MTH Pumps T41C-AB Liquid End — All Bronze Regenerative Turbine Pump for 56C Close-Coupled Applications
When a job demands reliable high-pressure performance in a compact, corrosion-resistant package, the MTH Pumps T41C-AB liquid end delivers. This all-bronze pump end is engineered for direct close-coupling to a standard NEMA 56C face motor, giving engineers and maintenance professionals the flexibility to pair it with an existing or replacement motor of their choice. The T41C-AB is part of MTH's well-established T41 series, a line built specifically for clean-fluid applications where low flow rates and moderate-to-high discharge pressures are the defining challenge. Flow coverage runs from 0.5 to 5 GPM, and the pump is rated to develop heads up to 600 feet — performance figures that make it well-suited for demanding installations where a standard centrifugal pump simply can't generate adequate pressure at these flow ranges.
What sets the T41C-AB apart is its all-bronze wetted construction, which provides broad resistance to corrosion in water service, hot water systems, and mild chemical environments. The hydraulically self-centering impeller creates a hydrodynamic film that keeps it properly positioned during operation, eliminating thrust load on the bearings and extending service life without requiring periodic manual adjustment. Only three major internal components make up the pump's core assembly, which means teardown and rebuild are straightforward, and replacement parts are commonly stocked. Every unit is fully factory-tested before shipment, so what you receive is a pump that has already been verified to perform to specification. Whether the application calls for a direct replacement liquid end or a fresh installation on a 56C motor already in the field, the T41C-AB is a proven, practical choice.
Key Features
- All-bronze construction throughout the wetted fluid path for excellent corrosion resistance
- Designed for direct mounting to NEMA 56C face motors (close-coupled, no shaft alignment required)
- Hydraulically self-centering impeller — no thrust load on bearings, no manual adjustment needed
- Simple three-component core design for fast, straightforward field service
- Buna N mechanical seal elastomers with high-temperature carbon seal face and ceramic seat
- O-ring gaskets throughout for reliable sealing and ease of service
- Stainless steel shaft sleeve under the mechanical seal for extended seal area protection
- Water flinger provides additional bearing protection in the event of minor seal weepage
- Rated for continuous duty in horizontal or vertical mounting orientations
- 300 PSI maximum case working pressure
- Every pump individually performance-tested before shipment
Applications
- Boiler feed and condensate return systems
- Hot water circulation and heating system makeup
- HVAC pressure boosting and hydronic system service
- Jockey pump / fire system pressure maintenance
- Industrial process water transfer and recirculation
- Parts washer and coolant recirculation systems
- Filtration system feed and pressure maintenance
- Chemical transfer where bronze wetted materials are compatible
- OEM equipment skids requiring a high-head, low-flow pump end
- Replacement liquid end for existing T41C 56C motor-driven pump assemblies
Specifications
- Model: T41C-AB
- Designation: LE (Liquid End — pump end only, no motor)
- Motor Mounting: NEMA 56C face (close-coupled)
- Pump Type: Regenerative turbine, single stage
- Construction: All bronze (casing, impeller, bracket, sleeve/bushing)
- Flow Range: 0.5 to 5 GPM (at 3450 RPM, 60 Hz)
- Maximum Head: 600 feet
- Maximum Case Working Pressure: 300 PSI
- Maximum Fluid Temperature: 300°F
- Suction Port Size: 1 inch NPT
- Discharge Port Size: 1 inch NPT
- Mechanical Seal Elastomers: Buna N
- Mechanical Seal Seat: Ceramic
- Mechanical Seal Face: High-temperature carbon
- Shaft / Sleeve: Stainless steel shaft sleeve (under seal)
- Gaskets: O-ring type throughout
- Compatible Speeds: 3450 RPM (60 Hz) / 2880 RPM (50 Hz) / 1750 RPM
- Assembly to the Motor is Required
- Manufacturer: MTH Tool Company, Inc. — Plano, Illinois
Frequently Asked Questions
Q: Does the T41C-AB come with a motor, or is it a pump end only?
The T41C-AB carries the designation "LE," which stands for Liquid End. This means it is the pump end only and does not include a motor. It is designed to be assembled directly to a customer-supplied or separately purchased NEMA 56C face motor, giving you the flexibility to choose the horsepower, voltage, phase, and enclosure type (ODP or TEFC) that fits your specific installation.
Q: What motor horsepower range is appropriate for the T41C-AB liquid end?
For the T41C impeller size operating at 3450 RPM, typical applications fall within the 1/3 to 3/4 HP range depending on the required operating point on the performance curve. MTH stocks service and replacement 56C face motors in common sizes, and the T41C-AB is compatible with standard NEMA 56C motors from major manufacturers. Always select a motor sized to prevent overloading at the highest head condition in your system.
Q: Can the T41C-AB be mounted vertically as well as horizontally?
Yes. The regenerative turbine design with its hydraulically self-centering impeller places no thrust load on the motor bearings, which means the pump operates equally well in either a horizontal or vertical mounting orientation. This gives installers added flexibility when working within tight equipment room layouts.
Q: What types of fluids is the all-bronze T41C-AB suitable for?
The all-bronze wetted construction makes the T41C-AB a good fit for clean water, hot water, condensate, light brines, and other fluids compatible with bronze and Buna N elastomers. It is not intended for slurries, abrasive media, or aggressive chemicals that attack copper-based alloys or Buna N. For harsher chemical service, MTH offers the T41 series in stainless steel and other material configurations.
Q: What is the difference between the T41C-AB and T41C-BF model designations?
The suffix indicates the material of construction. "AB" stands for All Bronze, meaning the casing, impeller, bracket, and internal wetted components are all bronze. "BF" stands for Bronze Fitted, which typically denotes a cast iron casing fitted with bronze internals. The all-bronze T41C-AB offers broader corrosion resistance and is preferred in applications where the casing itself may contact the fluid or where system fluid chemistry makes cast iron unsuitable.
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