W-HY Automatic Fire Booster Unit – Intelligent Pressure Control System

W-HY Automatic Fire Booster Unit – Intelligent Pressure Control System

W/HY Automatic Fire Booster Unit (Intelligent Pressure) | Smart constant-pressure boosting for fire water networks

  • Intelligent pressure control: Maintains stable set pressure under variable demand.
  • Multi-pump coordination: Automatic staging/alternation to match duty and balance runtime.
  • Integrated fire package: Pump set + control panel + valves/instrument points for system integration.
  • Duty/standby reliability: Redundancy options with alarm/status interfaces for fire-network management.
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Product Overview

W-HY Automatic Fire Booster Unit is an intelligent fire pressure stabilizing and boosting system designed to maintain constant pipeline pressure in automatic fire protection networks.

It compensates for pressure fluctuations and leakage loss to ensure immediate fire system response readiness.

It is applied in sprinkler systems, hydrant systems, and building fire pipeline networks requiring continuous pressure stabilization.

✔ For fire protection systems requiring automatic pressure stabilization and standby readiness under fluctuating pipeline pressure conditions

Model Designation

W-HY Automatic Fire Booster Unit – Intelligent Pressure Control System

Applications

  • Closed-loop sprinkler systems with micro-leakage pressure drop
  • High-rise building hydrant standby pressure systems
  • Fire pipeline networks with long-distance pressure loss
  • Facilities requiring automatic pressure compensation during standby
  • Combined fire pump room pressure maintenance configuration

Engineering Advantages

  • Integrated booster pump, pressure tank, and intelligent control system
  • Automatic pressure sensing and start-stop logic control
  • Small-flow compensation design preventing frequent fire pump activation
  • Pressure tank buffering improves system stability
  • Modular skid-mounted configuration simplifies installation
✔ Engineered to maintain stable fire pipeline pressure and prevent unnecessary main fire pump activation under standby conditions.

System Components

W-HY Fire Pressure Unit — Main Parts：

  • Booster pump (vertical multistage type)
  • Pressure tank
  • Pressure transmitter
  • Intelligent fire control cabinet
  • Check valve and isolation valves
  • Base frame and piping assembly

Technical Parameters

Service Conditions

Designed for fire standby pressure stabilization duty in fixed fire protection systems.

Operating Conditions

Flow rate:  m³/h
Head:    m
Power range:   kW
Speed:  rpm
Liquid temperature: ≤  
Working pressure: ≤

Detailed parameter tables are provided below.

Installation & Dimensions

Installation Diagram

W*/*-HY Automatic Fire Booster Unit Structure DiagramPerformance Data

No. Name
1 Diaphragm pressure tank
2 Pressure gauge
3 Check valve
No. Name
4 Rubber expansion joint
5 Pump
6 Pump
Tank model Φ (mm) H (mm) A (mm) A1 (mm) L (mm) L1 (mm)
Φ800 800 2480 800 760 1400 1200
Φ1000 1000 2800 1000 960 1600 1400
Φ1200 1200 3210 1200 1160 1800 1600

