Cooling Tower Pump

Cooling Tower Pump Solutions for HVAC and Industrial Systems

Overview

A cooling tower circulation pump moves heat from the system to the tower and back. It delivers stable flow and head while keeping energy use in check. The range includes centrifugal units and control packages tailored to duty points, water quality, and site layout.

How It Works

The pump sends warm return water to tower fill, then returns cooled water to heat exchangers. It must overcome static lift and piping friction. Proper NPSH, corrosion‑resistant materials, and correct sizing help prevent cavitation and extend service life.

Selection Criteria

✅Flow: derive from tower tonnage and approach temperature.

✅Head: sum elevation plus friction in pipes, fittings, strainers, and equipment.

✅NPSH: confirm margin at expected operating conditions.

✅Materials: SS304/316 for treated or mildly corrosive water; epoxy‑coated cast iron for standard loops.

✅Mechanical seal: choose faces (SiC/carbon/TC) and elastomers (EPDM/Viton) to match solids, chemistry, and temperature.

✅Control: consider a VFD for part‑load efficiency and lower noise.

Typical Duty Ranges (Reference)

✅Flow/head: ~5–400 m³/h and ~12–200 m head

✅Motor: ~0.75–90 kW, 50/60 Hz, 2‑pole

✅Connections: DIN/ANSI flanges

Final sizing depends on system design and water‑side losses.

Materials and Sealing Options

✅Wetted parts: SS304/316; ductile/cast iron with epoxy; optional bronze impeller

✅Seals: silicon carbide/carbon/tungsten carbide; elastomers EPDM/Viton

✅Configurations: vertical multistage options for compact footprints and service access

Product Options for Tower Circulation

CDLF Stainless Steel Vertical Multistage

Stainless hydraulics offer clean operation and corrosion resistance with steady head across a wide flow range. Ideal for treated water loops in commercial towers and process cooling.

✅SS304/316 wetted parts; efficient multistage design

✅Reference: ~5–240 m³/h, up to ~160 m head

✅Mechanical seal; IE2/IE3 motors, 50/60 Hz

GDL Vertical Multistage Centrifugal

Robust cast‑iron construction with multistage performance achieves higher heads in a compact footprint. Suited to high‑rise HVAC circulation and long pipe runs.

✅High head capability for tall buildings and long circuits

✅Reference: ~10–300 m³/h, up to ~200 m head

✅Flanged connections; low vibration; mechanical seal

Control Options: Single Pump Frequency Conversion Unit

Variable speed, soft start, and protection align output with load. This reduces energy use, water hammer, and noise. Pre‑engineered panels simplify commissioning and integration with building automation.

Key Features

✅Energy efficiency at part load with optimized hydraulics and VFD control

✅Corrosion‑resistant materials matched to tower water chemistry

✅Reliable sealing and bearing support for long duty cycles

✅Compact installation with accessible seal chambers

Technical Specs (Overview)

Configured to the tower duty. Detailed datasheets and curves are available on request.

✅Performance: ~5–400 m³/h, ~12–200 m head; ~0–90°C typical

✅Construction: SS304/316 or epoxy‑coated cast iron; optional bronze impeller; stainless steel shaft

✅Installation and connections: vertical layouts; DIN/ANSI flanges; VFD panels with protection

Applications

✅HVAC towers in offices, malls, hospitals, and data centers

✅Industrial cooling in chemical and petrochemical plants

✅Power generation and general process loops with VFD integration

✅Reclaimed and environmental water systems with appropriate filtration

Customization and Engineering Support

Each circulation package is matched to duty point, materials, sealing, and control needs. ISO9001‑certified processes and a manufacturing base in Wuxing Industrial Zone, Yongjia, Wenzhou support dependable delivery.

Installation, Commissioning, and Service

Guidance and on‑site commissioning help achieve steady operation quickly. After‑sales service supports routine checks and performance verification.

FAQ

How do I size the pump?

Define flow from tower load and approach, calculate total head from static plus friction, verify NPSH margin, and select materials for the water chemistry.

Should I use a VFD?

Variable speed aligns flow with load, lowering energy use and noise while reducing mechanical stress.

Which materials should I choose?

Use SS304/316 for treated or mildly corrosive water; epoxy‑coated cast iron for standard loops. Match seal faces and elastomers to temperature and chemistry.

What maintenance is typical?

Inspect mechanical seals and bearings, clean strainers or side‑stream filters, and compare vibration and performance to baseline curves.

Contact Cooling Tower Pump Supplier

For sizing, datasheets, or a quote, contact our team to discuss your project and site conditions.