Gorman-Rupp’s T3A3S-B is the smallest of their “Super T Series” range of self-priming, solids handling trash pumps. They are ideal as industrial wastewater pumps or as sewage pumps in sewage pump stations or at the sewage treatment plant. This pump’s excellent NPSHr characteristics and re-priming capability make it the ideal choice for continuous unattended automatic operation. The ability to re-prime for a “self-priming” pump is paramount for unattended operation.
Re-priming is a term Gorman-Rupp developed for describing a pump’s capacity to re-prime automatically with a completely dry suction line and only a partially filled casing. This is necessary, because when pumping wastewater, a solid can get caught in the non-return flap valve of the pump when the pump stops at the end of a cycle, exposing the suction line to atmosphere. If the pump cannot re-prime the line with a partially filled casing, the pump is out of operation. The Gorman-Rupp Super T and Ultra V Series pumps are designed to re-prime under these severe conditions, every single time. These guaranteed re-priming lifts are published on each Gorman-Rupp Super T and Ultra V curve.
The T3A3S-B is an excellent solids handling pump, being able to handle spherical solids up to 63mm in diameter, and because of its self cleaning wear plate system, it is able to handle stringy materials such as rags, gloves and plastic bags. This pump is also mounted “high and dry” above the wet well and has a large removable cover plate which makes maintenance and removal of any blockages much simpler than that of submersible pumps.
When an application involves the handling of heavy loads of stingy materials such as “wet wipes”, feathers or large quantities of rags, then the T3A3S-B can be converted to a T3C60SC-B, which means the pump is fitted with Gorman-Rupp’s new “Eradicator™” Solids Management System. The Eradicator™ system features an aggressive self-cleaning wear-plate incorporating a number of notches and grooves, as well as a patent pending lacerating tooth that helps break up stringy materials, scrape them off the impeller vanes and pass them through the pump – all without impacting performance or interrupting service. A special cover plate with the system includes a patented lightweight inspection cover that can easily be removed if necessary to inspect pump internals.
System benefits include improved operational efficiency, increased uptime, reduced maintenance costs, lower life cycle costs and easier access to the impeller. Operators will also find that the lighter cover-plate is easier and safer to work with.
Eradicator-equipped pumps do not require expensive chopper blades that need periodic replacement, but rely on passing large solids and stringy materials straight through the pump.
The T3A3S-B has 80mm suction and discharge ports and is capable of flows to 25 l/s and heads to 32m. The pump can operate on suction lifts to 7.6m, and are available in various materials of construction, including hardened iron for abrasive applications, 316ss for corrosive applications and CD4MCu [duplex stainless steel] for corrosive and abrasive applications.
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