Performance Parameters

Item No. Pressure Booster Model Firefighting Pressure MPa P1 Vertical Diaphragm Air Tank Matching Pump “Operating Weight (kg)” Operating Pressure (MPa) “Pressure Stabilizing Water Volume (L)”
Model Specifications Working Pressure Ratio Firefighting Water Capacity (L) Model
Rated Capacity Actual Volume
1 ZW(L)-I-X-7 0.1 SQL800*0.6 0.60 300 319 25LG3-10*4 1.5KW 1452
P1=0.10 Ps1=0.26
P2=0.23 Ps2=0.31
 54
2 ZW(L)-I-Z-10 0.16 SQL800*0.6 0.80 150 159 25LG3-10*4 1.5KW 1428
P1=0.16 Ps1=0.26
P2=0.23 Ps2=0.31
 70
3 ZW(L)-I-X-10 0.16 SQL800*0.6 0.60 300 319 25LG3-10*5 1.5KW 1474
P1=0.16 Ps1=0.36
P2=0.33 Ps2=0.42
 52
4 ZW(L)-I-X-13 0.22 SQL1000*0.6 0.76 300 329 25LG3-10*4 1.5KW 2312
P1=0.22 Ps1=0.35
P2=0.32 Ps2=0.40
 97
5 ZW(L)-XZ-10 0.16 SQL1000*0.6 0.65 450 480 25LG3-10*4 1.5KW 2312
P1=0.16 Ps1=0.33
P2=0.30 Ps2=0.38
 86
6 ZW(L)-XZ-13 0.22 SQL1000*0.6 0.67 450 452 25LG3-10*5 1.5KW 2312
P1=0.22 Ps1=0.41
P2=0.38 Ps2=0.46
 80
7 ZW(L)-II-Z- A 0.22-0.38 SQL800*0.6 0.80 150 159 25LG3-10*6 2.2KW 1452
P1=0.38 Ps1=0.53
P2=0.50 Ps2=0.60
 61
8 ZW(L)-II-Z- B 0.38-0.50 SQL800*1.0 0.80 150 159 25LG3-10*8 2.2KW 1513
P1=0.50 Ps1=0.68
P2=0.65 Ps2=0.75
 51
9 ZW(L)-II-Z- C 0.50-0.65 SQL1000*1.6 0.85 150 206 25LG3-10*9 2.2KW 1653
P1=0.65 Ps1=0.81
P2=0.78 Ps2=0.86
 59
10 ZW(L)-II-Z- D 0.65-0.85 SQL1000*1.6 0.85 150 206 25LG3-10*11 3KW 1701
P1=0.85 Ps1=1.04
P2=1.02 Ps2=1.10
 57
11 ZW(L)-II-Z- E 0.85-1.00 SQL1000*1.6 0.85 150 206 25LG3-10*13 4KW 1709
P1=1.00 Ps1=1.21
P2=1.19 Ps2=1.27
 50
Item No. Pressure Booster Model Firefighting Pressure MPa P1 Vertical Diaphragm Air Tank Matching Pump “Operating Weight (kg)” Operating Pressure (MPa) “Pressure Stabilizing Water Volume (L)”
Model Specifications Working Pressure Ratio Firefighting Water Capacity (L) Model
Rated Capacity Actual Volume
12 ZW(L)-II-X- A 0.22-0.38 SQL1000*0.6 0.78 300 302 25LG3-10*6 2.2KW 2344
P1=0.38 Ps1=0.55
P2=0.52 Ps2=0.60
 72
13 ZW(L)-II-X- B 0.38-0.50 SQL1000*1.0 0.78 300 302 25LG3-10*8 2.2KW 2494
P1=0.50 Ps1=0.70
P2=0.67 Ps2=0.75
 61
14 ZW(L)-II-X- C 0.50-0.65 SQL1000*1.6 0.78 300 302 25LG3-10*10 3KW 2689
P1=0.65 Ps1=0.88
P2=0.86 Ps2=0.93
 51
15 ZW(L)-II-X- D 0.65-0.85 SQL1000*1.6 0.85 300 355 25LG3-10*13 4KW 2703
P1=0.85 Ps1=1.05
P2=1.02 Ps2=1.10
 82
16 ZW(L)-II-X- E 0.85-1.00 SQL1000*1.6 0.88 300 355 25LG3-10*15 4KW 2730
P1=1.00 Ps1=1.21
P2=1.19 Ps2=1.26
 73
17 ZW(L)-II-XZ- A 0.22-0.38 SQL1200*0.6 0.80 450 474 25LG3-10*6 2.2KW 3641
P1=0.38 Ps1=0.53
P2=0.50 Ps2=0.58
 133
18 ZW(L)-II-XZ- B 0.38-0.50 SQL1200*1.0 0.80 450 474 25LG3-10*8 2.2KW 3947
P1=0.50 Ps1=0.68
P2=0.65 Ps2=0.73
 110
19 ZW(L)-II-XZ- C 0.50-0.65 SQL1200*1.6 0.80 450 474 25LG3-10*10 3KW 3961
P1=0.65 Ps1=0.87
P2=0.84 Ps2=0.92
 90
20 ZW(L)-II-XZ- D 0.65-0.85 SQL1200*1.6 0.80 450 474 25LG3-10*12 4KW 4124
P1=0.85 Ps1=1.12
P2=1.09 Ps2=1.17
 73
21 ZW(L)-II-XZ- E 0.85-1.00 SQL1200*1.6 0.80 450 474 25LG3-10*14 4KW 4156
P1=1.00 Ps1=1.30
P2=1.27 Ps2=1.35
 64
Notes:
  1. The symbols for operating pressure in the table:
    P1 – Air pressure in the water tank (required firefighting pressure) (MPa)
    P2 – Fire pump starting pressure (MPa)
    Ps1 – Pressure at which the booster pressure-maintaining pump starts (MPa)
    Ps2 – Pressure at which the booster pressure-maintaining pump stops (MPa)
  2. Items 1-6 in the table correspond to Type I “equipment”, which is typically installed in high-level water tank areas (where the hydrant is lower than the “equipment”).
  3. Items 7-21 in the table correspond to Type II “equipment”, which is generally installed in fire pump rooms or water storage tank areas. The fire pressure range and selection of pumps can be customized based on specific requirements.
  4. The pump models in the table refer to the standard models from Chaodun factory. Depending on the flow rate and head requirements, other pump models can be selected.

