💪 Waterco Hydrostar 7.00hp 3 Phase Pump Mk3

Maximum Commercial Power for Large-Scale Swimming Pools, Leisure Centres & Aquatic Facilities

📋 Product Overview

The Waterco Hydrostar 7.00hp 3 Phase Pump Mk3 represents the flagship of Waterco’s renowned Hydrostar commercial pump range, delivering uncompromising power and flow capacity for the most demanding large-scale aquatic installations. As the largest pump in the Mk3 series, this 7.00hp powerhouse provides the exceptional performance required for major leisure centres, competition pools, water parks, and high-volume commercial facilities.

Engineered from the ground up with Waterco’s revolutionary internal volute technology, the Mk3 series delivers dramatically improved hydraulic efficiency compared to previous generations. This innovative design creates naturally balanced water flow whilst significantly reducing turbulence and operational noise — a remarkable achievement for a pump of this power class. The result is substantially quieter operation combined with higher flow rates and head pressure than any previous Hydrostar model.

Built for continuous heavy-duty commercial operation, the Hydrostar 7.00hp features robust single-piece glass-filled thermoplastic construction that’s both UV stabilised and corrosion resistant. The premium 316 stainless steel mechanical seal confidently handles chlorinated water, saltwater, ozone, and alternative sanitisers. Whether you’re managing a busy municipal leisure centre, hotel resort complex, commercial water park, or competition-standard aquatic facility, the Hydrostar 7.00hp delivers the reliable, high-volume performance that critical infrastructure demands.

⭐ Key Features

✅ Powerful 7.00hp Three-Phase Motor — Delivers 5.18kW of efficient pumping power with 2900 RPM operation, providing exceptional water turnover capacity for large commercial installations

✅ Industry-Leading Flow Rate Performance — Achieves an impressive 70 m³/hr at 10 metres head, ensuring rapid and complete pool water circulation for the largest commercial pools

✅ Revolutionary Internal Volute Design — Completely redesigned Mk3 hydraulic system delivers naturally balanced water flow, dramatically reduced turbulence, and substantially quieter operation than previous generations

✅ Heavy-Duty 6L Hair & Lint Pot — Extra-large strainer basket with clear polycarbonate lid enables instant visual inspection, minimising maintenance downtime and ensuring uninterrupted high-volume filtration

✅ Innovative Quarter-Turn Lid Assembly — Easy-grip ergonomic handles allow tool-free rapid access for strainer basket maintenance, significantly reducing valuable plant room service time

✅ Premium 316 Stainless Steel Mechanical Seal — High-grade carbon/graphite seal with stainless steel spring assembly provides outstanding protection against chlorinated water, saltwater, ozone, bromine, iodine, and Baquacil

✅ IP55 Weather-Protected Motor — Heavy-duty fan-cooled motor with 431-grade stainless steel shaft and thermal overload protection for reliable outdoor or plant room installation

✅ 90mm (3″) Half Union Connections — Quick-connect barrel unions for seamless UPVC pipe integration, simplifying both installation and future maintenance requirements

✅ UV Stabilised & Corrosion Resistant Construction — Glass-filled Noryl impeller/diffuser and single-piece thermoplastic pump body withstand harsh pool chemical environments and prolonged UV exposure

✅ Self-Priming Capability — Eliminates manual priming requirements, ensuring reliable start-up every time and providing critical protection against dry-running damage

🔧 Technical Specifications

Specification	Details
Model	Hydrostar 700 Mk3
Product Code	14 97 241 070 / 240470033
Motor Power	7.00 HP (5.18 kW)
Phase	Three Phase
Voltage	380–420V
Frequency	50Hz
Current Draw	8.2 Amps
Motor Speed	2900 RPM
Flow Rate @ 10m Head	70 m³/hr
Maximum Flow Rate	~85 m³/hr
Strainer Capacity	6 Litres
Connections	90mm (3″) Half Unions
Motor Protection	IP55 Rated
Motor Frame	112mm
Shaft Material	431 Grade Stainless Steel
Mechanical Seal	316 Stainless Steel with Carbon/Graphite
Pump Body Material	UV Stabilised Glass-Filled Thermoplastic
Impeller/Diffuser	Glass-Filled Noryl
Total Length	939mm
Overall Dimensions (L × W × H)	940mm × 500mm × 330mm
Weight	51.5 kg
Maximum Water Temperature	40°C
Warranty	1 Year (Commercial Installations)

💰 Usage Costs & Running Expenses

Understanding your operational costs is essential for commercial pool management and budget planning. Here’s a comprehensive breakdown of the Hydrostar 7.00hp running costs based on current UK energy prices.

📊 Annual Running Cost Calculation

Key Parameters:

• Motor Power: 5.18 kW
• UK Commercial Electricity Rate: £0.27 per kWh (November 2025 average)

🏛️ Scenario 1: Major Leisure Centre / Municipal Pool (24-Hour Continuous Operation)

Large public swimming pools, major leisure centres, and municipal facilities typically require 24-hour continuous pump operation to meet health and safety turnover regulations for high-bather-load environments.

