🚰 SUB-4 DAB VERTY NOVA 400 Submersible Pump | Built-in Float Switch | 1.25″ Outlet

💧 The Space-Saving Drainage Solution That Works Automatically in the Tightest Spaces

📋 Product Overview

The SUB-4 DAB VERTY NOVA 400 is a premium compact submersible pump engineered by DAB Pumps for efficient water drainage in confined spaces. Featuring a revolutionary built-in float switch and vertical delivery design, this pump fits into sump pits as small as 20cm x 20cm whilst delivering impressive performance up to 10m³/h flow rate with heads up to 9 metres.

Built with a rugged AISI 304 stainless steel motor casing and high-grade technopolymer components, the VERTY NOVA 400 handles dirty water containing solid particles up to 5mm diameter. The integrated automatic operation eliminates external float installations, whilst manual mode allows drainage down to just 2-3mm residual water level. Whether you’re protecting a basement from flooding, emptying a swimming pool, or managing water in excavations, this pump delivers DAB’s renowned reliability in the most demanding drainage scenarios.

⭐ Key Features

✅ Integrated Float Switch System – Built-in automatic operation starts and stops the pump based on water levels, eliminating external float installations and simplifying setup

✅ Ultra-Compact Design (20cm x 20cm Fit) – Vertical delivery configuration engineered specifically for narrow sump pits and confined drainage spaces where traditional pumps cannot operate

✅ Powerful 400W Motor Performance – 0.4kW nominal power (0.55 HP) delivers flow rates up to 10m³/h with maximum head of 9 metres for demanding applications

✅ Near-Complete Drainage Capability – Manual mode allows pumping down to 2-3mm water level, ensuring virtually complete water removal from flooded areas

✅ Dirty Water Handling (5mm Solids) – Pumps water containing solid particles up to 5mm diameter without clogging, suitable for floodwater, pool emptying, and excavation drainage

✅ Premium Stainless Steel Construction – AISI 304 stainless steel motor casing and rotor shaft with AISI 416 stainless steel components for maximum corrosion resistance and longevity

✅ Automatic Thermal Protection – Built-in thermal-amperometric safety device prevents motor damage from overheating with automatic restart after 15-20 minute cool-down

✅ Dual Operation Modes – Easy selector switch between Automatic (A), Manual (M), and Off (O) positions with accessible float chamber for maintenance

✅ 7-Metre Maximum Immersion Depth – Deep submersion capability for use in tanks, rivers, swimming pools, and deep excavations

✅ 10-Metre Factory-Fitted Cable – Extended power cable included for flexible installation without extension requirements

🔧 Technical Specifications

Specification	Value
Model Number	SUB-4 / VERTY NOVA 400 M
Manufacturer	DAB Pumps
Power Supply	1 x 230V ~ 50Hz
Power Input (P1 Max)	0.6 kW (600W)
Nominal Power (P2)	0.4 kW (0.55 HP)
Current Draw	2.6 A
Maximum Flow Rate	10 m³/h (166 litres/min)
Maximum Head	9 metres
Outlet Size	1.25″ (DN 32mm)
Float Switch	Built-in integrated
Minimum Pit Size	20 cm x 20 cm
Minimum Suction Level	2-3 mm (manual mode)
Maximum Immersion Depth	7 metres
Maximum Liquid Temperature	35°C
Maximum Particle Size	5 mm diameter
Cable Length	10 metres
Pump Body Material	Technopolymer
Motor Casing	AISI 304 Stainless Steel
Rotor Shaft	AISI 416 Stainless Steel
Impeller Material	Technopolymer
Seals	NBR (Nitrile Rubber)
Protection	Thermal-amperometric
Dimensions (A x B x C)	158 x 225 x 200 mm
Height (H)	354 mm
Weight	5.1 kg

💰 Usage Costs & Running Expenses

Understanding the true cost of operation helps you make an informed decision. The SUB-4 VERTY NOVA 400 is designed for energy-efficient drainage with minimal running costs.

