Clearance Adjustment on Gorman-Rupp Super T-Series pumps is accomplished by an external shimless cover plate which allows for super easy adjustment of the clearance between the impeller and the wear plate. This process eliminates the need to realign belts, couplings, and motors. It also does not disturb the mechanical seal and impeller back clearance is not disrupted. The unique collar and adjusting screw allow for incremental adjustments of the wear plate clearance with the turn of a hand. Once adjustments have been made, the collar locks in place maintaining the clearance setting even if the cover plate is removed. This design doubles the life of the impeller and wear plate, keeps the pump operating at maximum efficiency, and helps reduce clogging.

Are you noticing reduced flow or head with your Gorman Rupp Super T-Series pump? It might be time to adjust the clearance. Adjusting the clearance between the impeller and wear plate is an important preventative maintenance task, and it is Super Easy! Follow the link below to see our Service Bulletin which covers clearance adjustment on the Super T-Series Pump.

Performing a shut-off head test is one of the best ways to determine if the pump clearances need to be adjusted. The shut-off head is the maximum pressure that a pump can produce at zero flow. By slowly closing the discharge isolation valve while the pump is operating, the pressure in the discharge line will increase, and the pump will eventually reach its shut-off head pressure.

Comparing the discharge gauge readings to the shut-off head pressure when the pump was new is a good way to determine if the pump clearances need adjustment. If the shut-off head pressure is less than 5% of the original shut-off head pressure, it indicates that the internal clearances in the pump have increased due to wear or other factors.

Adjusting the pump clearances can help restore the pump’s performance and efficiency by reducing internal leakage and improving the pump’s ability to maintain pressure and flow.

Regularly performing shut-off head tests and monitoring pump performance can help identify potential issues early and prevent costly downtime and repairs.

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Envirep/TLC Environmental is a manufacturer’s representative serving the municipal and industrial water and wastewater market in Eastern and Central Pennsylvania, Southern New Jersey, Maryland, Delaware, the District of Columbia, and Northern Virginia.

We represent manufacturers of equipment used to pump, treat and dispose of wastewater and biosolids. We also represent manufacturers of equipment used to pump, treat, distribute, and store potable water.

As a manufacturers rep, we work with consulting engineers, municipalities, owners, and industries to provide budget pricing, pumping and process designs, and assist in the integration of equipment into the project.

Our factory-trained service professionals in our Service Department serve our customers by providing installation supervision, equipment startup, operator training, troubleshooting, and repairs.  Service agreements are available to provide periodic inspections and preventative maintenance to minimize downtime and maximize efficiency.

by Dwight Swan

 Gorman-Rupp is the industry leader and innovator in high-quality pump design. At Envirep/TLC, we will help you choose the best Gorman-Rupp^® pump parts for your needs. Our goal is to provide you with easy-to-operate, low-maintenance pump parts to ensure you are being as cost-effective as possible.

Envirep/TLC is an authorized distributor of Gorman-Rupp pump products and we carry a huge inventory of spare parts so our customers receive the best service possible.

When repairing a Gorman-Rupp pump, it is always best to use genuine Gorman-Rupp parts. Gorman-Rupp builds their parts to exact tolerances and exact material specifications. Not having the right part can reduce the service life and affect the life of the pump and efficiency of the pump. Only genuine Gorman-Rupp parts can guarantee that your part will fit perfectly, and deliver reliable service for many years.