Parameter	Calculation
Daily Running Hours	24 hours
Days Per Year	365 days
Annual Running Hours	8,760 hours
Power Consumption	5.18 kW × 8,760 hrs = 45,377 kWh
✅ Annual Running Cost	45,377 kWh × £0.27 = £12,251.79

🏨 Scenario 2: Large Hotel / Resort Complex (16-Hour Extended Operation)

Large hotel main pools, resort complexes, and premium leisure facilities typically operate during extended guest hours with planned overnight shutdown periods.

Parameter	Calculation
Daily Running Hours	16 hours
Days Per Year	365 days
Annual Running Hours	5,840 hours
Power Consumption	5.18 kW × 5,840 hrs = 30,251 kWh
✅ Annual Running Cost	30,251 kWh × £0.27 = £8,167.77

🎢 Scenario 3: Water Park / Attraction Facility (Seasonal 8-Month Operation)

Outdoor water parks, attraction pools, and seasonal leisure facilities operating from April through November with extended daily hours during peak season.

Parameter	Calculation
Daily Running Hours	14 hours
Operating Season	243 days (8 months)
Annual Running Hours	3,402 hours
Power Consumption	5.18 kW × 3,402 hrs = 17,622 kWh
✅ Annual Running Cost	17,622 kWh × £0.27 = £4,757.94

🏅 Scenario 4: Competition Pool / Sports Centre (Year-Round Training Operation)

Olympic-standard and competition pools, university aquatic centres, and sports facilities with year-round training programmes but controlled operating hours.

Parameter	Calculation
Daily Running Hours	12 hours
Operating Days	340 days (allowing maintenance)
Annual Running Hours	4,080 hours
Power Consumption	5.18 kW × 4,080 hrs = 21,134 kWh
✅ Annual Running Cost	21,134 kWh × £0.27 = £5,706.18

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⚡ Energy Efficiency Advantage: Three-Phase vs Single-Phase

The Hydrostar 7.00hp utilises three-phase motor technology, delivering significant efficiency advantages over equivalent single-phase commercial pumps:

Comparison	Single-Phase Equivalent	Hydrostar 7.00hp 3-Phase
Typical Efficiency Loss	12-18% higher consumption	✅ Baseline
Estimated Power Draw	~5.96 kW	✅ 5.18 kW
Annual Cost (24hr operation)	£14,089.39	✅ £12,251.79
Annual Savings	❌ —	💷 £1,837.60

⚡ Three-phase motors deliver 10-15% greater efficiency, translating to substantial long-term savings for high-power commercial operations running continuous duty cycles.

🎯 Real World Examples & Applications

🏛️ Major Municipal Leisure Centres

The Hydrostar 7.00hp is purpose-built for large public swimming pools with volumes between 350,000 and 600,000+ litres. With an exceptional flow rate of 70 m³/hr at 10m head, it achieves:

• 350,000L Pool: Complete turnover in 5.0 hours (4.8 turnovers per 24 hours)
• 500,000L Pool: Complete turnover in 7.1 hours (3.4 turnovers per 24 hours)
• 600,000L Pool: Complete turnover in 8.6 hours (2.8 turnovers per 24 hours)

This comfortably exceeds UK and European health regulations requiring minimum 3-4 water turnovers daily for public pools, even at the largest facility sizes.

🏅 Competition & Olympic-Standard Pools

Ideal for 50-metre competition pools and Olympic-standard facilities where consistent water quality, rapid turnover, and reliable operation are essential for training programmes and competitive events. The high flow capacity ensures excellent water circulation throughout large pool volumes.

🎢 Water Parks & Major Attractions

The robust construction and exceptional flow capability make the Hydrostar 7.00hp the definitive choice for water park wave pools, major lazy river systems, large splash pad supply systems, and high-capacity attraction pool circulation where continuous heavy-duty operation is absolutely essential.

🏨 Large Hotel & Resort Complexes

Perfect for flagship hotel pools, integrated resort facilities, and luxury spa complexes where multiple large water features require high-volume, reliable circulation. The Mk3’s significantly quieter operation is particularly valuable in guest-facing premium environments.

🏊 University & Sports Centre Pools

Ideal for university aquatic centres, elite sports training facilities, and multi-use sports complexes where pools serve both recreational swimmers and competitive training programmes requiring consistent water quality.

🔄 Major Upgrade & Replacement Projects

The Hydrostar 7.00hp serves as the ideal replacement for aging high-capacity commercial pumps. The 90mm union connections provide compatibility with standard commercial pipework, while the dramatically improved hydraulic efficiency delivers immediate and substantial energy savings from installation.

💡 Cost Savings Examples

📍 Scenario: Upgrading from an Older 7HP Single-Phase Pump

Many commercial facilities continue operating legacy single-phase pumps with outdated motor technology and inferior hydraulic design.