📊 Annual Running Cost Calculation

Current UK Electricity Rate (Q4 2025): £0.2635 per kWh

Power Consumption: 0.6 kW maximum input

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🏠 Scenario 1: Residential Basement Protection (Seasonal Use)

For a basement sump pump providing flood protection during wet months:

• ⚡ Power: 0.6 kW
• 🕐 Usage: 30 minutes/day average × 180 days (autumn/winter/spring)
• ⏱️ Annual hours: 90 hours
• 💷 Annual cost: 0.6 kW × 90 hours × £0.2635 = £14.23 per year

That’s less than £1.20 per month for complete peace of mind against basement flooding!

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🏊 Scenario 2: Pool/Spa Drainage (Periodic Use)

For emptying swimming pools, hot tubs, or water features:

• ⚡ Power: 0.6 kW
• 🕐 Usage: Approximately 20 hours per year (seasonal maintenance)
• 💷 Annual cost: 0.6 kW × 20 hours × £0.2635 = £3.16 per year

Complete pool drainage costs less than a single cup of coffee per year!

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🏢 Scenario 3: Commercial/Light Industrial (Regular Use)

For garages, workshops, or commercial premises with regular drainage needs:

• ⚡ Power: 0.6 kW
• 🕐 Usage: 2 hours/day × 250 working days
• ⏱️ Annual hours: 500 hours
• 💷 Annual cost: 0.6 kW × 500 hours × £0.2635 = £79.05 per year

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📈 Cost Comparison vs Larger Pumps

Pump Type	Power	Annual Hours	Annual Cost	Difference
❌ Standard 1.1kW Sump Pump	1.1 kW	90 hrs	£26.09	+83% more
❌ Heavy-Duty 1.5kW Unit	1.5 kW	90 hrs	£35.57	+150% more
✅ DAB VERTY NOVA 400	0.6 kW	90 hrs	£14.23	Baseline

💵 Potential savings of £11.86 – £21.34 per year compared to oversized alternatives!

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🎯 Real World Examples & Applications

The SUB-4 VERTY NOVA 400’s unique combination of compact design, automatic operation, and powerful performance makes it ideal for diverse scenarios:

🏠 Basement & Cellar Flood Protection

The primary application for this pump – protecting below-ground spaces from water ingress. The built-in float switch activates automatically when water levels rise, pumping out up to 10,000 litres per hour. Perfect for properties in flood-prone areas or those with high water tables.

🚗 Garage & Workshop Drainage

Many garages sit below street level or collect rainwater runoff. The VERTY NOVA 400 fits in a small corner sump pit and keeps your workshop dry without constant supervision. The 7-metre immersion depth handles deep collection pits with ease.

🏊‍♂ Swimming Pool & Hot Tub Emptying

Need to drain your pool for maintenance, winterisation, or repairs? This pump delivers 166 litres per minute and operates down to just 2-3mm depth in manual mode, removing virtually all water. The 5mm particle handling copes with leaves and debris that accumulate in pool water.

🌊 Pond & Water Feature Maintenance

Empty decorative ponds for cleaning, liner repairs, or fish treatment. The compact design means you can position the pump precisely where needed, even in ornamental pond sumps with limited access.

🏗️ Construction & Excavation Dewatering

Groundwork and construction projects often encounter groundwater infiltration. The portable VERTY NOVA 400 provides emergency or ongoing dewatering, handling muddy water with particles up to 5mm diameter.

🚰 Rainwater Harvesting Tank Overflow

Prevent overflow from underground rainwater storage tanks by installing the SUB-4 as an automatic overflow pump. The float switch activates only when water reaches trigger level, protecting your garden and property.

⛲ Fountain & Feature Emergency Drainage

When water features develop leaks or require urgent maintenance, the near-complete drainage capability ensures you can access the base for repairs quickly.

