💧 Vipool MJB 0.5HP Pool Pump – Single Phase | 600112-2

French-Engineered Precision for Reliable Pool Filtration – Direct Hydroswim HGS Replacement

📋 Product Overview

The Vipool MJB 0.5HP Single Phase Pool Pump represents French engineering excellence, delivering dependable water circulation for small to medium residential pools. Manufactured by ACIS Group, a company with nearly three decades of pool filtration expertise, this pump combines robust construction with innovative features that set it apart from ordinary alternatives.

Designed as a direct drop-in replacement for the popular Hydroswim HGS series, the MJB eliminates compatibility concerns while offering enhanced durability through its resin-encapsulated motor and one-piece composite body. The patented strainer basket system provides superior debris filtration, protecting your pump mechanics and extending operational life. Whether you’re upgrading an aging system or equipping a new pool installation, the Vipool MJB 0.5HP delivers consistent 6m³/hr flow rates with whisper-quiet operation and impressive energy efficiency – consuming just 0.37kW during operation.

⭐ Key Features

✅ One-Piece Body Construction – Monobloc composite design eliminates weak joints and potential leak points, ensuring long-term structural integrity

✅ Resin-Encapsulated Motor – Full motor encapsulation provides total humidity resistance, protecting electrical components from moisture damage even in harsh pool environments

✅ IP55 Class F Motor Protection – Industrial-grade ingress protection rated for continuous duty operation, safeguarding against dust and water jets from any direction

✅ Patented Strainer Basket Design – Innovative flexible pocket filter system captures fine debris including sand, pine needles, and micro-particles that would damage conventional pumps

✅ Quick-Release Transparent Lid – Fast-opening translucent cover allows visual inspection of the prefilter without tools, making maintenance simple and efficient

✅ 316L Stainless Steel Shaft – Marine-grade stainless steel motor shaft embedded within the impeller prevents water contact and eliminates corrosion concerns

✅ Salt Water Compatible – Engineered for use with fresh water, sea water, treated water, and salt-chlorinated pools without degradation

✅ Self-Priming Capability – Reliable automatic priming up to 1.5m suction height ensures consistent startup performance

✅ 1.5″ Union Connections – Standard plumbing compatibility with included unions for straightforward professional installation

✅ Ultra-Quiet Operation – High hydraulic efficiency and balanced design minimise operational noise for peaceful poolside enjoyment

🔧 Technical Specifications

Specification	Detail
Model	MJB 6M (MJB50M)
Product Code	600112-2
Power Output	0.5 HP (0.37 kW)
Phase	Single Phase (230V / 50Hz)
Flow Rate at 10m Head	6 m³/hr
Maximum Flow Rate	7.7 m³/hr (at 4m head)
Motor Class	IP55 – Class F – Continuous Rating
Connection Size	1.5″ unions (included)
Shaft Material	316L Stainless Steel
Impeller Material	Noryl (Glass-Reinforced Polymer)
Body Material	Glass-Fibre Reinforced Polypropylene
Salt Water Compatible	Yes
Self-Priming Suction	Up to 1.5m
Water Temperature Range	+5°C to +50°C
Ambient Temperature	Up to 40°C
Motor Protection	Thermal protection with automatic re-start
Manufacturer	ACIS Group / Vipool (France)
Country of Origin	France 🇫🇷

💰 Usage Costs & Running Expenses

Understanding your pump’s operational costs helps you budget effectively and appreciate the efficiency of modern pool equipment. The Vipool MJB 0.5HP is engineered for economical operation whilst delivering reliable performance.

📊 Annual Running Cost Calculation

Power consumption: 0.37 kW
UK electricity rate: £0.26 per kWh (Ofgem Q4 2025 price cap average)

🏊 Scenario 1: Seasonal Residential Use (UK Summer)

Typical UK pool operation: 8 hours daily for 180 days (April – September)

Calculation Component	Value
Daily operation	8 hours
Season length	180 days
Total annual hours	1,440 hours
Power consumption	0.37 kW
Energy used per year	532.8 kWh
✅ Annual running cost	£138.53

Daily cost: £0.77 | Monthly cost (peak season): £23.09

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☀️ Scenario 2: Extended Season Use

Running 10 hours daily for 210 days (March – October)

Calculation Component	Value
Daily operation	10 hours
Season length	210 days
Total annual hours	2,100 hours
Power consumption	0.37 kW
Energy used per year	777 kWh
✅ Annual running cost	£202.02

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🔥 Scenario 3: Year-Round Indoor/Heated Pool

Running 6 hours daily for 365 days

Calculation Component	Value
Daily operation	6 hours
Days per year	365 days
Total annual hours	2,190 hours
Power consumption	0.37 kW
Energy used per year	810.3 kWh
✅ Annual running cost	£210.68

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⚡ Energy Efficiency Comparison

The Vipool MJB’s 0.37 kW power consumption demonstrates exceptional efficiency for a 0.5HP pump. Modern efficient pumps convert more electrical energy into water movement rather than wasting it as heat and noise.

Pump Type	Typical Power Draw	Annual Cost (1,440 hrs)	Difference
✅ Vipool MJB 0.5HP	0.37 kW	£138.53	—
❌ Older Single-Speed 0.5HP	0.50 kW	£187.20	+£48.67/year
❌ Inefficient Budget Pump	0.65 kW	£243.36	+£104.83/year

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🎯 Real World Applications

🏊‍♂️ Small to Medium Residential Pools (Up to 30m³)

The 6m³/hr flow rate provides excellent turnover for pools up to 30,000 litres. For a typical 25m³ garden pool, the MJB 0.5HP achieves complete water turnover in approximately 4-5 hours – well within recommended daily filtration cycles.

