Franklin Electric HC Series Close-Coupled Centrifugal Pump

What Is the Franklin Electric HC Series Close Coupled Centrifugal Pump?

The Franklin Electric HC Series Close Coupled Centrifugal Pump is a heavy-duty, high-capacity water pump designed for the most demanding commercial, industrial, and municipal pumping applications. Available at Ken’s Distributing, the HC Series is built around a ductile iron volute and a CA6NM stainless steel impeller, making it one of the most rugged and high-performing close coupled centrifugal pumps in the entire Franklin Electric lineup.

What sets the Franklin Electric HC Series Close Coupled Centrifugal Pump apart is its combination of raw power, advanced hydraulics, and thoughtful serviceability features. Running at 3600 RPM with motor options up to 50 HP, the HC Series delivers superior flow rates and pressure output for large-scale pumping operations. At the same time, features like jack-out holes, a replaceable shaft sleeve, bronze wear-rings, and a back pullout volute design make this pump surprisingly practical to service and maintain despite its heavy-duty capabilities.

Kendisco carries the full Franklin Electric HC Series lineup in single-phase and three-phase configurations, with both ODP and TEFC motor enclosure options available. Whether you are specifying a pump for irrigation, commercial water distribution, mining operations, or municipal water infrastructure, the HC Series has the power and durability to deliver.

Why Choose the HC Series Over Other Close Coupled Centrifugal Pumps?

Franklin Electric offers several close coupled centrifugal pump series, but the HC Series is specifically designed for applications where standard pumps fall short. Here is what makes the Franklin Electric HC Series Close Coupled Centrifugal Pump the right choice for more demanding jobs:

• Ductile Iron Construction: Unlike standard cast iron, ductile iron provides significantly higher tensile strength and impact resistance. This means the HC Series can handle higher pressures, tougher water conditions, and more abusive operating environments without the risk of cracking or failure that standard cast iron pumps face.
• CA6NM Stainless Steel Impeller: CA6NM is a high-strength martensitic stainless steel alloy that offers superior corrosion resistance and mechanical strength compared to standard cast iron or 304 stainless steel impellers. This is a critical advantage in applications with abrasive or corrosive water conditions.
• Low NPSH Performance: The HC Series is optimized for low Net Positive Suction Head requirements, meaning it can handle applications where the available suction pressure is limited, such as pumping from ponds, rivers, or shallow reservoirs.
• 3600 RPM Motor Speed: Running at 3600 RPM compared to the 1800 RPM of other Franklin Electric close coupled models like the XS Series, the HC Series delivers higher flow and pressure output from a more compact pump size.
• Motor Options Up to 50 HP: The HC Series supports motors up to 50 HP, making it suitable for large-scale pumping operations that require significant power and flow output.
• Silicon Carbide Mechanical Seal Option: The mechanical seal option with silicon carbide faces and FKM elastomers provides exceptional durability and chemical resistance, far surpassing standard carbon and ceramic seals in tough applications.

If your application involves large volumes of water, higher pressures, abrasive water conditions, or sustained continuous duty operation, the HC Series is the pump to consider. Contact Ken’s Distributing to discuss your specific requirements and our team will help you configure the right HC Series setup.

Key Features and Benefits of the Franklin Electric HC Series Close Coupled Centrifugal Pump

• Heavy-Duty Ductile Iron Volute: The back pullout ductile iron volute body can be rotated during installation to position the discharge in the most convenient direction for your piping layout. Ductile iron provides superior strength and impact resistance compared to standard cast iron.
• Enclosed CA6NM Stainless Steel Impeller: The enclosed impeller is hydraulically balanced to reduce radial bearing loads for smoother operation, longer bearing life, and more consistent efficiency. CA6NM stainless steel provides excellent corrosion and erosion resistance.
• Low NPSH Optimization: The impeller and hydraulic design are optimized for low NPSH requirements, allowing the pump to operate reliably in applications with limited available suction pressure.
• Flexible Seal Options: Choose between a packed box with lantern ring seal for applications where some controlled leakage is acceptable, or a high-performance mechanical seal with silicon carbide faces and FKM elastomers for leak-free operation in demanding or chemically aggressive environments.
• Standard 3600 RPM JP Frame Motors: Standard models use JP frame motors at 3600 RPM with options up to 50 HP. Larger sizes use custom shaft JP frames. Available in ODP or TEFC enclosures to match different installation environments.
• Vertical or Horizontal Mounting: The HC Series can be installed in vertical or horizontal orientation to match system layout requirements and available installation space.
• Replaceable Shaft Sleeve: Protects the pump shaft from wear and can be replaced without replacing the entire shaft, reducing long-term maintenance costs.
• Bronze Wear-Rings: Replaceable bronze wear-rings maintain pump efficiency over time and are easy to service when normal wear occurs.
• Jack-Out Holes: Built into the volute casing for quick and easy disassembly without special tools, making maintenance and inspection faster and more practical.
• Two-Piece Stainless Steel Packing Gland: Simplifies seal area servicing and provides corrosion-resistant durability throughout the service life of the pump.
• Back Pullout Design: The rotating element of the pump, including the impeller, shaft, and seal assembly, can be removed from the back of the casing without disconnecting suction or discharge piping.

