G7A-2 Centrifugal Pumps
G7A-2 Centrifugal Pumps - Flanged Close Coupled
The G7A-2 Series Pump General Information
- Radial Split Casing Design. First of all Casing is close grain iron of 30,000 PSI minimum tensile strength. Back pull-out design also eliminates the need to disturb piping should the pump ever require service as a result 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.
- 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.
- Replaceable Casing Wear Ring. Prevents most wear on casing and is also easy to replace.
- Mechanical Shaft Seal. Mechanical Shaft Seal is self-adjusting for temperatures up to 225 °F (107 °C) and therefore pressures to 150 psi (1034 kpa). Has either ceramic seat and carbon seal faces for long trouble-free service. Special seals are available for higher temperatures and fluids other than water. Tapped opening is provided in the seal chamber for flushing seal faces.
- Bronze Shaft Sleeve. Gasketed and keyed hook-type sleeve protects shaft wear and corrosion in seal area.
- Interchangeability. The complete liquid end of any size pump is interchangeable while between motors on close-coupled pumps and the BURKS power frames of comparable size providing inventory flexibility, plus an option for handling emergency service.
- All Pumps Factory Tested. After careful assembly and inspection, EVERY pump is factory tested and hence will meet Hydraulic Institute standards.
- Individual performance curves should also be checked for final selection.
Jacketed Seal Cavity Design For Temperatures To 500
All models, with the exception of the G7-2-1/2 and all G9 series pumps are available in a Jacketed Seal Cavity design for pumping hot oil, hot water and heat transfer fluids in common use in another high temperature heating or cooling applications. This feature greatly extends seal life in high temperature applications. To order, so 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). So Example: G6-1-1/2MJ. Finally See Section on High Temperature Pumps for more information.
G7A-2 Centrifugal Pumps Motor Information
The standard Type JM motors supplied with these pumps offer the advantages of quiet operation, due to controlled shaft deflection for longer mechanical seal life and bearings sized to provide good service life. All motors in conclusion, are supplied by manufacturers providing field service facilities.
3500 RPM 60Hz.
- Capacities to 960 GPM (60.6 LPS)
- Heads To 380 Feet (116 M)
2900 RPM 50Hz.
- Capacities to 630 GPM (39.7 LPS)
- Heads To 265 Feet (80.8 M)