Ideal for: Above-ground pools, smaller in-ground installations, holiday home pools

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🧂 Salt Water & Chlorinated Pool Systems

Full compatibility with salt chlorination systems makes this pump perfect for modern sanitisation setups. The 316L stainless steel shaft and corrosion-resistant composite construction withstand the demands of salt-treated water without degradation.

Ideal for: Salt chlorinator installations, automated chemical treatment systems

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🔄 Direct Hydroswim HGS Replacement

Engineered with identical dimensions and connection specifications to the Hydroswim HGS series, the Vipool MJB slots directly into existing installations. No plumbing modifications required – simply disconnect the old pump and connect the new one.

Ideal for: Upgrading failed Hydroswim pumps, like-for-like replacements, maintenance swaps

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🌊 Water Features & Circulation Systems

Beyond primary filtration, the reliable flow characteristics make this pump suitable for powering garden water features, ornamental ponds with filtration requirements, and auxiliary circulation duties.

Ideal for: Garden fountains, koi pond filtration, decorative water features

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🏠 Secondary/Backup Pump Applications

Many pool owners maintain a backup pump for emergencies. The MJB’s competitive pricing and proven reliability make it an excellent secondary unit to keep on hand during the swimming season.

Ideal for: Emergency backup, rental property pools, maintenance contractors

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💡 Cost Savings Examples

📍 Scenario: Replacing an Ageing Hydroswim HGS

If your existing Hydroswim HGS has become noisy, inefficient, or unreliable, upgrading to a new Vipool MJB restores optimal performance whilst maintaining compatibility.

Factor	Old Worn Pump	New Vipool MJB
Estimated power draw	~0.55 kW (degraded efficiency)	0.37 kW
Annual energy (1,440 hrs)	792 kWh	532.8 kWh
❌ Old annual cost	£205.92	—
✅ New annual cost	—	£138.53
💰 Annual savings	—	£67.39

📈 5-Year Projection: £336.95 in energy savings alone, plus avoided repair costs and improved reliability.

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📍 Scenario: Upgrading from a Budget 0.75HP Pump

Many pool owners discover they’ve been running an oversized pump. If your pool only requires 6m³/hr flow, downsizing from a 0.75HP to an efficient 0.5HP reduces costs significantly.

Factor	0.75HP Budget Pump	Vipool MJB 0.5HP
Power consumption	0.55 kW	0.37 kW
Annual energy (1,440 hrs)	792 kWh	532.8 kWh
❌ Previous annual cost	£205.92	—
✅ New annual cost	—	£138.53
💰 Annual savings	—	£67.39

📍 Scenario: New Pool Installation – Choosing Wisely

Selecting the right pump initially prevents costly upgrades later. The Vipool MJB’s French engineering quality and 5-year motor warranty mean lower total cost of ownership.

Investment calculation for a 10-year period:

Cost Element	Budget Pump (replaced twice)	Vipool MJB (one replacement)
Initial purchase	£180	£285
Replacement(s)	£360 (2 × £180)	£285 (1 × £285)
Energy (10 years × £187/yr)	£1,870	—
Energy (10 years × £139/yr)	—	£1,390
Total 10-year cost	£2,410	£1,960
💰 Lifetime savings	—	£450

🏆 Why Choose This Product

✅ French Manufacturing Quality – Built by ACIS Group with nearly 30 years of pool filtration expertise, every Vipool pump undergoes electronic and hydraulic testing before packaging

✅ Genuine Hydroswim Replacement – Identical dimensions and specifications to the HGS series eliminates installation guesswork – a true plug-and-play upgrade

✅ Extended Motor Warranty – 5-year warranty on the resin-encapsulated motor demonstrates manufacturer confidence in long-term reliability

✅ Energy Efficient Design – At just 0.37 kW, operating costs remain manageable without sacrificing the performance your pool requires

✅ Salt Water Ready – No restrictions on water type – works equally well with fresh water, treated water, or salt-chlorinated systems

✅ Professional-Grade Construction – IP55 rated motor, 316L stainless steel shaft, and glass-reinforced composite body built for years of trouble-free service

🛒 Why Buy From Parts4Tubs?

🚚 Fast UK Delivery – Stock held in the UK for rapid despatch to your door

💬 Expert Technical Support – Our team understands pool equipment and can help with any installation or compatibility questions

💯 Genuine Products Only – Authorised supplier of authentic Vipool pumps with full manufacturer warranty support

🔧 Comprehensive Spares Availability – Should you ever need replacement seals, baskets, or components, we stock the full MJB spare parts range

⭐ Trusted Pool & Spa Specialists – Serving UK pool owners with quality equipment and honest advice since establishment

✨ Summary

The Vipool MJB 0.5HP Single Phase Pool Pump delivers the perfect balance of French engineering quality, energy efficiency, and practical value for small to medium pool installations. As a direct replacement for the established Hydroswim HGS series, it eliminates compatibility concerns whilst providing modern features including the patented flexible pocket filter, resin-encapsulated motor, and salt water capability. With annual running costs of approximately £139 for typical seasonal use and a 5-year motor warranty, the MJB represents a sound long-term investment in reliable pool filtration.