💧 Sta-Rite SR100N | 1HP (0.75kW) Single-Phase Pool Pump – 1.5″ Connections

Professional-Grade Reliability for Residential & Domestic Swimming Pools

📋 Product Overview

The Sta-Rite 5P2R Series SR100N represents the industry standard for residential pool circulation. This 1HP (0.75kW) single-phase pump combines Pentair’s proven engineering heritage with modern energy-efficient motor technology to deliver dependable performance for domestic swimming pools up to 80m³. Manufactured in Pentair’s Pisa, Italy facility, this pump features reinforced thermoplastic construction, high-grade stainless steel components, and precision-moulded impellers designed for smooth water flow and extended service life.

The SR100N is engineered specifically for homeowners who demand professional-quality equipment without commercial-scale complexity. Its self-priming design, easily accessible maintenance points, and robust single-phase motor make it an ideal choice for residential pool installations where reliability, efficiency, and straightforward operation are paramount.

⭐ Key Features

✅ Self-Priming Diffuser Design – Ensures quick start-up and reliable operation even with slight air leaks, reducing installation challenges and improving system reliability

✅ Reinforced Thermoplastic Body – Precision-moulded from glass-filled materials providing exceptional resistance to pool chemicals, UV degradation, and temperature extremes while remaining lightweight

✅ High-Grade Stainless Steel Components – Motor shaft and internal components constructed from corrosion-resistant stainless steel for extended lifespan in harsh pool environments

✅ Large 5″ Lock-In Basket – Oversized strainer basket with see-through lid captures more debris between cleanings and withstands 4 bar test pressure

✅ Precision-Moulded Impeller – Glass-filled polycarbonate impeller with smooth water passages delivers 16m³/h flow at 8 meters head, optimising circulation efficiency

✅ Advanced Mechanical Seal – Carbon ceramic stainless steel seal is precision-lapped and highly polished for maximum drip-proof protection and extended service intervals

✅ Tool-Free Maintenance Access – Stainless steel pump clamp allows quick removal for easy access to all serviceable components without specialised tools

✅ Hi-Rise Mounting Base – Elevated design provides installation stability and facilitates plumbing connections while protecting motor from ground moisture

✅ Sealed Bearings – Permanently lubricated, sealed SKF bearings eliminate maintenance requirements and ensure smooth, quiet operation throughout the pump’s lifespan

✅ Thermal Protection – Built-in motor protection prevents damage from overheating, extending equipment life and providing peace of mind during extended operation

🔧 Technical Specifications

Specification	Detail
Model Number	SR100N (P-STR-101)
Motor Power	1HP (0.75kW) Output
Phase	Single-Phase (1~)
Voltage	220-240V, 50Hz
Flow Rate	16m³/h @ 8 meters head
Suction Port	1.5″ BSP Thread
Discharge Port	1.5″ BSP Thread
Union Size	50mm Internal Diameter
Unions Included	Yes (both suction & discharge)
Strainer Basket Size	5″ (127mm) Lock-In Design
Body Material	Reinforced Fiberglass Thermoplastic
Impeller Material	Glass-Filled Polycarbonate
Motor Shaft	High-Grade Stainless Steel (AISI 304)
Mechanical Seal	Carbon Ceramic Stainless Steel
Bearings	SKF Sealed, Permanently Lubricated
Maximum Pressure	4 Bar Test Pressure
Protection Rating	IP-X5
Thermal Protection	Built-In
Maximum Lift	2.5 Meters
Priming Time	Approximately 5 Minutes (Typical)
Dimensions (L × W × H)	514mm × 288mm × 227mm
Weight	15.8kg
Salt Tolerance	0.40% (4g/L) Maximum
Manufacturing Origin	Pentair Pisa Facility, Italy
Suitable Pool Volume	30-80m³ (Residential)
Compliance	CE, RoHS, Low Voltage Directive 2014/35/EU, EMC Directive 2014/30/EU

