31004G9-4F-8.25

Burks 4G9-4F Series - Centrifugal Pump, Close Coupled

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 S. Steel.
Impeller - Bronze Fitted: Bronze, All Bronze: Bronze, All Iron: Cast Iron.
Shaft Seal: Carbon Ceramic SS Buna-N

The standard Type JM motors supplied with these pumps offer the advantages of quiet operation, controlled shaft deflection for longer mechanical seal life and bearings sized to provide good service life. All motors are supplied by manufacturers providing field service facilities.

Prevents wear on casing and is easy to replace.

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 fluids other than water. Tapped opening is provided in the seal chamber for flushing seal faces.

After careful assembly and inspection, EVERY pump is factory tested and will meet Hydraulic Institute standards.

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.

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 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: G6-1-1/2MJ. See Section on High Temperature Pumps for more information.

Casing is close grain iron of 30,000 p.s.i. 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.

The complete liquid end of any size pump is interchangeable between motors on close-coupled pumps and the BURKS power frames of comparable size providing inventory flexibility, plus an option for handling emergency service.