Factor	Old Single-Phase Pump	Hydrostar 7.00hp 3-Phase
Estimated Power Draw	5.96 kW	✅ 5.18 kW
Annual Hours (24hr operation)	8,760 hrs	8,760 hrs
Annual Consumption	52,210 kWh	✅ 45,377 kWh
Annual Cost @ £0.27/kWh	❌ £14,096.70	✅ £12,251.79
Annual Saving	—	💰 £1,844.91

📈 5-Year Projected Savings: £9,224.55

⏱️ Payback Period: Energy savings alone can offset the pump investment within approximately 10-12 months for continuously operating facilities.

📍 Scenario: Right-Sizing from an Oversized 10HP Pump

Many commercial installations operate significantly oversized pumps, wasting considerable energy without meaningful performance benefit.

Factor	Oversized 10HP Pump	Right-Sized Hydrostar 7.00hp
Typical Power Draw	7.5 kW	✅ 5.18 kW
Annual Hours (16hr hotel operation)	5,840 hrs	5,840 hrs
Annual Consumption	43,800 kWh	✅ 30,251 kWh
Annual Cost @ £0.27/kWh	❌ £11,826.00	✅ £8,167.77
Annual Saving	—	💷 £3,658.23

📈 10-Year Projected Savings: £36,582.30

Right-sizing your pump selection delivers both significant capital savings on the initial purchase and substantial ongoing operational cost reductions that compound dramatically over time.

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📍 Scenario: Comparison vs Competitor Commercial Pump

Comparing the Hydrostar 7.00hp against a typical competitor pump with similar power specifications but standard hydraulic design.

Factor	Competitor 7HP Pump	Waterco Hydrostar 7.00hp
Rated Power	5.5 kW	✅ 5.18 kW
Flow Rate @ 10m	~62 m³/hr	✅ 70 m³/hr
Efficiency Rating	Standard	✅ Enhanced Volute Design
Annual Cost (24hr @ £0.27)	❌ £13,003.20	✅ £12,251.79
Annual Saving	—	💵 £751.41
Flow Performance Advantage	—	✅ +12.9% Flow Rate

The Hydrostar delivers nearly 13% greater flow whilst consuming 6% less energy — a compelling efficiency advantage that compounds significantly over the pump’s operational lifetime.

📥 Downloads & Resources

📄 Waterco Pumps Brochure — Complete Hydrostar Mk3 series specifications, performance flow curves, and dimensional drawings

🏆 Why Choose the Waterco Hydrostar 7.00hp?

✅ Maximum Commercial Power — The flagship of the Hydrostar Mk3 range delivers the exceptional flow capacity required for the largest and most demanding commercial installations

✅ Proven Commercial Reliability — Waterco’s established reputation for building robust, long-lasting commercial pool equipment is backed by decades of industry experience worldwide

✅ Substantially Quieter Operation — The completely redesigned Mk3 internal volute delivers significantly quieter running than previous Hydrostar models — remarkable for a pump of this power class

✅ Superior Corrosion Resistance — 316 stainless steel mechanical seal confidently handles chlorinated water, saltwater, ozone, bromine, iodine, and alternative sanitisers without degradation

✅ Reduced Maintenance Downtime — Quarter-turn lid with easy-grip ergonomic handles and clear inspection window enables faster strainer basket cleaning with minimal plant room time

✅ Three-Phase Efficiency — Inherently more efficient motor technology delivers measurable, ongoing energy savings compared to single-phase alternatives

✅ Industry-Leading Flow Performance — 70 m³/hr at 10m head provides exceptional turnover rates for even the largest commercial pool volumes

✅ Comprehensive Warranty — 1-year warranty for commercial installations provides peace of mind for your major facility investment

🛒 Why Buy From Parts4Tubs?

✅ Competitive Pricing — Trade-level prices on genuine Waterco commercial equipment without compromising on quality or service

✅ UK Stock Availability — Products held in UK stock for rapid despatch, minimising critical downtime for your commercial operation

✅ Expert Technical Support — Knowledgeable team available to assist with product selection, specifications, and application advice for major installations

✅ Trusted Supplier — Established reputation serving commercial pool operators, contractors, and facilities managers across the United Kingdom

✅ Fast, Secure Delivery — Reliable nationwide delivery with full tracking and secure packaging for heavy commercial equipment

✅ Trade Account Options — Flexible account facilities available for commercial customers with regular purchasing requirements

✨ Summary

The Waterco Hydrostar 7.00hp 3 Phase Pump Mk3 stands as the ultimate choice for facilities managers and pool operators demanding maximum commercial power combined with outstanding efficiency. As the flagship of the Hydrostar Mk3 range, this pump delivers exceptional 70 m³/hr flow capacity whilst maintaining the energy-conscious operation that modern commercial facilities require.

With its revolutionary internal volute design, premium construction materials, and efficient three-phase motor technology, the Hydrostar 7.00hp provides the reliable, high-volume performance essential for major leisure centres, competition pools, water parks, and large-scale commercial aquatic facilities — all while delivering meaningful operational cost savings year after year.

When maximum performance matters, choose the Waterco Hydrostar 7.00hp Mk3.