💪 Waterco Hydrostar Plus 12.50HP (9.5kW) 3 Phase Commercial Pump

🌊 Heavy-Duty Performance for Large Commercial Pools, Aquatic Centres & Water Parks

📋 Product Overview

The Waterco Hydrostar Plus 12.50HP is a powerhouse commercial pump engineered for the most demanding aquatic environments. Built with UV-stabilised glass-reinforced thermoplastic construction, this pump delivers exceptional flow rates up to 2,500 litres per minute whilst maintaining superior corrosion resistance that outlasts traditional steel alternatives.

Designed specifically for large commercial swimming pools, aquatic facilities, water parks, and high-volume circulation systems, the Hydrostar Plus combines industrial-grade reliability with intelligent energy efficiency. The 9.5kW three-phase motor delivers consistent performance whilst the heavy-duty IP55 weatherproofed construction ensures years of trouble-free operation in challenging commercial environments.

What sets the Hydrostar Plus apart is its unique thermoplastic construction—lighter than steel counterparts without sacrificing strength or durability, making installation significantly easier whilst eliminating the corrosion concerns that plague metal pumps in chemically-treated pool environments.

⭐ Key Features

✅ Heavy-Duty IP55 Weatherproofed Motor — Industrial-grade protection with 431 stainless steel shaft ensures reliable operation in exposed outdoor environments and harsh conditions

✅ UV-Stabilised Glass-Reinforced Thermoplastic Housing — Superior chemical and corrosion resistance compared to steel, withstands damage from pool treatment chemicals whilst maintaining structural integrity for years

✅ Extra-Large 16 Litre Strainer Basket — Massive debris capacity reduces cleaning frequency, ideal for high-traffic commercial facilities with extended operating hours

✅ Clear Polycarbonate Strainer Lid — Instant visual inspection of basket condition without system shutdown, saving valuable maintenance time in busy aquatic centres

✅ 6″ ANSI Flanged Suction Port & 4″ JIS Flanged Discharge Port — Industrial-grade connections designed for high-volume commercial plumbing systems

✅ Enclosed Glass-Filled Noryl Impeller — Engineered for long-lasting reliability and consistent hydraulic efficiency throughout the pump’s operational life

✅ High-Grade Carbon/Graphite Mechanical Seal — 316 stainless steel construction ensures leak-free operation and extended service intervals

✅ Dual Wintering Drain Plugs — Complete system drainage protection against freeze damage during shutdown periods

✅ Ergonomic Lock Ring with Quarter-Turn Lid — Easy-grip handles enable fast, tool-free access for routine maintenance

✅ Integral Support Base — Pre-engineered mounting points simplify installation on solid foundations

🔧 Technical Specifications

Specification	Details
Model	Hydrostar Plus 9.5kW
Pump Code	2461250
Motor Input Power	9.5 kW
Nominal Horsepower	12.50 HP (9.9 kW pump input)
Current Draw	17.7 Amps
Phase	3 Phase
Voltage	380-415V
Motor Speed	2960 RPM
Motor Frame	132
Pump Rating	IPX5
Suction Port	6″ ANSI Flanged (150mm)
Discharge Port	4″ JIS Flanged (100mm)
Total Length	1218 mm
Overall Height	530 mm
Overall Width	615 mm
Weight	91 kg
Operating Temperature	4°C to 40°C
Pump Body Material	Glass-Reinforced Polypropylene
Impeller Material	Glass-Filled Noryl
Strainer Basket	Polypropylene (16 litres)
Strainer Lid	Clear Polycarbonate
Seal Assembly	Carbon/Graphite with 316 SS
Motor Protection	IP55 Weatherproofed
Shaft Material	431 Stainless Steel

💰 Usage Costs & Running Expenses

Understanding operational costs is essential for commercial facility budgeting. Here’s a transparent breakdown of what to expect with the Hydrostar Plus 9.5kW pump.

📊 Annual Running Cost Calculation

Base Parameters:

• Motor Input Power: 9.5 kW
• UK Commercial Electricity Rate: £0.27 per kWh (November 2025 average)

🏢 Scenario 1: Large Commercial Pool — Standard Operation

Usage Profile:

• Operating Hours: 12 hours per day
• Operating Days: 365 days per year (year-round facility)
• Total Annual Hours: 4,380 hours

💵 Annual Running Cost:

9.5 kW × 4,380 hours × £0.27 = £11,234.70 per year

Monthly Average: £936.23

🎢 Scenario 2: Water Park — Peak Season Focus

Usage Profile:

• Operating Hours: 14 hours per day
• Operating Days: 180 days (April–September peak season)
• Total Annual Hours: 2,520 hours

💵 Annual Running Cost:

9.5 kW × 2,520 hours × £0.27 = £6,463.80 per year

Monthly Average (during operation): £1,077.30

🏊 Scenario 3: Municipal Leisure Centre — Extended Hours

Usage Profile:

• Operating Hours: 16 hours per day
• Operating Days: 340 days (closed Christmas period)
• Total Annual Hours: 5,440 hours

💵 Annual Running Cost:

9.5 kW × 5,440 hours × £0.27 = £13,953.60 per year

Monthly Average: £1,162.80

⚡ Three-Phase Efficiency Advantage

Three-phase motors like the Hydrostar Plus offer significant advantages over single-phase alternatives:

✅ 10-15% greater energy efficiency compared to equivalent single-phase motors ✅ Smoother power delivery reducing mechanical wear ✅ Lower operating temperatures extending motor lifespan ✅ Reduced current draw per phase for safer electrical installation

🎯 Real World Applications

🏊‍♂️ Olympic & Competition Pools

The Hydrostar Plus 9.5kW provides the high-volume circulation required for 50-metre competition pools. With flow rates capable of reaching 2,400+ litres per minute, it ensures rapid turnover times essential for maintaining water quality during intensive training sessions and competitive events.