💰 Usage Costs & Running Expenses

📊 Annual Running Cost Calculation

Power Consumption: 0.75kW (motor output)
Typical Motor Input: ~0.95kW (accounting for motor efficiency)
UK Residential Electricity Rate: £0.26 per kWh (November 2024 average)

🏊 Scenario 1: Standard Seasonal Use

• Usage Pattern: 8 hours/day during swim season (May-September = 153 days)
• Annual Hours: 8 × 153 = 1,224 hours
• ✅ Annual Cost: 0.95kW × 1,224 hours × £0.26 = £302
• Monthly Cost (During Season): £302 ÷ 5 = £60.40/month

🌊 Scenario 2: Extended Season with Heating

• Usage Pattern: 8 hours/day for 8 months (April-November = 244 days)
• Annual Hours: 8 × 244 = 1,952 hours
• ✅ Annual Cost: 0.95kW × 1,952 hours × £0.26 = £482
• Monthly Cost (During Season): £482 ÷ 8 = £60.25/month

☀ Scenario 3: Year-Round Pool Operation

• Usage Pattern: 6 hours/day year-round (365 days)
• Annual Hours: 6 × 365 = 2,190 hours
• ✅ Annual Cost: 0.95kW × 2,190 hours × £0.26 = £541
• Monthly Cost: £541 ÷ 12 = £45.08/month

💡 Cost Comparison: Upgrading from Older Pump

Many residential pools still operate older, less efficient circulation pumps. Here’s what upgrading to the SR100N could save:

❌ Older 1.5HP Pump (Typical 1.3kW Motor Input)

• Running 8 hours/day for 5 months: 1.3kW × 1,224 hours × £0.26 = £414/year

✅ New SR100N Pump (0.95kW Motor Input)

• Same usage pattern: 0.95kW × 1,224 hours × £0.26 = £302/year

💷 Annual Saving: £112
⏱ Payback Period: Approximately 2-3 years (depending on installation costs)
📈 5-Year Saving: £560 (assuming stable energy prices)

🎯 Real World Examples & Applications

🏊‍♂️ Residential Outdoor Pools

Perfect for family swimming pools between 30-80m³ (approximately 8m × 4m × 1.5m depth). The SR100N provides complete turnover circulation in 2-5 hours depending on pool volume, meeting recommended filtration standards for domestic installations. Self-priming design handles typical garden installations where pump is positioned up to 2.5m above water level.

🏠 New Build Pool Installations

Ideal choice for new residential pool projects where reliable, code-compliant equipment is essential. The pump’s 1.5″ BSP connections integrate seamlessly with standard UK pool plumbing, while included unions simplify installation and future maintenance. Thermal protection and sealed bearings ensure trouble-free operation for new homeowners.

🔄 Retrofit & Upgrade Projects

Excellent replacement for aging circulation pumps on existing pools. Direct 1.5″ connection compatibility eliminates plumbing modifications in most cases. Stainless steel clamp and accessible design reduce maintenance time compared to older pump technologies. Improved motor efficiency delivers immediate energy savings.

🌳 Semi-Rural Installations

Well-suited for properties where pump must handle longer pipe runs or overcome elevation changes. High-head impeller design maintains strong flow even with increased system resistance. Self-priming capability tolerates minor air ingress that can occur with extended underground plumbing.

☀ Seasonal Pool Operations

Designed for easy winterisation with full drainage capability. Removable strainer basket stores drain plugs during winter months. Thermoplastic construction resists frost damage if properly drained. Simple restart procedure in spring requires only refilling and priming – no special commissioning needed.

