Product Overview

The Pentair EQ Series Commercial Plastic Pool Pump 340031 is a high-performance commercial pool pump designed for demanding circulation applications. Built for commercial and large residential pools, the EQ Series delivers strong hydraulic efficiency, reliable operation, and quiet performance in high-flow pool systems.

This model features a 5 HP motor, 208-230/460V three-phase power, and an integrated hair and lint strainer. Its commercial-grade plastic construction helps resist corrosion while keeping the pump lighter and easier to service than many traditional commercial pump designs.

The 340031 is commonly listed as an EQK-500 model with a NEMA premium grade efficiency motor, 6" suction x 4" discharge connections, and 13.5-12.3/6.2 amp electrical rating.

Ideal For

Pool professionals, commercial facilities, and large residential pool owners who need a three-phase commercial pump for high-flow circulation.

Great for use in:

• Commercial swimming pools
• Large residential pools
• Aquatic facilities
• Spas and therapy pools
• Fountains and water features
• High-flow filtration systems
• Pump room upgrades
• Replacement of compatible EQ Series pump installations
• Applications requiring a pump with integrated hair and lint strainer

Key Features

5 HP Commercial Performance

Provides dependable water circulation for commercial and large residential pool systems.

208-230/460V Three-Phase Power

Designed for commercial electrical systems requiring three-phase service.

Built-In Hair and Lint Strainer

Includes an integrated strainer assembly to help capture debris before water reaches the pump.

NEMA Premium Grade Efficiency Motor

Designed with a premium efficiency motor for dependable commercial-duty performance.

Commercial-Grade Plastic Construction

Built with non-corrosive plastic components for durability, corrosion resistance, and long service life in pool environments.

Self-Priming Design

Engineered for reliable priming when installed correctly with proper plumbing and system conditions.

Closed Impeller

Designed with a closed impeller for durability and efficient water movement.

Cam and Ramp See-Through Lid

The clear strainer lid allows quick visual inspection of the basket, while the Cam and Ramp design supports easier service access.

6" x 4" Port Size

This model is commonly listed with 6" suction x 4" discharge connections for high-flow commercial plumbing systems.

Compatible with Commercial System Designs

Three-phase EQ Series pumps are commonly used in advanced commercial pump rooms and may be compatible with properly specified variable frequency drive systems.

Benefits

• Provides powerful circulation for commercial pool systems
• Helps reduce corrosion concerns with non-corrosive plastic construction
• Integrated strainer helps protect the pump from debris
• Premium efficiency motor supports dependable operation
• Clear lid makes basket inspection easier
• Self-priming design supports reliable startup when properly installed
• Designed for quiet and efficient hydraulic performance
• Suitable for large filtration systems and aquatic facilities
• Easier serviceability for pool professionals
• Built by Pentair, a trusted name in commercial pool equipment

Compatibility

This pump is designed for commercial and large residential pool systems requiring a 5 HP, 208-230/460V, three-phase pump with strainer.

Please verify the following before purchase:

• Existing pump horsepower
• Voltage requirement
• Electrical phase
• Full-load amp requirements
• Plumbing size
• Flow requirements
• Pump curve/system design
• Strainer configuration
• Local code requirements
• Whether your application requires a commercial-rated pump

Professional installation is strongly recommended.

Specifications

What’s Included

• Pentair EQ Series 5 HP commercial plastic pool pump
• Integrated hair and lint strainer
• Motor assembly
• Pump housing/volute assembly as supplied by manufacturer

What’s Not Included

• Plumbing unions unless supplied by manufacturer
• External automation controls
• Variable frequency drive
• Electrical wiring
• Installation labor
• Additional fittings or valves
• Replacement plumbing parts

Customer-Facing Q&A

Is this pump for residential or commercial pools?

This pump is designed primarily for commercial pools, but it may also be used on large residential pool systems that require this size and type of pump.

What is the part number?

The Pentair part number is 340031.

What model is this pump?

This pump is commonly listed as model EQK-500.

What horsepower is this pump?

This model is 5 HP.

Is this single phase or three phase?

This model is three phase.

What voltage does this pump require?

This pump is designed for 208-230/460V electrical service.

What is the amp rating?

This model is commonly listed at 13.5-12.3/6.2 amps.

Does this pump include a strainer?

Yes. This model includes an integrated hair and lint strainer.

What is the port size?

This model is commonly listed with 6" suction x 4" discharge connections.

Is this a variable speed pump?

No. This listing is for a single-speed commercial pump. Three-phase systems may be paired with compatible drive/control equipment when properly specified by a qualified professional.

Can I install this myself?

Professional installation is strongly recommended due to the pump size, electrical requirements, plumbing requirements, and commercial application.

Is this a direct replacement for every EQ Series pump?

Not necessarily. Always verify horsepower, voltage, phase, amp rating, port size, plumbing layout, and pump curve before replacing an existing pump.