Evak Stainox range
EVAK Stainox 5.10 -400v
- Established 1975
- Trusted by thousands of customers
The Evak Stainox 5.10 (400V) is a fully cast AISI 316 stainless steel submersible sewage pump for arduous contaminated water and corrosive effluent duties. 0.75 kW / 1 HP three-phase 400V motor, 2″ flanged discharge, vortex impeller with 35 mm solids handling.
One step up from the 5.05 — 470 L/min max flow at 14 m max head. Loss-wax cast 316 body throughout with Viton gaskets, O-rings, and lip seal. Three-phase operation draws just 6 A at full load — ideal for installations with 3-phase distribution and dedicated motor starters. Manual operation only.
Cast 316 SS
Vortex impeller
Twin SiC seals
Viton throughout
IP68
More about this product
The Evak Stainox 5.10 (400V) is the 1 HP three-phase variant in Evak’s fully cast AISI 316 stainless steel submersible sewage pump range. Manufactured by lost-wax casting for high dimensional accuracy, the entire pump — body, impeller, motor housing, cover, shaft, rotor, and handle — is 316 SS. A 0.75 kW / 1 HP 2-pole three-phase motor drives a vortex impeller through a shaft supported by long-life ball bearings.
Compared with the 0.5 HP 5.05, this pump delivers 470 L/min max flow at 14 m max head — 30% more flow and 47% more lift, at the same 2″ discharge and 35 mm free passage. The step-up sizing suits sumps and stations where the 5.05 is under-specified but the 45 mm free-passage 5.20 (2 HP) is bigger than the duty requires.
The 35 mm free passage vortex impeller is designed for non-clogging operation with medium-concentration wastewater. Combined with Viton gaskets, O-rings, lip seal, and cable gland throughout, the Stainox 5.10 handles environments that would rapidly corrode a cast iron pump — making it the workhorse choice for chemical, pharmaceutical, food-industry, marine, and treatment-plant duties. Three-phase 400V operation delivers smoother start-up, no starting capacitor, and simpler motor construction than single-phase — suits installations with dedicated 3-phase distribution and appropriately-rated motor starters. An SQS-50 series double mechanical seal — upper Ca/Ce, lower SiC/SiC by EKK Eagle Burgmann — runs in an oil chamber for reliability. Optional epoxy-based nano-coating and acid/alkali-resistant cable sleeve extend service life in the most aggressive environments.
Key features
Construction
Applications
Technical specifications
| Model | 50STEEL-5.10T |
| Series | Evak Stainox — Cast 316 SS submersible sewage |
| Voltage / phase | 400V three-phase |
| Motor output | 0.75 kW (1 HP) |
| Full load amps | 6 A |
| Frequency | 50 Hz |
| Poles / speed | 2 pole / 2850 rpm |
| Motor type | Dry type |
| Operation | Manual (no float-switch auto on 3-phase) |
| Discharge | 50 mm (2″) flange type |
| Rated head / flow | 9 m @ 250 L/min |
| Max head | 14 m |
| Max flow rate | 470 L/min |
| Free passage (solids) | 35 mm |
| Max liquid temperature | 40 °C (0–40 °C range) |
| Max submersion depth | 10 m |
| Insulation class | Class B |
| Protection | IP68 |
| Thermal protection | Klixon auto-cut |
| Bearings | Long-life ball type |
| Impeller | Vortex, AISI 316 stainless steel |
| Body construction | Loss-wax cast AISI 316 stainless steel throughout |
| Mechanical seal | SQS-50 double mechanical (upper Ca/Ce, lower SiC/SiC) — EKK Eagle Burgmann |
| Gaskets, O-rings, lip seal, cable gland | Viton (fluoroelastomer) |
| Cable | H07RN-F, 10 m standard |
| Dimensions (H × H1) | 475 × 352 mm |
| Weight (without cable) | 15.7 kg |
| Optional extras | Epoxy nano-coating · Acid/alkali-resistant cable sleeve · Quick Discharge Connection (QDC) · Stainox SQS Guiderail Kit |
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 Stainox 5.10 -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.