The XBD-CDL series vertical multistage fire pressure stabilizing pump is purpose-built for fire water supply and pressure maintenance systems. Featuring a proven hydraulic model with a multistage centrifugal design, it delivers high head pressure in a compact vertical footprint — ideal for maintaining stable pressure in fire protection networks across commercial, industrial, and residential buildings.
Key Performance Parameters
| Flow Rate (Q) | 1 – 40 L/s |
| Head Pressure (H) | 30 – 220 m |
| Power (P) | 0.75 – 160 kW |
| Speed (n) | 2,900 / 2,850 r/min |
Operating Conditions
- Media: clean water or non-corrosive liquids with similar physical and chemical properties; solid content ≤ 0.1%
- Medium temperature: -15 °C to 80 °C
- Ambient temperature: ≤ 40 °C, relative humidity < 95%
Product Features
Compact Vertical Multistage Design
The pump features a vertical, segmented multistage construction with inlet and outlet flanges aligned on the same horizontal axis and matching port sizes, making pipeline connection straightforward and installation remarkably convenient.
Reliable Sealing System
Equipped with a mechanical shaft seal that eliminates leakage, prevents shaft wear, and maintains a clean operating environment — a critical advantage for fire systems that may sit idle for extended periods.
Corrosion-Resistant Construction
Impellers and rotating friction components are manufactured from alloy materials, resisting corrosion and rust. This prevents rust-colored water from contaminating fire sprinkler systems and extends overall pump service life.
Balanced Axial Force
Hydraulic balancing manages axial thrust, with a guide bearing at the pump lower end. The shaft connects to the motor shaft via a clamp-type coupling, enclosed within a stainless-steel outer cylinder for durability.
GB 6245 Compliant
Designed and tested according to GB 6245 fire pump performance requirements, ensuring consistent, reliable performance for continuous fire water supply and pressure maintenance duties.
Installation & Start-Up
Installation Guidelines
- Pipeline weight must not be borne by the pump body
- Anchor bolts must be securely tightened; periodic checks prevent loosening and vibration during operation
- Inspect pump flow passages for foreign objects (stones, iron particles) before installation
- Install regulating valves on inlet/outlet lines and pressure gauges near connections; add a check valve before the outlet gate valve on high-head installations to prevent water hammer
- For suction applications, fit a foot valve and ensure inlet piping has minimal bends with no leaks or air ingress
Start-Up Procedure
- Manually rotate the motor to confirm free, unobstructed impeller movement
- Open the inlet valve and vent valve to fill the pump chamber, then close the vent valve
- Manually rotate several times to allow lubricating water to reach the mechanical seal face
- Jog the motor to verify correct rotation direction (counter-clockwise from motor end for CDL type)
- Full open inlet, close discharge, power on, then gradually open discharge valve to desired operating point
Typical Applications
- Building fire water supply systems
- Fire network pressure boosting and stabilization
- High-rise building water supply boosting
- Long-distance water transfer
- Heating and HVAC system circulation
- Boiler hot/cold water circulation
- Industrial and municipal water supply
Maintenance Essentials
Keep inlet piping tightly sealed against leaks and air ingress. Avoid prolonged operation under cavitation conditions or at excessive flow rates that overload the motor. Monitor motor current regularly to ensure operation within design parameters. Schedule annual inspections to check bearings and replace worn components as needed.
Why Choose Chaodun XBD-CDL Fire Pressure Stabilizing Pumps
Fire protection systems demand unwavering reliability — and the XBD-CDL series delivers. With its vertical multistage architecture, corrosion-resistant alloy construction, and GB 6245-compliant performance, this pump maintains stable fire network pressure day after day. The mechanical seal design eliminates leakage concerns during standby periods, while the compact footprint fits easily into equipment rooms where space is at a premium. From high-rise buildings to industrial complexes, Chaodun’s XBD-CDL series provides dependable pressure stabilization that fire safety engineers trust.