Burks GA6-1.5MV-5-11/16 Pump End with Viton Seal and 5-11/16 in. Bronze Impeller
The Burks GA6-1.5MV-5-11/16 is a bare pump end from the GA6 1-1/2 in. end suction family, supplied without a motor so it can be mated to a close coupled NEMA JM motor already on hand or ordered separately. The MV designation in the model number identifies the Viton elastomer mechanical seal, which handles a wider range of hot water, glycol blends, light oils, and chemically aggressive fluids than the standard Buna arrangement. The 5-11/16 in. enclosed bronze impeller is a factory trim, so it drops into an existing GA6 installation and reproduces the same duty point the original pump was selected for.
Construction follows the pattern that has made the GA6 line a fixture in plant maintenance shops. The casing is close grain cast iron, bronze fitted, with a 2 in. NPT suction and a 1-1/2 in. NPT discharge, and it can be rotated into any of four discharge positions so the pump end fits the piping rather than the other way around. A bronze shaft sleeve protects the shaft under the seal, and the back pull out arrangement lets a technician reach the seal and impeller without breaking a single pipe joint. That detail alone turns a seal change from an afternoon of pipe work into a routine bench task.
This pump end suits process water transfer, wash and rinse loops, cooling and heat transfer circuits, pressure boosting, parts washers, and OEM skid packages where the builder supplies the driver. Buying the pump end on its own is also the practical answer when a motor is still healthy but the hydraulic end has worn, or when a fleet of identical machines needs a spare on the shelf. Every unit ships as a complete rotating assembly, ready to bolt to a compatible motor and return to service.
Key Features
- Bare pump end assembly, supplied without a motor for close coupled NEMA JM mounting
- Viton mechanical seal (MV) for elevated temperature and chemically demanding service
- 5-11/16 in. enclosed, balanced bronze impeller for smooth, low vibration operation
- Bronze fitted close grain cast iron casing rated to 200 PSI working pressure
- Four position casing permits discharge orientation to match existing piping
- Back pull out construction allows seal and impeller service without disturbing pipe work
- Bronze shaft sleeve protects the motor shaft from wear and corrosion
- Direct replacement for a worn GA6 1-1/2 hydraulic end where the motor remains serviceable
Applications
- Industrial process water transfer and recirculation
- Hot water and glycol heat transfer loops
- Wash, rinse, and parts washer circuits
- Cooling tower and condenser water service
- Pressure boosting and general liquid transfer
- Chemical compatible fluid handling within Viton limits
- OEM skid and equipment packages where the builder supplies the motor
- Maintenance spares and shelf stock for plants running GA6 pumps
Specifications
- Model number: GA6-1.5MV-5-11/16
- Product type: Pump end only, close coupled end suction centrifugal
- Series: Burks GA6 1-1/2
- Impeller diameter: 5-11/16 in. (5.6875 in.)
- Impeller type: Enclosed, balanced bronze
- Suction port size: 2 in. NPT
- Discharge port size: 1-1/2 in. NPT
- Shaft seal: Viton elastomer mechanical seal, carbon and ceramic faces
- Casing material: Close grain cast iron, bronze fitted
- Shaft sleeve: Bronze
- Maximum casing working pressure: 200 PSI
- Maximum inlet pressure: 100 PSI
- Maximum liquid temperature: 225 degrees F
- Nominal operating speed: 3500 RPM
- Motor mounting: NEMA JM close coupled, motor not included
- Casing orientation: Four position discharge
- Service access: Back pull out
Frequently Asked Questions
Q: Does this listing include a motor?
A: No. The GA6-1.5MV-5-11/16 is the pump end only. It ships as a complete rotating assembly ready to bolt to a compatible close coupled NEMA JM motor, which is purchased separately or reused from the existing pump.
Q: How do I confirm the 5-11/16 in. impeller is the right trim for my system?
A: Check the nameplate or model tag on the pump you are replacing. The trailing number in a GA6 model designation is the impeller diameter, so a unit tagged 5-11/16 matches this pump end directly and will reproduce the original duty point.
Q: What does the MV in the model number mean?
A: MV identifies the Viton seal version. Viton elastomers tolerate higher temperatures and a broader chemical range than the standard Buna seal used on base model GA6 pumps.
Q: Can the discharge be rotated after the pump end is installed?
A: Yes. The four position casing lets the discharge be indexed to any of four orientations, so the pump end can be aligned to existing piping without adding fittings or re-routing lines.
Q: What is involved in changing the seal later on?
A: The back pull out design allows the motor and rotating element to be withdrawn while the casing stays bolted to the piping. The seal and impeller can be reached and replaced without breaking any pipe connections.
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