Product Overview

The Pentair C Series CMK-75 Commercial Bronze Pump 347942 is a heavy-duty commercial pump designed for demanding pool, spa, and water circulation applications. Built with a durable bronze construction, this pump is made for installations where strength, corrosion resistance, and long-term reliability are essential.

With a 7.5 HP three-phase motor, 200/208V operation, and 22.3 amp rating, the CMK-75 is suitable for large commercial pools, spas, aquatic facilities, and other high-flow systems that require dependable circulation performance.

The Pentair C Series is commonly used in commercial environments where rugged materials, serviceability, and consistent hydraulic performance are important. This model is a strong choice for replacement projects, facility upgrades, and new commercial equipment installations.

Ideal For

The Pentair 347942 CMK-75 pump is ideal for:

• Commercial swimming pools
• Commercial spas and therapy pools
• Aquatic facilities
• Hotel, HOA, apartment, and facility pools
• High-demand circulation systems
• Large water features
• Replacement commercial pump installations
• Applications requiring bronze pump construction
• Systems requiring three-phase electrical service

Key Features

7.5 HP Commercial Pump Performance

The 7.5 HP motor provides strong pumping power for commercial pool and spa circulation systems with higher flow requirements.

Bronze Pump Construction

Bronze construction provides added durability and corrosion resistance for demanding commercial pool and spa environments.

Three-Phase Motor

Designed for three-phase electrical service, making it suitable for many commercial equipment rooms and high-capacity installations.

200/208V Operation

This pump is designed for 200/208V electrical systems and should be wired by a qualified professional according to local code and manufacturer requirements.

60 Hz Frequency

Built for standard 60 Hz operation in compatible electrical systems.

22.3 Amp Rating

The motor is rated at 22.3 amps, helping installers and electricians confirm proper electrical sizing and system compatibility.

Commercial C Series Design

The Pentair C Series is built for heavy-duty applications where reliable circulation, durable construction, and professional serviceability are required.

High-Demand Water Circulation

Suitable for commercial pool systems, spas, aquatic facilities, and other applications that require dependable water movement.

Benefits

The Pentair C Series CMK-75 Commercial Bronze Pump gives commercial pool operators and service professionals a durable, high-capacity pump solution for demanding circulation systems. Its 7.5 HP output helps support strong water movement for larger pools, spas, and facility systems.

The bronze construction provides added durability for heavy-use environments, while the three-phase motor is well suited for commercial electrical systems. For replacement or new installations, the CMK-75 offers a dependable Pentair pump option built for long-term commercial performance.

Specifications

Important Installation Notes

This pump should be installed by a qualified pool professional or licensed electrician. Proper voltage, phase, amperage, overload protection, bonding, grounding, breaker sizing, plumbing, priming, and local code compliance are required for safe and reliable operation.

This model is designed for three-phase electrical service. Always confirm site voltage, motor wiring configuration, pump curve requirements, plumbing size, flow rate, system head pressure, and equipment compatibility before ordering or installation.

For replacement installations, confirm the existing pump model, horsepower, voltage, phase, port size, hydraulic performance, and equipment layout before selecting this pump.

Customer-Facing Q&A

Q: How much horsepower is this pump?
A: This Pentair C Series CMK-75 pump is rated at 7.5 HP.

Q: What voltage does this pump use?
A: This model is designed for 200/208V operation.

Q: Is this single-phase or three-phase?
A: This is a three-phase pump.

Q: What is the amp rating?
A: This pump is rated at 22.3 amps.

Q: What is the pump made from?
A: This model features bronze construction, making it suitable for demanding commercial applications.

Q: Is this pump for residential pools?
A: This pump is primarily intended for commercial and high-demand systems. It may be used only where properly sized and where the electrical and hydraulic requirements match the installation.

Q: Can this replace any 7.5 HP pump?
A: No. Replacement compatibility depends on voltage, phase, amperage, plumbing size, pump curve, flow requirements, and system design.

Q: Does this pump require professional installation?
A: Yes. Commercial pump installation should be performed by a qualified pool professional or licensed electrician.