Super T Series Gorman Rupp Dewatering Pumps

//Super T Series Gorman Rupp Dewatering Pumps
Super T Series Gorman Rupp Dewatering Pumps 2019-01-14T13:38:25+10:00
dewatering pumps

Super T Series

The Gorman-Rupp Super T Series self priming dewatering pump has been the world benchmark for this technology since 1963 (>50 years). These centrifugal pumps have been designed for economical, trouble-free operation, with superior solids handling capability and a large inspection cover to access pump internals for service or blockage removal. Advantages include:

PERFORMANCE

Super T Series Dewatering Pump – Performance

  • Flows: 5 l/s – 300 l/s
  • Heads: 5m – 40m
  • Solids: to 76mm spheres + Stringy to Very Stringy
  • Size: 2″, 3″, 4″, 6″, 8″, 10″ + 12″
  • Priming: Guaranteed Re-Primer
  • Application: Effluent to Trash and Sewage

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SPECIAL FEATURES

Super T Series Dewatering Pump – Special Features

Solids-Handling Impeller
The heavy-duty balanced, two-vane, semi-open ductile iron impellers provide maximum life. Pump-out vanes on the back of the dewatering pump shroud reduce foreign material build-up behind the impeller, minimising pressure on the seal and maximising bearing life.		 dewatering pumps
Patented Cartridge Seal
Gorman-Rupp’s double floating, self aligning, oil-lubricated mechanical seal is specifically designed for abrasive and/or trash handling applications. The silicon carbide faces and extra large seal oil chamber provide superior dry-run capability. The patented cartridge design also allows for accurate and easy installation.		 dewatering pump
Removable Rotating Assembly
Gorman-Rupp Super T series dewatering pumps are designed with a removable rotating element. This assembly can be removed and replaced in minutes without disconnecting piping or disturbing motor alignment.		 centrifugal pumps
Removable Cover Plate
All Super T series dewatering pumps have a large removable cover plate for accessing pump internals for the quick removal of blockages. Check valves, impellers and wear plates can also be replaced through this cover.

Self Priming

Super T Series pumps are true self primers. After being filled with liquid, Super T Series pumps are guaranteed to prime and (more importantly) re-prime every time. They will do this on suction lifts up to 7.6metres above the liquid level.

Super T Series pumps are ideal for continuous, unattended, automatic operation in municipal and industrial wastewater or effluent pumping duties.

 

 

 

Eradicator Solids Management System

Gorman-Rupp Super T Series self priming centrifugal pumps are capable of passing 76mm spherical solids [in 4” size and up] through all internal passages withing the pump (not just the impeller). The 3” pump will handle a 63mm solid.

Recent advances have included a self cleaning wear plate to help minimise blockages by stringy materials such as rags.  But because of the changes in sewage make-up [the introduction of the “wet wipe” for example], and water saving measures being used by industry and municipalities, something else needed to be done.

To tackle these growing problems, Gorman-Rupp has released the “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.

 

High and Dry

Gorman-Rupp self priming centrifugal pumps can be mounted “high and dry” above the sump liquid level. No need for (submersible) pumps to be in the liquid being pumped (wearing and corroding from the inside and the outside). This means there are no guide rails to maintain, no [leaking?] discharge bend to maintain/replace, and no need to open wet well lids and expose operators to falls.

Self priming pumps also virtually eliminate confined spaces issues and eliminate the need for lifting devices such as cranes or hoists, because pumps are at the surface [ground level], so are easy to access for monitoring and maintenance.

Reduced WH&S

Using Gorman-Rupp self priming pumps can reduce WHS issues associated with pumping applications. Because pumps are located at “ground level”, high and dry above the wet well [not in it], pumps are easily accessed by operators for monitoring, maintenance or repair. Some of the identified risks that can be reduced or eliminated include:

        • Working over water
        • Working at heights
        • Working with cranes
        • Working with heavy swinging weights

Other OH&S issues can also be eliminated with the use of self primers. Unlike submersible pumps, self priming pumps do not need guide rails and discharge base elbows that will need service and replacement over the life of the installation, requiring confined spaces entry and the associated dangers. Submersible pumps also need chains to raise them to the surface. These chains can become corroded and weakened over time, creating a potential danger to operators lifting them.

Easy Access

Because Gorman-Rupp self priming pumps are located at ground level, high and dry above the liquid level, they are easy to access for monitoring, service and repair.

Whereas submersible pumps can only be accessed by opening wet well lids (exposing operators to “working at heights” and “working over water”) and winching or craning pumps to the surface (exposing operators to “working with swinging weights”), operators can access Gorman-Rupp self primers at ground level.

End suction pumps will often need a “dry well” which is accessed by going down stairs or a ladder. They need isolation valves on the suction. This makes them more difficult to access than Gorman-Rupp self primers.

Pump Operator Safety

Duty of Care

It is incumbent upon designers, engineers and asset owners to provide the safest possible environment for operators of pumping equipment. For wastewater pump operators, a danger that is ever present is that of falling into open wet well pits. Even covered wells need to be opened for pump maintenance as with sewage pump stations. This risk is unavoidable when using submersible pumps, because the pumps are at the bottom of the wastewater wells. When pumps choke or need maintenance, safety lids need to be opened and operators are exposed to falls. This is a serious risk, with potential of serious injury or even death.

This risk can be greatly reduced or even eliminated by using Gorman-Rupp Super T Series self priming wastewater pumps, because they can be placed high and dry above the wet well, with no need to ever open wet well lids to expose operators to the risk of falling or drowning.