🎢 Water Parks & Splash Facilities

Purpose-built for the demanding environment of water parks, where continuous operation during peak seasons is non-negotiable. The corrosion-resistant thermoplastic construction handles the aggressive chemical loads typical of high-bather-load attractions, whilst the oversized 16-litre strainer basket copes with increased debris from outdoor environments.

🏢 Hotel Resort Complexes

Ideal for large resort pool systems where reliability directly impacts guest satisfaction. The IP55 weatherproofed motor handles exposed plant room locations, whilst quiet operation (typically 74-78 dBA) minimises disturbance to nearby accommodation.

🏥 Hydrotherapy & Rehabilitation Centres

Medical facilities require pumps that deliver consistent, reliable performance. The Hydrostar Plus’s proven track record in commercial applications provides the dependability essential for therapeutic pool operations where system failures directly impact patient care schedules.

🔄 Retrofit & Upgrade Projects

Lighter than steel alternatives (91kg vs 120kg+ for comparable cast iron pumps), the Hydrostar Plus simplifies replacement installations where access is restricted. The standard 6″ ANSI/4″ JIS flange configuration matches most existing commercial plumbing arrangements.

💡 Cost Savings Examples

📍 Scenario: Upgrading from Oversized 15HP Single-Phase Pump

Many older commercial installations use oversized single-phase pumps running continuously at full speed. Here’s the potential saving:

❌ Old System: 15HP (11kW) Single-Phase Running 24/7

11 kW × 8,760 hours × £0.27 = £26,017.20 per year

✅ New Hydrostar Plus 9.5kW with Optimised Runtime (18 hours/day)

9.5 kW × 6,570 hours × £0.27 = £16,854.45 per year

💰 Annual Saving: £9,162.75 ⏱ Payback Period: Approximately 4.4 months (based on £3,322.80 purchase price)

📍 Scenario: Replacing Corroded Cast Iron Pump

Steel and cast iron pumps in chlorinated environments typically require replacement every 5-7 years due to corrosion. The thermoplastic Hydrostar Plus eliminates this concern:

❌ Cast Iron Pump Lifecycle Costs (10-year period):

• Initial pump: £3,500
• Replacement at year 5: £3,800
• Seal replacements (×4): £600
• Corrosion-related repairs: £1,200
• Total: £9,100

✅ Hydrostar Plus Lifecycle Costs (10-year period):

• Initial pump: £3,322.80
• Seal replacements (×3): £450
• Total: £3,772.80

💷 10-Year Saving: £5,327.20

📍 Scenario: Energy Cost Comparison vs Older Technology

Comparing against a typical 15-year-old commercial pump running at reduced efficiency (estimated 65% vs modern 85% efficiency):

To deliver equivalent hydraulic performance, an older pump consumes approximately 30% more energy:

❌ Older Inefficient Pump (equivalent output):

12.35 kW effective × 4,380 hours × £0.27 = £14,604.93 per year

✅ Hydrostar Plus 9.5kW:

9.5 kW × 4,380 hours × £0.27 = £11,234.70 per year

💵 Annual Saving: £3,370.23 📈 5-Year Saving: £16,851.15

📥 Downloads & Resources

📄 Commercial Pump Owners Manual — Complete installation, operation, and maintenance instructions covering the full Hydrostar Plus range

📄 Hydrostar Plus Technical Brochure — Detailed specifications, performance curves, dimensional drawings, and sound level data

🛒 Why Buy From Parts4Tubs?

✅ Specialist Commercial Pool Knowledge — Our team understands the unique requirements of commercial aquatic installations and can advise on optimal pump selection

✅ Competitive Pricing — Direct relationships with manufacturers mean genuine savings passed on to you

✅ UK Stock Availability — This pump is in stock and ready for immediate dispatch to minimise your facility downtime

✅ Technical Support — Access to knowledgeable staff who can assist with installation queries and troubleshooting

✅ Fast Delivery — Efficient dispatch to get your facility operational as quickly as possible

✅ Genuine Waterco Products — Authentic manufacturer-backed products with full warranty support

🏆 Why Choose the Hydrostar Plus 9.5kW?

✅ Proven Commercial Reliability — Waterco has been engineering commercial pumps since 1981, with installations operating successfully in over 40 countries worldwide

✅ Superior Corrosion Resistance — Thermoplastic construction eliminates the rust and chemical degradation that shortens the lifespan of steel alternatives

✅ Lower Lifetime Costs — Reduced maintenance requirements, longer service intervals, and extended operational life deliver genuine long-term value

✅ Easier Installation — At 91kg, significantly lighter than equivalent cast iron pumps, reducing handling requirements and installation time

✅ Comprehensive Warranty Coverage — 2-year warranty on wet ends and components, 1-year warranty on motor and mechanical seal for commercial applications

✅ Global Support Network — Waterco’s international presence ensures spare parts availability and technical support wherever you operate

✨ Summary

The Waterco Hydrostar Plus 12.50HP represents the pinnacle of commercial pool pump engineering—combining industrial-grade performance with innovative thermoplastic construction that outperforms traditional steel alternatives in every measurable way. Whether you’re operating a municipal leisure centre, water park, hotel resort, or competition facility, this pump delivers the high-volume circulation, chemical resistance, and long-term reliability that commercial operations demand.

With transparent running costs, proven energy efficiency, and a construction designed to resist the harsh realities of chemically-treated pool environments, the Hydrostar Plus is an investment in operational excellence that pays dividends throughout its extended service life.