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💡 Cost Savings Examples

📍 Scenario: Upgrading from a Basic 1.1kW Sump Pump

Many older or basic sump pumps draw significantly more power than necessary for residential applications:

Factor	❌ Old 1.1kW Pump	✅ DAB VERTY NOVA 400
Power Input	1.1 kW	0.6 kW
Annual Usage	90 hours	90 hours
Energy Consumed	99 kWh	54 kWh
Annual Cost @ £0.2635/kWh	£26.09	£14.23
Annual Saving	—	💰 £11.86

📈 5-Year Projection: Save approximately £59.30 in electricity costs alone!

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📍 Scenario: Commercial Property with Higher Usage

For a commercial basement requiring 500 hours of annual pump operation:

Factor	❌ Standard 1.5kW Pump	✅ DAB VERTY NOVA 400
Power Input	1.5 kW	0.6 kW
Annual Usage	500 hours	500 hours
Energy Consumed	750 kWh	300 kWh
Annual Cost @ £0.2635/kWh	£197.63	£79.05
Annual Saving	—	💰 £118.58

📈 Over 10 years: Total savings of approximately £1,185.80!

⏱️ Payback Period: With energy savings alone contributing over £100 annually, the pump essentially pays for itself within the first few years of commercial use.

📍 Scenario: Avoiding External Float Switch Costs

Traditional submersible pumps require separate float switch installation:

Component	❌ Separate Float System	✅ DAB VERTY NOVA 400
Pump Cost	£150-200	All-inclusive
External Float Switch	£25-50	Built-in
Installation Complexity	Higher	Minimal
Potential Failure Points	Multiple	Single unit
Total System Savings	—	💰 £25-50+

The integrated float design eliminates a common failure point whilst reducing upfront costs!

📥 Downloads & Resources

Access complete technical documentation for the SUB-4 DAB VERTY NOVA 400:

📄 Installation & Maintenance Manual – Comprehensive multi-language installation guide with safety instructions, troubleshooting, and maintenance procedures (PDF)

📄 Product Leaflet & Technical Datasheet – Complete specifications, performance curves, dimensional drawings, and materials information (PDF)

🛒 Why Buy From Parts4Tubs?

✅ Genuine DAB Products – We supply authentic manufacturer stock with full warranty protection and traceability

✅ Expert Technical Support – Our team understands pump applications and can advise on the right solution for your specific needs

✅ Fast UK Delivery – In-stock items dispatched promptly for quick delivery to your door

✅ Competitive Pricing – Trade and retail customers benefit from our excellent value on quality water management equipment

✅ Complete Documentation – All technical manuals, datasheets, and installation guides provided for professional installation

✅ Trusted Supplier – Years of experience supplying pool, spa, and water management professionals across the UK

🏆 Why Choose the SUB-4 DAB VERTY NOVA 400?

✅ Space-Efficient Design – Fits sump pits as small as 20cm × 20cm where conventional pumps simply won’t work

✅ Set-and-Forget Operation – Built-in float switch provides fully automatic water level management without external controls

✅ Energy Efficient – 0.6kW power consumption delivers significant savings compared to oversized alternatives

✅ DAB Quality Assurance – Backed by one of Europe’s leading pump manufacturers with decades of engineering excellence

✅ Versatile Application – From basement protection to pool drainage, one pump handles multiple water management tasks

✅ Professional-Grade Construction – Stainless steel motor components and premium seals ensure years of reliable service

✅ Low Maintenance Design – Integrated float chamber with easy access for inspection and cleaning reduces servicing requirements

✅ Complete Package – 10-metre cable, full documentation, and everything needed for immediate installation included

✨ Summary

The SUB-4 DAB VERTY NOVA 400 represents the ideal solution for anyone needing reliable, automatic water drainage in confined spaces. Combining DAB’s renowned pump engineering with a space-saving vertical design, built-in float automation, and impressive 10m³/h flow capability, this pump delivers professional performance at remarkably low running costs. Whether protecting your basement from flooding, maintaining swimming pools, or managing water in commercial premises, the VERTY NOVA 400 provides peace of mind through intelligent, energy-efficient automatic operation. With its stainless steel construction, thermal protection, and near-complete drainage capability down to 2-3mm, this is a pump built to perform reliably for years to come.