💡 Cost Savings Examples

📍 Scenario: Replacing 15-Year-Old Pump

Old Pump Characteristics:

• ❌ 1.5HP motor, older efficiency standards
• ❌ Estimated 1.4kW input power
• ❌ Running 8 hours/day, 150 days/season
• ❌ Annual cost: 1.4kW × 1,200 hours × £0.26 = £436

New SR100N:

• ✅ Modern motor design with IE2 compliance
• ✅ 0.95kW input power
• ✅ Same usage pattern
• ✅ Annual cost: 0.95kW × 1,200 hours × £0.26 = £296

💰 Annual Saving: £140
📊 3-Year Saving: £420
⏱ Equipment Payback: 2.5 years (assuming £350 installation cost difference)
💷 10-Year Lifetime Saving: £1,400 (plus avoided repair costs on aging equipment)

📍 Scenario: Energy Price Protection

With energy prices volatile, efficient equipment provides insurance against future cost increases:

Current Rates (£0.26/kWh):

• SR100N annual cost (1,200 hours): £296

If Prices Rise to £0.32/kWh (23% increase):

• ❌ Old 1.4kW pump: 1.4kW × 1,200 × £0.32 = £538
• ✅ SR100N: 0.95kW × 1,200 × £0.32 = £365
• 💵 Annual saving increases to £173

The more energy prices rise, the more you save with efficient equipment.

📥 Downloads & Resources

📄 Installation & User’s Guide – Complete installation instructions, electrical connection diagrams, safety information, and troubleshooting guide for Pentair single-speed pumps including SR100N (PDF, comprehensive manual)

📄 La Sta-Rite 5P2R Product Leaflet – Technical specifications, performance curves, dimensional drawings, and product features overview (PDF, quick reference)

🏆 Why Choose the Sta-Rite SR100N?

✅ Proven Pentair Engineering – Part of the established 5P2R series trusted by pool professionals across Europe, manufactured to exacting standards in Pentair’s ISO-certified Italian facility

✅ Long-Term Value – While initial cost may exceed budget pumps, superior component quality and efficient operation deliver lower total cost of ownership through reduced energy consumption and extended service life

✅ Easy Maintenance – Tool-free access to all serviceable components, large see-through strainer basket, and readily available genuine Pentair spare parts minimise downtime and maintenance costs

✅ Chemical Resistance – Reinforced thermoplastic housing and stainless steel internals withstand aggressive pool chemicals including chlorine, bromine, and pH adjusters without degradation

✅ Quiet Operation – Sealed bearings and balanced impeller design produce minimal operating noise, important for residential installations near living spaces or neighbouring properties

✅ Future-Proof Design – Compatible with Pentair automation systems and can be upgraded to variable speed operation with appropriate control equipment, protecting your investment as technology evolves

✅ Comprehensive Compliance – Meets all UK and European electrical safety, electromagnetic compatibility, and environmental directives, ensuring installation passes building regulations and insurance requirements

✅ Genuine OEM Quality – Authentic Pentair manufacturing eliminates concerns about counterfeit parts, substandard materials, or incomplete quality control found in some imported alternatives

💎 Why Buy From Parts4Tubs?

✅ Authorised Pentair Dealer – Genuine factory-direct equipment with full manufacturer warranty and technical support access

✅ Expert Technical Advice – Knowledgeable staff with hands-on experience help ensure correct equipment selection for your specific pool requirements

✅ Fast UK Delivery – Stock held in UK warehouse for quick dispatch, avoiding extended international shipping delays

✅ Installation Support – Technical documentation and telephone guidance available to assist DIY installers or your pool contractor

✅ Competitive Pricing – Direct sourcing and efficient operations deliver professional-grade equipment at fair market prices

✅ Comprehensive Product Range – One-stop source for pumps, filters, heaters, and all pool equipment needs, simplifying procurement and ensuring component compatibility

✨ Summary

The Sta-Rite SR100N delivers professional-quality pool circulation in a residential-friendly package. With proven 1HP power, energy-efficient motor technology, and Pentair’s Italian manufacturing quality, this pump provides the reliability today’s homeowners demand. Reinforced construction, stainless steel components, and accessible maintenance design ensure years of dependable service, while modern motor efficiency keeps operating costs reasonable despite volatile energy markets. For residential pools between 30-80m³ requiring trustworthy circulation equipment backed by a global manufacturer, the SR100N represents an excellent investment in your pool’s performance and your peace of mind.