Technical Specifications

Specification	Detail
Available HP	7.5 HP (standard JP frame models up to 50 HP)
Phase Options	Single-Phase and Three-Phase available
Voltage (Single-Phase)	230 VAC
Voltage (Three-Phase)	230 VAC / 460 VAC
Motor Speed	3600 RPM
Motor Frame	Standard JP Frame (larger sizes use custom shaft JP frame)
Motor Enclosure Options	ODP (Open Drip Proof) or TEFC (Totally Enclosed Fan Cooled)
Pump Design	Close Coupled, Back Pullout
Volute Material	Heavy-Duty Ductile Iron
Impeller Material	CA6NM Stainless Steel, Enclosed, Hydraulically Balanced
Seal Options	Packed Box with Lantern Ring or Mechanical Seal (Silicon Carbide/FKM)
Wear-Rings	Replaceable Bronze
Shaft Sleeve	Replaceable
Packing Gland	Two-Piece Stainless Steel
Mounting Options	Vertical or Horizontal
Discharge Connection	Flanged (FLG)

Order Information

HC 2 x 3 – 7.5 FLG MECH. SEAL 3600 RPM

HC 2.5 x 4 – 7.5 FLG MECH. SEAL 3600 RPM

HC 3 x 4 – 7.5 FLG MECH. SEAL 3600 RPM

HC 3 x 4 – 7.5 FLG PACK. SEAL 3600 RPM

HC 4 x 4 – 7.5 FLG MECH. SEAL 3600 RPM

HC 4 x 4 – 7.5 FLG PACK. SEAL 3600 RPM

HC 4 x 5 – 7.5 FLG MECH. SEAL 3600 RPM

HC 4 x 5 – 7.5 FLG PACK. SEAL 3600 RPM

HCL 6 x 4 – 10 FLG MECH. SEAL 1800 RPM

HC 2 x 3 – 10 FLG MECH. SEAL 3600 RPM

HC 2.5 x 4 – 10 FLG MECH. SEAL 3600 RPM

HC 3 x 4 – 10 FLG MECH. SEAL 3600 RPM

HC 3 x 4 – 10 FLG PACK. SEAL 3600 RPM

HC 6 x 4 – 10 FLG MECH. SEAL 3600 RPM

HC 6 x 4 – 10 FLG PACK. SEAL 3600 RPM

HC 6 x 8 – 10 FLG MECH. SEAL 1800 RPM

HC 6 x 8 – 10 FLG PACK. SEAL 1800 RPM

HC 6 x 8 – 10L FLG MECH. SEAL 1800 RPM

HC 6 x 8 – 10L FLG PACK. SEAL 1800 RPM

HCL 6 x 4 – 10 FLG MECH. SEAL 1800 RPM

HC Series vs. Other Franklin Electric Close Coupled Centrifugal Pumps

Franklin Electric offers several close coupled centrifugal pump series, and each one is designed for a different level of demand and application. Here is how the Franklin Electric HC Series Close Coupled Centrifugal Pump compares to the other popular series in the lineup:

Feature	HC Series	XS Series	D Series	AG Series
Volute Material	Ductile Iron	Cast Iron	Cast Iron	Cast Iron
Impeller Material	CA6NM Stainless Steel	Cast Iron	Cast Iron	Cast Iron
Motor Speed	3600 RPM	1800 RPM	Varies by model	Varies by model
Max HP Available	Up to 50 HP	Up to 10 HP	Varies	Varies
Mechanical Seal Type	Silicon Carbide / FKM	Carbon/Ceramic / Nitrile	Carbon/Ceramic / Nitrile	Carbon/Ceramic / Nitrile
Wear-Rings	Bronze, replaceable	Not specified	Not specified	Not specified
Best For	High-demand commercial, industrial, mining, municipal	Irrigation, commercial, construction	General purpose water transfer	Agricultural irrigation and farm use

