EVAK Drainox range
EVAK Drainox 400 – 400v
- Established 1975
- Trusted by thousands of customers
The EVAK Drainox 400 (400V) is a heavy-duty stainless steel and cast iron submersible drainage pump built for arduous site drainage and dewatering where three-phase power is available. Contractor-grade construction with a Hytrel vortex impeller, SIC/SIC double mechanical seal and FC20 cast iron housing – designed to outlast disposable pumps in silty, gritty conditions.
- Stainless steel strainer base, outer cover and handle
- FC20 cast iron pump housing, ADC12 alloy motor housing
- Hytrel vortex impeller with 5mm free passage
- 400V three-phase, manual operation – suited to commercial and industrial installations
More about this product
Overview
The EVAK Drainox 400 (400V) is the three-phase manual variant of the Drainox 400 site drainage pump – built for arduous dewatering applications on commercial and industrial sites where three-phase power is available. Contractor-grade throughout – stainless steel strainer base, cover and handle over an FC20 cast iron pump housing, with a highly abrasion-resistant Hytrel vortex impeller and SIC/SIC double mechanical seal in an oil chamber. The three-phase motor draws just 2A, delivering the same 225 l/min flow and 11m head as the single-phase variants with reduced running cost on suitable installations.
Key Features
Performance at a Glance
Technical Specification
| Voltage | 400V three-phase |
| Motor rating | 400W (0.5HP), 2850 RPM |
| Current draw | 2A |
| Operation | Manual (no float switch) |
| Max flow | 225 litres/min |
| Max head | 11 metres |
| Free passage | 5mm |
| Discharge | 2″ BSP female with hosetail |
| Seal | Double mechanical seal, SIC/SIC, oil chamber |
| Motor protection | Auto-reset thermal protector |
| Cable | 10m H07RN-F |
| Housing materials | Stainless steel strainer base, cover and handle; FC20 cast iron pump housing; ADC12 alloy motor housing and seal casing |
| Impeller | Hytrel vortex, abrasion resistant |
| Weight | 13kg |
| Dimensions | Height 345mm · Diameter 185mm · Base 143mm |
| Min water level | 53mm |
Applications
Commercial and industrial site drainage, contractor dewatering on three-phase sites, permanent installations with external control panels, and any dewatering duty where three-phase power is preferred for reduced running cost and improved motor efficiency. The 2A current draw makes it a lightweight electrical load on a three-phase supply.
FAQs
Yes – this is the 400V three-phase variant. If your site only has single-phase power, choose the 110V (site) or 230V (mains) variant instead.
This is the manual variant, without a fitted float switch. If you need automatic operation, external level controls or a control panel with float switches will need to be specified separately.
Three-phase motors are inherently more efficient than single-phase motors at the same power rating. The 400W motor draws around 2A per phase on 400V, compared to 4A on 230V or 6A on 110V single-phase.
The Drainox 750 (also 400V three-phase manual) offers 300 l/min and 15m head for larger sites. The Drainox 1500 delivers 470 l/min and 19.5m head – the appropriate choice for high-demand three-phase installations.
Standard delivery:
Standard delivery is free on most orders. Some items may incur a delivery charge depending on weight, size or value. Any applicable charge will be displayed at checkout.
Deliveries will typically be made between 7am and 6pm, Monday to Friday (excluding public holidays).
Next day delivery:
Next working day delivery is available for a £16.50 + VAT delivery charge.
Orders must be placed before 12 noon to qualify for next working day delivery. Orders placed after 12 noon on Thursday but before noon on Friday will be delivered the following Monday. Orders placed after 12 noon on Friday will be delivered on Tuesday.
Pallet/Large/Difficult items:
Some large, heavy or difficult to transport items may incur an additional delivery charge. Please contact us for a delivery quote before ordering.
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Frequently Asked Questions
Quick answers to common questions about the EVAK Drainox 400 – 400v. For technical specifications, see the product details above; for sizing or installation advice, contact our team. If you have any other questions, we're happy to help.
What is a submersible pump?
A submersible pump is designed to operate fully submerged in the liquid it is moving. The motor is sealed inside the pump body and cooled by the surrounding water. Submersibles are used for drainage, sewage, septic tanks, deep wells and boreholes, and for raising water from sumps, cellars and floodwater. Many stocked at Anglian Pumping handle solids in suspension.
Can submersible pumps handle solids and sewage?
Yes – some submersibles are designed for clean water only, others handle solids up to 50 mm or full raw sewage. Anglian Pumping stocks ABS, BBC, Flygt and T-T Submersibles ranges that include vortex, single channel and grinder impellers for different solids handling requirements. Always match the pump to the maximum solid size and the type of effluent it will see.
When should I use a submersible pump instead of a surface pump?
Use a submersible when the water level is more than around 8 metres below the pump installation point – surface pumps cannot self-prime beyond that depth. Submersibles are also better when the liquid contains solids, when noise must be minimised, or when the pump needs to operate in confined spaces such as sumps and chambers where a surface pump would not fit.