Videos
Learn how the PA and PAH series pumps work in the field.
Gorman-Rupp Prime Air Priming Assisted (Dry Prime) Pumps
An overview including the features and benefits of Gorman-Rupp’s Prime Aire priming assisted pumps.
- Tackle even the toughest jobs for sewage bypass operations, construction site dewatering where intermittent flow can be a problem.
- Dependable and versatile
Our expert team is standing by for any questions you have about how best to configure your pump system.

Application: Wastewater
Industry: Food & Beverage
Region: QLD

Project Showcase: One Harvest
Food manufacturer looks to Hydro Innovations to solve its wastewater challenge.
Feedback from the plant was “We couldn’t be happier with this pump and it’s become the standard that we will use going forward” and “One of the best things we have done”.
The pump has performed so well, the plant is instigating a policy to replace their other submersible pumps with Gorman-Rupp self-priming pumps.
3″ [80mm] + 4″ [100mm]
6″ [150mm] + 8″ [200mm]
10″ [254mm] + 12″ [305mm] + 16″ [406mm]
Engine Drive
Bare Shaft
PA and PAH Series Grey Water, Dewatering, and Engine Driven Pump Performance
See the specifications for the PA and PAH series pump.
Introduction paragraph talking about versatility, mentioning applications and materials and some use cases.
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

Special Features and Pump Benefits
Features designed for longer field times.

Patented External Shim-less Adjustment System
The shim-less impeller clearance adjustment allows for accurate maintenance of the clearance between the impeller and wear wear ring, without replacing parts or removing the grey water pump from service. Once adjustments have been made, the unique collar and adjusting screw maintains the clearance setting during other maintenance or inspection events. Peak efficiency is maintained, the life of the wear ring is maximised, and the potential for blockages is reduced.

Bearing/Shaft Protection
The bearings and shaft of a Gorman-Rupp PAH Series self priming pump are protected in the event of a mechanical seal failure. A double lip seal and atmospheric vent arrangement are in place if the mechanical seal is breached. Any leak through the mechanical seal and past the first lip seal will vent to atmosphere and not breach the bearing chamber.
Our Team is available to answer your pump query within the hour
Hydro’s experts are standing by to help you get the best pump, aerators and genuine spare parts for your specific project.
or Call
(02) 9898 1800
Monday – Friday
9am – 5pm
Australia Wide

Hydro Innovations is proud to distribute a broad range of quality, reliable and industry-leading industrial pumps and aerators.
We are also delighted to share that Hydro Innovations is proud to be the exclusive distributor of Gorman-Rupp Pumps.
Gorman-Rupp is the world leader in self-priming centrifugal wastewater pump technology, and invests heavily in R&D, and in training for their international representatives – like Hydro Innovations.
This puts us in an excellent position to make the very best recommendations for our Australian customers.
Our other suppliers, Ragazzini of Italy and EDUR of Germany, are also world leaders in their respective technologies (Peristaltic Pumps – Ragazzini, and Specialist centrifugal pumps – EDUR).
We carry a very large inventory of pumps and spare parts for all of these brands, to help us to deliver industry-leading service.