The HC Series is clearly the premium option in the Franklin Electric close coupled centrifugal pump lineup, with ductile iron construction, a CA6NM stainless steel impeller, silicon carbide seal options, and motor capability up to 50 HP. For less demanding applications, the XS, D, or AG Series may be a more cost-effective fit. Not sure which series is right for your project? Contact Ken’s Distributing and our team will walk you through the options.

Applications: Where Is the Franklin Electric HC Series Close Coupled Centrifugal Pump Used?

The Franklin Electric HC Series Close Coupled Centrifugal Pump is built for heavy-duty applications where standard close coupled pumps may not deliver the required performance or durability. Here are the most common uses:

• Large-Scale Irrigation Systems: The high flow output and low NPSH performance of the HC Series make it an excellent choice for large agricultural and commercial irrigation systems that draw water from ponds, rivers, or reservoirs.
• Commercial Water Pumping: Used in commercial building water supply, cooling water circulation, and pressure boosting systems where consistent, high-volume water delivery is needed.
• Construction Site Water Handling: The ductile iron construction and rugged design make the HC Series well suited for construction site dewatering, water supply, and temporary water transfer operations.
• Municipal Water Systems: Suitable for municipal water supply, transfer, and distribution infrastructure where long service life, low maintenance, and reliable performance are essential.
• Mining Operations: The CA6NM stainless steel impeller and silicon carbide mechanical seal option make the HC Series capable of handling abrasive water conditions commonly encountered in mining and mineral processing water applications.
• Light Industrial Applications: Works well for process water supply, cooling water systems, and general industrial water transfer in light to moderate industrial environments.

Installation and Maintenance Details

The Franklin Electric HC Series Close Coupled Centrifugal Pump is designed for tough applications but engineered to be practical to install and service. Here is a summary of the key installation and maintenance features:

• Back Pullout Design: The rotating element can be removed from the back of the volute casing for maintenance without disconnecting suction or discharge piping. This feature saves significant time during routine service and repair.
• Rotatable Volute: The ductile iron volute can be rotated during installation to orient the discharge port in the most convenient direction for your piping layout.
• Jack-Out Holes: Built into the casing for quick and easy disassembly without requiring special tools.
• Mounting Flexibility: The HC Series can be installed in vertical or horizontal orientation to match system requirements and available space.
• Replaceable Shaft Sleeve: Protects the pump shaft from wear and can be replaced independently, extending the overall service life of the pump at lower cost.
• Bronze Wear-Rings: Replaceable bronze wear-rings maintain pump efficiency as wear occurs over time. Replacement is straightforward during routine maintenance.
• Seal Servicing: The two-piece stainless steel packing gland simplifies seal area maintenance. Both packing seal and mechanical seal options are available depending on application requirements.
• Motor Enclosure Options: ODP motors are suited for clean, dry indoor installations. TEFC motors provide better protection for outdoor, dusty, or humid environments.

For guidance on motor enclosure selection, seal type, or mounting configuration for your specific application, reach out to the team at Ken’s Distributing. We are happy to help you set up the HC Series for optimal performance in your environment.

Compatible Replacement Parts and Accessories

Maintaining the Franklin Electric HC Series Close Coupled Centrifugal Pump with genuine Franklin Electric replacement parts is the best way to protect your investment and keep the pump performing at its rated specifications. Kendisco stocks a full range of compatible parts and accessories for the HC Series, including:

• Mechanical seal replacement kits (silicon carbide/FKM)
• Packing seal and lantern ring kits
• Replaceable shaft sleeves
• Bronze wear-ring replacements
• CA6NM stainless steel impeller assemblies
• Bearing replacements
• Gasket and O-ring kits
• Two-piece stainless steel packing gland components

Using genuine Franklin Electric parts ensures the HC Series continues to operate at peak performance and helps protect your pump warranty. Browse the full selection of Franklin Electric replacement parts available at Kendisco today.

