Cleanroom HVAC and Air Handling Equipment

Cooling-Water Pump Set

A horizontal split-case centrifugal pump engineered for the high flow and moderate head required between chillers and cooling towers.

High-Flow Double-Suction Design
Balanced Axial Loading
Split-Casing Access
Heavy-Duty Bearing Support

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Product Introduction

The cooling-water pump uses a horizontally split cast-iron casing around a double-suction impeller. Water enters both sides of the impeller, reducing axial thrust and supporting large condenser-water flows with stable bearing loads. The upper casing half can be removed to inspect the impeller, wear rings and shaft without separating the lower casing from the main pipework.

Key Features

Double-suction hydraulics divide inlet flow across both impeller eyes and reduce inlet velocity.

A double-volute casing balances radial forces through a broad operating range.

The horizontal split line exposes internal wear components while suction and discharge flanges stay connected.

Independent bearing housings and a rigid base suit continuous cooling-tower circulation duty.

Customer Product Concerns

Condenser-water pumps must carry large flow continuously while tolerating treated water and service interruptions.

High inlet velocity causes cavitation and unstable vibration.Double-suction entry shares flow between two impeller eyes and improves suction behavior.

Large impellers generate high radial and axial bearing loads.Balanced double-volute and double-suction geometry reduces shaft loading.

Inspecting a conventional volute requires cutting connected pipework.The removable upper casing exposes the rotating assembly while lower flanges remain installed.

Cooling-tower water attacks unsuitable internal materials.Coated cast iron, bronze or stainless wear components can be selected for the treatment program.

Typical Applications

Chiller condenser-water circulationCooling-tower distribution headersLarge pharmaceutical utility plantsData-center heat-rejection loopsIndustrial process cooling

Technical Parameters

Representative split-case condenser-water pump construction data are listed below.

Core Material	Split cast-iron casing with bronze or stainless double-suction impeller
Panel Thickness	12-25 mm fabricated steel baseplate thickness
Effective Width	600-1800 mm typical pump-set width
Maximum Length	Up to 4200 mm including motor and coupling
Steel Facing Thickness	2.0-3.0 mm removable coupling guard
Core Density	Approximately 7000-7300 kg/m³ for split cast-iron casing material
Thermal Conductivity	Approximately 45-55 W/(m·K) for cast-iron casing material
Surface Finish	Dark-green epoxy coating with zinc-rich primer on wetted exterior
Joint Type	Horizontally bolted split casing, flanged water ports and flexible shaft coupling
Customization	Available based on the intended application and operating environment.

Available Options

Bronze-fitted or stainless rotating assemblyPacked gland or mechanical sealFixed-speed or variable-speed motorBase-mounted duty-standby packaged pair

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