EVAK Drainox range
EVAK Drainox 400 – 230v
- Established 1975
- Trusted by thousands of customers
The EVAK Drainox 400 (230V) is a heavy-duty stainless steel and cast iron submersible drainage pump built for arduous site drainage and dewatering. 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
- 230V automatic (float switch), plugs into standard UK mains
More about this product
Overview
The EVAK Drainox 400 (230V) is a heavy-duty submersible site drainage pump designed for arduous dewatering applications on construction sites, sumps and drainage pits. 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. This 230V model plugs straight into standard UK mains and is supplied with float switch for automatic operation, making it well suited to permanent sump installations, cellar drainage and unattended dewatering.
Key Features
Performance at a Glance
Technical Specification
| Voltage | 230V single-phase |
| Motor rating | 400W (0.5HP), 2850 RPM |
| Current draw | 4A |
| Operation | Automatic (float switch fitted) |
| 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, internal capacitor |
| 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 |
Applications
Construction site dewatering, arduous site drainage, sumps and drainage pit installations, basement clearance, and any application requiring durable pump build in silty or gritty water. The 230V version plugs into standard UK mains, making it well suited to permanent unattended sump installations, cellar drainage and any duty where a mains socket is available.
FAQs
Yes – the 230V model plugs straight into standard UK mains, making it suited to permanent installations in cellars, basements and sumps where a socket is available.
The Drainox 230V is supplied with a fitted float switch as standard – EVAK doesn’t produce a manual 230V variant. If you need manual operation, choose the 110V manual or the 400V three-phase manual.
The Drainox is a heavy-duty site drainage pump with a 5mm free passage and cast iron construction – built for arduous dewatering. The Residox is a puddle sucker designed to pump right down to 1mm above the floor, better suited to flood recovery than site drainage.
The Drainox 750 offers 300 l/min and 15m head for larger sites or uphill discharge. The Drainox 1500 delivers 470 l/min and 19.5m head where three-phase power is available.
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 – 230v. 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.