Product Overview
The QHYB-ISG Domestic Variable Frequency Automatic Water Supply System (equipped with ISG vertical inline pump) is a tankless, integrated water supply solution. The system consists of a pump unit, automatic control system, and pressure boosting and stabilization devices, providing reliable and efficient water supply under various demand conditions. The system adjusts the pump speed automatically to maintain constant pressure, ensuring energy-saving and high-efficiency water supply.
Model Designation
Key Features
-
Integrated Tankless Design
A tankless integrated structure eliminates the need for additional water tanks, saving space and simplifying installation, while enhancing system integration. -
Flexible Operation Modes
Supports both air pressure and variable frequency operation modes, providing flexible options to meet different flow and pressure requirements, adaptable to various application scenarios. -
Parallel Pump Configuration
Supports the operation of 1 to 4 pumps in parallel, configured as needed, to effectively address varying flow and head requirements. -
Improved Efficiency Under Low Demand
Delivers high-efficiency operation under low demand conditions by alternating between auxiliary small flow pumps and the main pump, further reducing energy consumption. -
High Reliability and Low Maintenance
Optimized design ensures stable operation, reduces maintenance frequency, extends equipment lifespan, and lowers operational costs.
Engineering Overview
The water supply capacity of the system is determined by the pump unit configuration, with coordination managed by the automatic control system. The pressure stabilization device stores hydraulic energy and maintains pipeline pressure, compensating for low water consumption and normal pipeline leakage. When water demand increases and pipeline pressure drops, the pump will automatically start to restore system pressure, ensuring stable and reliable water supply.
Typical Applications
The QHYB-ISG automatic water supply system is widely used in:
-
Domestic and Residential Water Supply Systems: Provides stable water supply to residential and commercial buildings.
-
Fire-Fighting and Sprinkler Water Supply Systems: Ensures reliable water pressure for fire protection systems.
-
Industrial Water Supply Systems: Suitable for industries requiring a stable water supply.
-
Irrigation and Sprinkler Systems: Used for agricultural irrigation and landscape watering.
This system supports both continuous demand applications (e.g., large hotels, restaurants, industrial facilities) and intermittent demand applications (e.g., office buildings, commercial and residential complexes), and considers seasonal and regional variations in water usage.
System Configuration
Pump Components:
-
Pump Unit: Main pump with optional auxiliary pressure pump.
-
Automatic Control System: Intelligent variable frequency control system for precise pressure adjustment.
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Pressure Boosting and Stabilization Device: Ensures stable water pressure in the system.
-
Integrated Pipelines and Enclosed System Components: Ensures the efficient operation of the system and simplifies installation.
Technical Specifications
Operating Conditions
System selection should be based on the following engineering parameters:
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Design Flow Rate: Based on the specific needs of the application.
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Required Supply Pressure (Head): Based on application requirements.
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Water Circulation Type: Continuous or intermittent operation.
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Flow Variation Over Time: Consider fluctuations in flow during different periods.
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Seasonal and Regional Water Demand Characteristics: Adapt to seasonal variations and regional water usage.
For fire-fighting sprinkler systems, it is recommended to use the air pressure water supply configuration, which maintains long-term pressure control without significant flow variation. The auxiliary small flow pump compensates for pipeline leakage without starting the main pump, thus saving energy.
Service Conditions
Regular inspection of the pump unit, control system, pressure stabilization device, pipelines, and valves is necessary to ensure the system operates efficiently and safely.
Protection Features
The QHYB-ISG system is equipped with overcurrent protection, temperature monitoring, and liquid level protection systems, ensuring the system can stop operation in abnormal conditions to prevent equipment damage.
Selection Standards
When selecting the system, factors such as the required flow rate, head pressure, water circulation type, and seasonal and regional variations in water demand should be considered to ensure the most suitable configuration:
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Continuous Type: Suitable for applications with continuous demand and minimal flow variation, such as large hotels, restaurants, and industrial facilities.
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Intermittent Type: Suitable for applications with low and variable flow demands, such as office buildings and mixed-use commercial residential buildings.
