GMP EA Bronze Self Priming Salt Water Pumps

Where the GMP EA Bronze Pump is Used

The primary application for the EA bronze range is seawater and saline water transfer in marine, coastal, and waterside environments. The bronze construction resists the accelerated corrosion that would rapidly degrade cast iron or standard steel components in contact with salt water. Typical installations include marina wash-down systems, cooling water circuits aboard vessels, coastal irrigation intakes, and aquaculture water transfer where the liquid contains dissolved salts or marine sediment.

Swimming pool circulation is the other main use case. The open impeller tolerates fine debris and suspended particles that would clog a closed-impeller pump, and the non-return valve prevents siphoning between cycles, which is a practical advantage in pool plant rooms where the pump runs on a timer. The 2-inch models are well suited to domestic and small commercial pools; the 3-inch and 4-inch models are appropriate for larger commercial or public pools.

The range is also used in industrial and process applications where the liquid has a mild corrosive or saline character, including desalination pre-treatment, food industry brine transfer, and cooling loops in coastal plant. The silicon carbide seal upgrade, available on request, extends chemical resistance further where the liquid is more aggressive. For related guidance, see the AES Rewinds self-priming pumps guide and the full surface mounted pumps range.

Frequently Asked Questions

Can these pumps handle actual seawater continuously?

Yes. The pump casing, inlet flange, and impeller are all cast in bronze, which is the standard material for continuous seawater service. The stainless steel shaft resists corrosion from incidental seawater contact. These pumps are specifically designed for this duty, unlike cast iron models that would corrode quickly in saline applications.

What is the maximum suction depth for the EA bronze range?

All models in this range have a maximum suction depth of 6 metres. The non-return valve on the inlet retains water in the suction line after the pump stops, which ensures the pump can re-prime automatically at the next start without manual intervention.

What is the difference between the single-phase and three-phase models?

Single-phase 230V models (EAS8, EAT1) run from a standard UK domestic or commercial single-phase supply. Three-phase 400V models (EAS9, EAT2, EALE) require a three-phase electrical supply, which is common in commercial, industrial, and marine installations. The three-phase models draw lower amperage for the same motor output, which reduces electrical load and can simplify wiring on sites with three-phase available.

Can these pumps handle solids or debris in the water?

Yes, within the limits shown in the specification table. The open impeller design allows solids passage up to 16mm on the 2-inch models, up to 27mm on the 3-inch models, and up to 35mm on the 4-inch EALE. Abrasive solids should be avoided as these would cause accelerated wear on the impeller.

Are high-pressure or high-volume versions available?

Yes. GMP manufactures high-pressure and high-volume variants of the EA bronze pump to order. These are not listed in the standard product grid. Contact AES Rewinds on 01252 515169 to discuss requirements and lead times for these special configurations.

What temperature liquids can these pumps handle?

The maximum liquid temperature for the EA bronze range is 70°C. This makes them suitable for warm seawater recirculation and heated pool systems, as well as process applications where the liquid is elevated above ambient temperature.

For help selecting the right pump for your application, contact the AES Rewinds team on 01252 515169 or browse the complete GMP pump range. All orders over £200 (ex VAT) qualify for free next working day delivery to mainland UK addresses.