Reduce Fat Build-Up

One of the issues that plague some wastewater pump installations is that of fat, sediment or debris build-up in wet wells. This has the potential of causing odour issues, regular pump chokes, damage to wet well walls and reduced system reliability. By using a “self-cleaning wet well” design in conjunction with Gorman-Rupp Super T series pumps, wet wells have their contents removed (including fat, sediment and other debris) with each and every pump cycle. This removes odour issues, reduces the chances of gas production, reduces the risk of attack to concrete walls, and greatly reduces the need for entry into these wells for the purposes of cleaning etc.

Pump Safety Features

Gorman-Rupp Super T Series pumps also have other safety features. A safety pressure relief valve in the pump will vent any excessive pressure build-up. As a back-up to this, the suction check valve has a burst disc that will “pop” if for some reason the pressure relief valve malfunctions (venting any pressure build-up back to the wet well).

Maintenance Features

Gorman-Rupp Super T Series self priming pumps have been designed to be the easiest and most cost effective wastewater pumps to service and maintain. The following features make life easier for operators and very cost effective for asset owners:

Less Blockages

Because all internal passages will handle a 76mm spherical solid on most models, and pumps come standard with a patented self cleaning wear plate system to resist choking from stringy materials such as rags, Super T Series pumps will choke much less than most other wastewater pumps. This minimises downtime, increasing productivity.

Easy Blockage Removal

All pumps will eventually choke on something. But unlike submersible pumps that require cranes, safety barriers and several operators, Super T Series pumps have a large removable cover-plate, allowing access to pump internals in minutes, by just one operator, making blockage removal a quick and easy task.

Easy and Simple Clearance Adjustment

Most centrifugal pumps have radial clearances between impeller and wear rings. Gorman-Rupp Super T Series pumps have axial clearances that are adjusted through external adjusting screws on the cover-plate. One operator with 2 spanners can adjust clearances in just 4 minutes. Adjusting clearances on some submersible pumps could take several operators most of an entire day.

Easy and Simple Wear Plate Replacement

Wear plates on a Gorman-Rupp Super T can be replaced in just a few minutes. Operators just remove the pump inspection cover, and replace the wear plate which is bolted to it via 4 studs. Compare this to some centrifugal and submersible pumps, having wear rings that often require heating the casing ring and/or cooling the wear ring, and often requiring the chiselling off of the old one.

Easy Major Overhaul

The major wearing components in a Gorman-Rupp Super T form part of the rotating assembly. This includes the seal, bearings, impeller and seal plate. This “cartridge” is easily replaced on a Super T, without needing to take it back to the workshop or even remove the pump from the piping system. Operators simply remove the old rotating assembly by removing 4 bolts, then “plug in” the new one. The old one can then be taken back to the workshop where operators can take their time to replace any worn parts and then use the repaired rotating assembly as a back-up spare.

Materials of Construction

Gorman-Rupp pumps can be purchased in a variety of materials of construction, to suit the liquid being pumped.

The following table shows the available materials of construction of the Wastewater and effluent pump series.

Pump Series Standard Cast Iron HDI Fitted 316SS Fitted CD4MCu Fitted Complete CD4MCu Complete HDI High Chrome Impeller
Ultra V
*
*
*
*
Super T
*
*
*
*
*
#
#
Super U
*
*
*
*
*
10 Series
*
*
*
*
80 Series
*
#
PA/PAH
*
*

‘* Denoted all models

‘# Denotes some models

“Fitted” refers to pumps that are supplied with the standard construction pump, but fitted with special material impeller, wear plate, seal plate and shaft.

“HDI” is Gorman-Rupp’s “Hard Iron”. This material is used to resist the action of abrasive materials such as grit. This material has a Brinell hardness of approximately 400, making it approximately twice as hard as cast iron.

316SS is a marine grade stainless steel, used for service where liquids are corrosive. It has a PREN [Pitting Resistance Equivalent Number] of 27.1 and a Brinell hardness of approximately 217.

CD4MCu is a Duplex Stainless Steel, used where services are corrosive and abrasive. It has a PREN of 32.1 and a hardness of 280-300 on the Brinell scale.

High Chrome impellers, available in Super T Series models T3, T4 and T6 have a brinell hardness of approximately 650 and is an excellent material choice for highly abrasive service.

The following table shows the available materials of construction of the clean water and fuel handling pumps pump series.

Pump Series Cast Iron Construction Cast Steel Construction Cast Aluminium Construction Bronze Fitted Aluminium Impeller Ductile Iron Casing
0 Series
#
#
#
#
Roto Prime
#
#
#
VG/VGH
#
#

 

Gorman-Rupp G Series [rotary gear pumps] are available in the following materials of construction:

  • All Iron (including Ductile iron rotors – 2.5 times the strength of cast iron)
  • All Steel
  • All stainless steel
  • Extreme Duty fitted (hardened components to resist wear)

Eradicator Solids Management System

Gorman-Rupp Super T Series self priming centrifugal pumps are capable of passing 76mm spherical solids [in 4” size and up] through all internal passages withing the pump (not just the impeller). The 3” pump will handle a 63mm solid.

Recent advances have included a self cleaning wear plate to help minimise blockages by stringy materials such as rags.  But because of the changes in sewage make-up [the introduction of the “wet wipe” for example], and water saving measures being used by industry and municipalities, something else needed to be done.

To tackle these growing problems, Gorman-Rupp has released the “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.