Burks 4GNA6-1-1/2-MV Centrifugal Pump, Close Coupled, 60 Hz, 1750 RPM, ODP Motor Enclosure, 80 lbs.
Adapter Material
Cast Iron
Casing Material
Cast Iron
Casing Working Pressure
200
Discharge NPT (Inches)
1-1/2"
Impeller Material
Bronze
Inlet Pressure (PSI)
100
Material
Bronze Fitted
Maximum Operating Temperature
250°F (121°C)
Motor Shaft Material
Steel
Shaft Seal Material
Viton
Suction NPT (Inches)
2
GNA6-1-1/2 Series Information
General Description
Burks GNA6-1-1/2 Series - Centrifugal Pump, Base Mounted
Materials of Construction
Adapter - Bronze Fitted: Cast Iron, All Bronze: Bronze, All Iron: Cast Iron. Casing - Bronze Fitted: Cast Iron, All Bronze: Bronze, All Iron: Cast Iron. Casing Wear Ring - Bronze Fitted: Bronze, All Bronze: Bronze, All Iron: Steel. Shaft: Steel. Shaft Sleeve: Bronze Fitted: Bronze, All Bronze: Bronze, All Iron: #316 Stainless. Impeller - Bronze Fitted: Bronze, All Bronze: Bronze, All Iron: Cast Iron. Shaft Seal: Carbon Ceramic SS Buna-N
Casing Wear Ring
Prevents wear on casing and is easy to replace.
Mechanical Shaft Seal Information
Mechanical Shaft Seal is self-adjusting for temperatures up to 225°F (107°C) and pressures to 150 psi (1034kpa). Has ceramic seat and carbon seal faces for long trouble-free service. Special seals are available for higher temperatures and fl uids other than water. Tapped opening is provided in the seal chamber or flushing seal faces.
Factory Tested
After careful assembly and inspection, EVERY pump is factory tested and will meet Hydraulic Institute standards.
Enclosed Bronze Impeller
Enclosed bronze impeller is of latest hydraulic design for maximum efficiency. It is balanced for vibration free operation. Precision fit to shaft and double-locked with key and cap screw.
Jacketed Seal Cavity
All models, with the exception of the GNA7-2 1/2 and all GN9 series pumps are available in a Jacketed Seal Cavity design for pumping hot oil, hot water and heat transfer fluids in common use in high temperature heating or cooling applications. This feature greatly extends seal life in high temperature applications. To order, add suffix “MJ” to pump catalog number for temperatures below 400°F (204°C) and add suffix “MJK” to pump catalog number for temperatures over 400°F (204°C). Example: GNA5-1-1/2-MJ.
Radial Split Casing Design
Casing is close grain iron of 30,000 PSI minimum tensile strength. Back pull-out design eliminates the need to disturb piping should the pump ever require service - the casing stays in the line. Centerline discharge. Stud mounted casing assures positive alignment and allows rotation of discharge to eight different positions. Openings are provided for test gauges, for venting and for draining the pump.
Coupling Guard
Furnished on all complete Base-Mounted units manufactured by Burks Pumps. Not furnished with purchase of pump only, but required.
Gasketed Bronze Sleeve
Gasketed Bronze Sleeve on GNB and GNC power frames protects the shaft against wear and corrosion. Shaft on GNA power frame in #316 Stainless Steel.
Bearings
Grease lubricated ball bearings provide two years minimum service at maximum load. Average bearing life is five times minimum. Wide bearing spacing provides soild shaft support.
Oil Seals
Protect both bearings
Convenient Relubrication
Tapped and plugged openings are conveniently located for easy relubrication of power frame.
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