Specifications & Installation
Selection Guide
I. Pump Selection for Variable Frequency Constant-Pressure Water Supply Systems
| 1. Selection Based on Equipment Head | ||||||||||
|
Equipment 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. Selection Based on Number of Households Served | ||||||
|
Flow Rate (m³/h)
|
6
|
12
|
18
|
25
|
36
|
50
|
|
Households Served
|
20–30
|
40–60
|
60–100
|
100–150
|
150–200
|
200–300
|
|
Flow Rate (m³/h)
|
75
|
100
|
150
|
200
|
250
|
|
Households Served
|
400–500
|
600–1000
|
1000–1500
|
1500–2000
|
2000–3000
|
Performance Parameters
|
Applicable Buildings
|
Sprinkler Flow (L/s)
|
Sprinkler Operating Pressure (MPa)
|
Applicable Building Height (m)
|
Recommended Water Supply System Model (Vertical Pump Set)
|
||
|
Building Type
|
Design Sprinkler Density (L/(min·m²))
|
Coverage Area (m²)
|
||||
|
Industrial Building
|
10
|
300
|
60
|
0.1
|
≤12
|
QHYB60-0.24-100ISG-3
|
|
Industrial Building
|
10
|
300
|
60
|
0.1
|
≤24
|
QHYB60-0.4-100ISG-3
|
|
Industrial Building
|
10
|
300
|
60
|
0.1
|
≤36
|
QHYB60-0.6-100ISG-3
|
|
Industrial Building
|
10
|
300
|
60
|
0.1
|
≤50
|
QHYB60-0.8-100ISG-3
|
|
Industrial Building
|
10
|
300
|
60
|
0.1
|
≤72
|
QHYB60-1.0-100ISG-3
|
|
Industrial Building
|
10
|
300
|
60
|
0.1
|
≤100
|
QHYB60-1.2-100ISG-3
|
|
Storage Building
|
15
|
300
|
90
|
0.1
|
≤12
|
QHYB90-0.24-150ISG-3
|
|
Storage Building
|
15
|
300
|
90
|
0.1
|
≤24
|
QHYB90-0.4-150ISG-3
|
|
Storage Building
|
15
|
300
|
90
|
0.1
|
≤36
|
QHYB90-0.6-150ISG-3
|
|
Storage Building
|
15
|
300
|
90
|
0.1
|
≤50
|
QHYB90-0.8-150ISG-3
|
|
Storage Building
|
15
|
300
|
90
|
0.1
|
≤72
|
QHYB90-1.0-150ISG-3
|
|
Storage Building
|
15
|
300
|
90
|
0.1
|
≤100
|
QHYB90-1.2-150ISG-3
|
|
Ordinary Hazard
|
6
|
300
|
40
|
0.1
|
≤12
|
QHYB40-0.24-100ISG-3
|
|
Ordinary Hazard
|
6
|
300
|
40
|
0.1
|
≤24
|
QHYB40-0.4-100ISG-3
|
|
Ordinary Hazard
|
6
|
300
|
40
|
0.1
|
≤36
|
QHYB40-0.6-100ISG-3
|
|
Ordinary Hazard
|
6
|
300
|
40
|
0.1
|
≤50
|
QHYB40-0.8-100ISG-3
|
|
Ordinary Hazard
|
6
|
300
|
40
|
0.1
|
≤72
|
QHYB40-1.0-100ISG-3
|
|
Ordinary Hazard
|
6
|
300
|
40
|
0.1
|
≤100
|
QHYB40-1.2-100ISG-3
|
|
Light Hazard
|
3
|
300
|
15
|
0.1
|
≤12
|
QHYB15-0.24-65ISG-3
|
|
Light Hazard
|
3
|
300
|
15
|
0.1
|
≤24
|
QHYB15-0.4-65ISG-3
|
|
Light Hazard
|
3
|
300
|
15
|
0.1
|
≤36
|
QHYB15-0.6-65ISG-3
|
|
Light Hazard
|
3
|
300
|
15
|
0.1
|
≤50
|
QHYB15-0.8-65ISG-3
|
|
Light Hazard
|
3
|
300
|
15
|
0.1
|
≤72
|
QHYB15-1.0-65ISG-3
|
|
Light Hazard
|
3
|
300
|
15
|
0.1
|
≤100
|
QHYB15-1.2-65ISG-3
|
| Users can select the appropriate model according to the parameters provided. | ||||||
OEM & Custom
We offer OEM/ODM customization for system configuration, pump selection, voltage (220V/380V/415V), and control options. Optional stainless steel manifolds, touchscreen HMI, and remote monitoring modules are available. All systems are ISO9001 and CE certified for export applications.
FAQs
- Q: What’s the advantage of QHYB-ISG?
A: It provides constant pressure, stable operation, and high energy efficiency using ISG inline pumps. - Q: What’s the pressure control accuracy?
A: ±0.02 MPa under frequency regulation. - Q: Can it be used for firefighting?
A: Yes, available in combined domestic/firefighting configurations. - Q: What’s the difference between air-pressure and variable frequency types?
A: Variable frequency is more precise and energy-efficient; air-pressure is more economical and easier to maintain. - Q: Do you provide OEM service?
A: Yes, we offer private labeling, control system customization, and export packaging. - Q: Which markets use this product?
A: Exported to Southeast Asia, Middle East, and South America for residential and municipal systems.