 26 | 32 | 40 | 50 | 60 | 70 | 80 | 100 | 120 |
|---|---|---|---|---|---|---|---|---|---|---|
| Supply Height (m) | 10 | 14 | 18 | 25 | 32 | 38 | 46 | 55 | 72 | 88 |
2. Flow Rate vs. Number of Households
| Flow (m³/h) | 6 | 12 | 18 | 25 | 36 | 50 | 75 | 100 | 150 | 200 |
|---|---|---|---|---|---|---|---|---|---|---|
| Households | 20–30 | 40–60 | 60–100 | 100–150 | 150–200 | 200–300 | 400–500 | 600–1000 | 1000–1500 | 1500–2000 |
Performance Parameters
| Building Type | Spray Intensity (L/m²·min) | Effective Area (m²) | Flow (L/s) | Pressure (MPa) | Height (m) | Recommended Model |
|---|---|---|---|---|---|---|
| Industrial | 10 | 300 | 60 | 0.1 | ≤12 | QHYB60-0.24-125CDL-3 |
| Industrial | 10 | 300 | 60 | 0.1 | ≤50 | QHYB60-0.8-125CDL-3 |
| Storage Building | 15 | 300 | 90 | 0.1 | ≤36 | QHYB90-0.6-150CDL-3 |
| Medium Hazard | 6 | 300 | 40 | 0.1 | ≤72 | QHYB40-1.0-100CDL-3 |
| Low Hazard | 3 | 300 | 15 | 0.1 | ≤100 | QHYB15-1.2-65CDL-3 |
Applications
– Residential and commercial buildings (constant pressure water supply).
– Firefighting and sprinkler systems.
– Industrial water boosting for production facilities.
– Hotels, hospitals, schools, and office complexes.
– Agricultural irrigation and pressure maintenance systems.
System Composition
– Pump Unit: CDLF stainless steel multistage centrifugal pumps configured in 1–4 parallel operation.
– Control Cabinet: Automatic variable frequency control for smart pressure adjustment.
– Pressure Tank: Ensures stable output during small flow or leakage.
– Pipelines and Valves: Stainless steel construction, corrosion-resistant and durable.
Advantages
– Intelligent constant pressure control.
– 20% or more energy saving compared to traditional systems.
– Automatic switching between main and auxiliary pumps.
– Low noise, stable flow, and no water hammer.
– Compact design and easy installation.
– Supports both variable frequency and air pressure supply modes.
OEM & Custom Solutions
Yitie Pump offers OEM and ODM services for complete water supply systems, including customized control configurations, pump models, and material options. Suitable for high-rise buildings, municipal systems, and industrial plants requiring stable and efficient water supply.
FAQs for Oversea Buyers
Q1: What is the QHYB-CDL system used for?
It provides automatic constant pressure water supply for domestic, industrial, and firefighting applications.
Q2: What type of pump does it use?
CDLF stainless steel vertical multistage centrifugal pump.
Q3: What are the main advantages?
Energy efficiency, automatic pressure control, and stable water output.
Q4: Can it be customized for different capacities?
Yes, 1–4 pumps can operate in parallel for larger systems.
Q5: Does it support both air pressure and variable frequency control?
Yes, available in both configurations for different usage scenarios.
Q6: What industries use this system?
Construction, manufacturing, firefighting, municipal, and agricultural sectors.
Q7: Does Yitie Pump offer OEM customization?
Yes, full OEM and ODM customization including design, materials, and automation system.