View Franklin Electric Replacement Parts at Ken’s Distributing

Frequently Asked Questions About the Franklin Electric HC Series Close Coupled Centrifugal Pump

What does HC stand for in the Franklin Electric HC Series?

HC stands for High Capacity. The Franklin Electric HC Series Close Coupled Centrifugal Pump is designed for applications that require higher flow rates, higher pressures, and more robust construction than standard close coupled centrifugal pump models. It features ductile iron construction, a CA6NM stainless steel impeller, and motor capability up to 50 HP at 3600 RPM.

What makes the HC Series different from the XS Series close coupled pump?

The HC Series uses ductile iron construction instead of standard cast iron, a CA6NM stainless steel impeller instead of a cast iron impeller, and operates at 3600 RPM instead of 1800 RPM. It also offers silicon carbide mechanical seal options and motor sizes up to 50 HP. The XS Series is a capable and reliable pump for many applications, but the HC Series is designed for heavier duty, higher capacity, and more demanding environments. Contact Ken’s Distributing to compare both series for your specific application.

What HP options are available for the HC Series?

Standard JP frame models of the Franklin Electric HC Series Close Coupled Centrifugal Pump are available up to 50 HP. Larger HP sizes use custom shaft JP frames. The 7.5 HP models currently listed by Kendisco are available in both single-phase (230 VAC) and three-phase (230/460 VAC) configurations with ODP or TEFC motor enclosures. Contact Ken’s Distributing for availability of other HP options.

What does low NPSH mean in the HC Series?

NPSH stands for Net Positive Suction Head. A pump with low NPSH requirements can operate reliably in applications where the available suction pressure is limited, such as pumping from shallow ponds, rivers, or reservoirs. The Franklin Electric HC Series Close Coupled Centrifugal Pump is optimized for low NPSH conditions, reducing the risk of cavitation and allowing installation in locations where the water source level is close to or below the pump inlet.

What seal options are available for the HC Series?

The Franklin Electric HC Series Close Coupled Centrifugal Pump is available with two seal options. The packed box with lantern ring is suitable for applications where controlled leakage is acceptable. The mechanical seal option features silicon carbide faces and FKM elastomers for leak-free, chemically resistant operation in more demanding applications. Ken’s Distributing can help you select the right seal type for your specific environment.

Can the HC Series be installed vertically?

Yes. The Franklin Electric HC Series Close Coupled Centrifugal Pump can be installed in either vertical or horizontal orientation, giving you flexibility to match the pump to your system layout and available installation space.

What is ductile iron and why is it better than cast iron?

Ductile iron, also known as nodular iron or spheroidal graphite iron, is a type of iron that has been treated to make the graphite in it form into spherical nodules instead of flakes. This gives ductile iron significantly higher tensile strength, impact resistance, and fatigue resistance compared to standard gray cast iron. In pump applications like the HC Series, ductile iron means the volute can handle higher pressures and more physically demanding operating conditions without the risk of cracking.

What applications is the HC Series best suited for?

The Franklin Electric HC Series Close Coupled Centrifugal Pump is best suited for large-scale irrigation systems, commercial water pumping, construction site water handling, municipal water systems, mining water operations, and light industrial applications where high capacity, durability, and low NPSH performance are important requirements.

Where can I buy the Franklin Electric HC Series Close Coupled Centrifugal Pump?

You can purchase the Franklin Electric HC Series Close Coupled Centrifugal Pump directly from Ken’s Distributing at Kendisco.com. Our team is available to help with model selection, seal and motor enclosure options, compatible replacement parts, and technical support for the HC Series pump.

Related Products at Ken’s Distributing

• Franklin Electric XS Series Close Coupled Centrifugal Pump – Close coupled centrifugal pump for irrigation, commercial, and construction applications
• Franklin Electric D Series Close Coupled Centrifugal Pump – General purpose close coupled centrifugal pump for residential and commercial water transfer
• Franklin Electric AG Series Close Coupled Centrifugal Pump – Agricultural-grade close coupled centrifugal pump for irrigation and farm applications
• Franklin Electric FAC Series Close Coupled Centrifugal Pump – Versatile close coupled centrifugal pump available in a wide HP range
• Franklin Electric AG Series Close Coupled Centrifugal Pump Repair Parts – Genuine replacement parts for Franklin Electric close coupled pump series
• Franklin Electric Replacement Parts – Genuine OEM parts for all HC Series models, available at Kendisco