Burks EC10M Turbine Pump Only — Base Mounted Regenerative Pump End
The Burks EC10M is a base mounted regenerative turbine pump end supplied as pump only, meaning it ships without a motor, coupling, baseplate, or coupling guard. That makes it the practical choice when an existing drive package is still in good condition and only the wet end needs replacing, or when an OEM is building a skid and wants to specify the motor separately. The pump end carries a 1-1/2 in. NPT suction and a 1-1/4 in. NPT discharge, and its power frame rides on grease-lubricated ball bearings that carry the shaft load independently of the driver.
Construction is bronze fitted cast iron. The close-grain iron casing is rated for a maximum working pressure of 200 PSI, the shaft is No. 303 stainless steel, and the bronze impeller runs Monel blades against a bronze raceway. A carbon, ceramic, stainless steel, and Buna-N mechanical seal handles liquid temperatures to 225°F. Burks' Life-Lok external adjustment lets a technician reset impeller-to-raceway clearance from outside the pump as parts wear, which restores performance without a full teardown and is one of the reasons these units stay in service for decades.
Regenerative turbine hydraulics are what set the EC10M apart from a comparable centrifugal. It develops high head at modest flow, so it fits duties where a centrifugal would need multiple stages: boiler feed, condensate return, pressure maintenance and jockey duty, heat transfer circulation, chemical and additive metering, and spray systems. The liquid must be clean, non-abrasive, and low in viscosity, since the tight running clearances that produce the head are also intolerant of grit. Maximum inlet pressure is 50 PSI, and the pump self-primes once the casing has been filled.
Key Features
- Pump end only — motor, coupling, baseplate, and coupling guard are not included
- Base mounted regenerative turbine design for high head at low to moderate flow
- Bronze fitted cast iron construction with close-grain iron casing
- Bronze impeller with Monel blades running in a bronze raceway
- No. 303 stainless steel pump shaft
- Life-Lok external impeller-to-raceway clearance adjustment restores performance without disassembly
- Power frame with grease-lubricated ball bearings
- Mechanical seal rated to 225°F with standard Buna-N elastomers
- Self-priming after the casing is filled
- Factory tested for capacity, head, and power consumption
Applications
- Boiler feed and condensate return
- Pressure boosting and pressure maintenance / jockey pump duty
- Heat transfer and hot water circulation
- Chemical feed and additive metering
- High-pressure spray and washdown systems
- Water treatment and general industrial process transfer
- OEM skid-mounted and engineered pumping packages
- Clean, non-corrosive, non-abrasive, low-viscosity liquids only
Specifications
- Model: EC10M
- Type: Regenerative turbine, base mounted
- Configuration: Pump end only (bare pump, no motor)
- Suction port size: 1-1/2 in. NPT
- Discharge port size: 1-1/4 in. NPT
- Nominal speed: 1750 RPM
- Impeller bore: 0.625 in. (5/8 in.)
- Series capacity range: 14–35 GPM
- Series head range: 20–380 ft
- Maximum casing working pressure: 200 PSI (1379 kPa)
- Maximum inlet pressure: 50 PSI (344 kPa)
- Maximum liquid temperature: 225°F (107°C) with standard seal
- Casing: cast iron, 30,000 PSI minimum tensile strength
- Impeller: bronze with Monel blades
- Raceway: bronze
- Shaft: No. 303 stainless steel
- Mechanical seal: carbon / ceramic / stainless steel / Buna-N
- Bearings: grease-lubricated ball bearings
Frequently Asked Questions
Q: Does the EC10M include a motor?
A: No. The EC10M is sold as a pump end only. It ships without a motor, coupling, baseplate, or coupling guard, so you either reuse an existing drive assembly or specify those components separately.
Q: What motor frame and speed should the EC10M be paired with?
A: The EC10M is a 1750 RPM pump end. Match the driver to the horsepower your specific duty point requires and confirm shaft and frame compatibility before ordering, since the correct HP depends on the flow and head you are actually operating at.
Q: Can the EC10M handle liquids with suspended solids?
A: No. Regenerative turbine pumps rely on very tight impeller-to-raceway clearances to build head, and abrasives will erode those clearances quickly. The EC10M is intended for clean, non-abrasive, low-viscosity liquids.
Q: What does the Life-Lok adjustment actually do?
A: As the impeller and raceway wear, clearance opens up and head falls off. Life-Lok lets a technician re-establish that clearance with an external adjustment rather than pulling the pump apart, which recovers lost performance in minutes instead of hours.
Q: Can the seal be upgraded for higher temperatures?
A: The standard Buna-N mechanical seal is rated to 225°F. Higher-temperature service generally requires an alternate elastomer or a jacketed seal arrangement, which is offered on select models in the series — confirm availability for your exact configuration before ordering.
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