How to Select a Pump Model

  • Determine system standby pressure and allowable pressure fluctuation range
  • Calculate compensation flow based on leakage and testing discharge
  • Select pressure tank volume according to system buffer requirement
  • Verify control cabinet compatibility with fire alarm system
  • Confirm pipeline rated pressure does not exceed unit working limit
✔ Selection must be based on standby pressure setpoint, leakage compensation flow, and system buffering requirements.

Engineering Notes

  • Pressure switch or transmitter calibration affects system stability
  • Tank pre-charge pressure must match system static pressure
  • Booster pump duty should remain within small-flow compensation range
  • Avoid oversizing to prevent excessive pressure fluctuation

Compliance & Quality Assurance

  • Factory pressure holding test for tank assembly
  • Hydraulic performance test of booster pump
  • Control cabinet functional test
  • Electrical insulation resistance test
  • Optional third-party inspection

Safety Notice

  • Do not operate under dry-running condition
  • Ensure correct pressure setting before commissioning
  • Disconnect power before maintenance
  • Avoid exceeding rated working pressure

OEM & Customization

This pump series supports engineered configuration and duty-based matching. Technical adjustments can be made according to system requirements and installation conditions.

Available options include:
• Motor voltage & frequency
• Pressure tank volume selection
• Control cabinet configuration
• Wetted parts material selection
• Surface coating and corrosion protection

Configuration is determined based on duty point and project specifications.

FAQs

Q: Can the booster unit operate under VFD control?
A: Yes, variable frequency configuration can be provided for precise pressure control.

Q: What is the allowable working pressure?
A: Maximum allowable working pressure is 1.6 MPa.

Q: How is pressure stabilization achieved?
A: Through automatic pressure sensing and small-flow pump compensation logic.

Q: Can the system prevent frequent main fire pump activation?
A: Yes, the unit compensates minor pressure loss to avoid unnecessary fire pump start.

Q: What type of pump is typically used in the unit?
A: Vertical multistage centrifugal pump is commonly used.

Q: Is the pressure tank mandatory?
A: Yes, it provides pressure buffering and reduces frequent pump cycling.

Q: What liquid temperature is allowable?
A: Maximum allowable liquid temperature is 80°C.