Vertical Multistage Pumps for High Rise HVAC

Vertical Multistage Pumps for High Rise HVAC | Engineered for Pressure & Space by EKG (Malaysia) Sdn Bhd

Delivering Pressure Where It's Needed, Efficiently and Reliably
In high-rise buildings, generating sufficient water pressure for upper-floor HVAC systems is a fundamental challenge. Vertical multistage pumps are the engineered solution, combining multiple impellers on a single shaft to build high head (pressure) in a compact, vertical footprint ideal for mechanical room constraints. EKG (Malaysia) Sdn Bhd specializes in the design, supply, and integration of these critical pumps, ensuring reliable chilled water, condenser water, and domestic water pressure for Malaysia's tallest towers.

Why Vertical Multistage Pumps Are Ideal for High-Rise HVAC

• High Head in Minimal Space: The vertical stack design generates significant pressure without the long horizontal footprint of equivalent end-suction pumps.

• Energy Efficiency: Each stage adds pressure incrementally, allowing the pump to be finely matched to the system's required head, often operating closer to its Best Efficiency Point (BEP).

• Simplified Piping: Suction and discharge are typically in-line, simplifying pipework in crowded mechanical rooms.

• Quiet Operation: Generally lower vibration and noise levels due to balanced axial forces and vertical orientation.

• Built for Continuous Duty: Industrial-grade construction for 24/7 operation in critical building services.

Primary High-Rise HVAC Applications

1. Chilled Water Boosting: Boosting pressure from the main chiller plant to serve AHUs and FCUs on the highest floors.

2. Condenser Water Boosting: Overcoming static head to deliver condenser water to cooling towers located on the roof.

3. Domestic Water Booster Systems: Providing potable water pressure to upper floors (often as part of a dedicated package).

4. Secondary Loop Circulation: Serving as the distribution pump in primary-secondary systems for vertical zoning.

Our High-Rise Vertical Pump Solutions

1. Hydraulic System Design & Pump Specification:

   • Precise calculation of total dynamic head (static height + pipe friction + equipment pressure drop).

   • Selection of the correct number of stages, material (standard cast iron or stainless steel for condenser water), and motor size.

2. Supply of Engineered Pump Systems:

   • Provision of complete pump sets, including the vertical multistage pump, high-efficiency motor (IE3/IE4), baseplate, and coupling.

   • Optional integration with Variable Frequency Drives (VFDs) and control panels for pressure setpoint control and energy savings.

3. Professional Installation & Commissioning:

   • Critical alignment and grouting on a solid foundation.

   • Proper support of the vertical column and connection to piping.

   • Commissioning under load to verify performance against the system curve.

4. Preventive Maintenance & Service:

   • Specialized maintenance protocols for vertical pumps, including periodic checking of sleeve bearings, shaft alignment, and stage wear.

   • Rapid response service to minimize downtime for critical pressure-boosting functions.

Key Technical Considerations for High-Rise Design

• NPSH (Net Positive Suction Head) Availability: Ensuring the pump receives adequate inlet pressure to prevent cavitation at the first stage.

• Thrust Management: Understanding how axial hydraulic thrust is balanced or managed by the pump design.

• Material Selection for Malaysian Conditions: Specifying appropriate materials for water treatment chemicals used in open (cooling tower) or closed loops.

• Redundancy Strategy: Designing systems with duty/standby pumps or multiple smaller units to ensure continuous operation.

The EKG High-Rise Expertise

• Understanding of Vertical Hydraulics: We engineer solutions for the unique pressure gradients of tall buildings.

• Integration with Overall MEP Design: We ensure the pump interfaces correctly with pressure-reducing valves, expansion tanks, and building automation systems.

• Lifecycle Cost Focus: We prioritize energy-efficient models and designs that minimize long-term maintenance complexity.

• Project Coordination: Experience working with main contractors to fit installation into tight high-rise construction schedules.

Build Up with Confidence
Ensure your high-rise project has the robust, efficient pumping infrastructure it needs from the ground up.

Contact EKG (Malaysia) Sdn Bhd's engineering team during the design phase or for a retrofit consultation on your high-rise vertical pump requirements.