🛁 Spa-Tec Superflow Plus 1.3HP Whirlpool Bath Pump – Self-Drain Pneumatic

Powerful hydrotherapy performance for larger whirlpool bath installations

♨️ Product Overview

The Spa-Tec Superflow Plus 1.3HP is a powerful whirlpool bath pump engineered for larger domestic whirlpool systems requiring substantial jet performance. Delivering 0.99kW of robust power, this self-draining circulation pump is the flagship model in the Superflow Plus range, designed to handle multi-jet configurations and larger bath volumes with ease.

Recognisable by its unique wet end shape, the Superflow Plus 1.3HP is fitted to larger Spa-Tec whirlpool bath systems throughout the UK. The distinctive design has become a hallmark of quality in British whirlpool bath manufacturing, making identification and replacement straightforward for installers and homeowners alike.

Running at 2800 RPM, this single-speed motor delivers exceptional water flow to power demanding jet configurations. The pneumatic activation via integrated air switch provides safe, convenient bath-side control, whilst the self-draining design ensures hygienic operation by preventing stagnant water between uses.

With 63mm connection diameter, 1.5″ male buttress thread unions, and bare wire electrical termination, the Superflow Plus 1.3HP (part number CP64401) offers professional-grade construction for demanding installations where reliable performance is essential.

🌟 Key Features

✅ 1.3 Horsepower / 0.99kW Motor – Powerful output for larger whirlpool bath systems with multiple jets

✅ Self-Draining Design – Automatically empties after use, preventing bacterial growth and maintaining hygiene

✅ Pneumatic Air Switch Activation – Safe touch-button control mounted on bath surround, isolated from water

✅ 2800 RPM Motor Speed – High-speed operation delivers strong water flow for powerful jet performance

✅ 5.6 Amp Current Draw – Adequate for larger pumps whilst remaining suitable for dedicated domestic circuits

✅ 220-240V / 50Hz UK Electrical – Designed specifically for British mains supply compatibility

✅ 63mm Connection Diameter – Standard fitting size for Superflow plumbing system compatibility

✅ 1.5″ Male Buttress Thread – Secure, leak-free union connections to existing pipework

✅ Unique Wet End Design – Distinctive shape makes identification easy for replacement matching

✅ 360 × 160 × 210mm Dimensions – Compact footprint relative to power output

✅ Bare Wire Termination – Professional hardwired connection for qualified electrician installation

✅ Flagship Superflow Plus Model – Top of the range for maximum performance

📊 Technical Specifications

Specification	Value
Manufacturer	Spa-Tec
Model	Superflow Plus
Part Number (MPN)	CP64401
SKU	PMP-3832
Pump Type	Circulation / Whirlpool Bath
Motor Power	1.3 HP
Power Output (P1)	0.99 kW
Speed Settings	Single Speed
Motor RPM	2800
Voltage	220-240 V
Frequency	50 Hz
Amperage	5.6 A
Activation Type	Pneumatic (Air Switch)
Drain Type	Self-Draining
Connection Diameter	63 mm
Union Connection	1.5″ (Inch)
Thread Type	Male – Buttress
Cord Type	Bare Wire
Dimensions (L × W × H)	360 × 160 × 210 mm
Spare Parts Available	No (Complete unit replacement)

⚡ Electrical Requirements

Electrical Specification	Requirement
Supply Voltage	220-240 V
Frequency	50 Hz
Phase	Single Phase
Full Load Amperage	5.6 A
Connection Type	Bare Wire (Hardwired)
Activation	Pneumatic Air Switch

⚠️ Important Electrical Safety Information

All electrical installation must be carried out by a qualified electrician in accordance with UK wiring regulations (BS 7671). Whirlpool bath electrical systems require:

• RCD Protection – 30mA residual current device mandatory for bathroom installations
• Equipotential Bonding – All metal components must be properly earthed
• IP Rated Enclosure – Junction boxes must be suitable for bathroom zones
• Isolation Switch – Accessible isolation point required outside bath zone
• Fixed Wiring – No plug and socket connections permitted in bathroom zones 0, 1, or 2
• Adequate Circuit Rating – Ensure circuit can handle 5.6A continuous load

⚠️ Never attempt DIY electrical work on whirlpool bath systems. Water and electricity are a lethal combination.

🔗 Compatibility Guide

Connection Specifications

Connection Point	Specification
Thread Type	Male – Buttress
Connection Diameter	63 mm
Union Size	1.5″ (Inch)

This Pump Is Designed For:

📍 System Type: Spa-Tec Superflow whirlpool bath systems (larger installations) 📍 Connection: 63mm diameter with 1.5″ male buttress thread unions 📍 Activation: Pneumatic air button systems 📍 Drain Configuration: Self-draining installations

Identification:

The Superflow Plus 1.3HP is quite recognisable from its unique wet end shape – this distinctive design makes matching replacements straightforward. Look for:

• Part number CP64401 on pump label
• 1.3HP / 0.99kW power rating
• Characteristic wet end profile

Before Ordering – Check Your Existing Pump:

1. Part number – Look for CP64401 on your current pump label
2. Power rating – Confirm 1.3HP or 0.99kW rating
3. Connection size – Measure union diameter (should be 63mm / 1.5″)
4. Thread type – Verify male buttress thread configuration
5. Physical space – Ensure 360 × 160 × 210mm will fit in your cabinet
6. Electrical capacity – Confirm circuit can handle 5.6A load

Superflow Plus Range Comparison:

Model	Power	kW	Amps	Best For
0.67HP	0.67 HP	0.50 kW	2.1 A	Compact baths, 2-6 jets
1.0HP	1.0 HP	1.13 kW	3.9 A	Medium baths, 4-8 jets
1.3HP	1.3 HP	0.99 kW	5.6 A	Large baths, 8+ jets

🔧 Installation Requirements

Mounting Position

Requirement	Specification
Mounting Orientation	Horizontal
Surface	Solid, level base with vibration dampening
Ventilation Clearance	Minimum 50mm around motor for cooling
Access Space	150mm minimum for maintenance access
Location	Below bath water level (flooded suction design)

Plumbing Connections

Connection	Specification
Union Type	Male Buttress Thread
Connection Diameter	63 mm
Union Size	1.5″ (Inch)

Installation Notes

⚠️ Pump must be installed below bath water level – Self-draining design requires gravity feed for proper drainage

⚠️ Never run the pump dry – Causes immediate seal damage and motor overheating

⚠️ Ensure proper bonding to earth – All metal components must be equipotentially bonded

⚠️ Check air switch tubing – Pneumatic line must be free from kinks or blockages

⚠️ Use appropriate sealant – Thread sealant tape on all threaded connections

⚠️ Test before enclosing – Run pump and check for leaks before completing cabinet installation

⚠️ Verify electrical capacity – 5.6A draw requires adequate circuit rating

Pneumatic Air Switch Installation

The pump features integrated pneumatic activation:

1. Air button mounts on bath surround above water level
2. Flexible tubing connects button to pump air switch
3. Tubing must be continuous with no joints or damage
4. Maximum tubing length typically 3 metres
5. Ensure tubing routing avoids heat sources and sharp bends

Compatible Air Button: Spa-Tec Air Button 45mm (Chrome) available separately

🛠️ Maintenance Guide

Routine Maintenance Schedule

Task	Frequency	Notes
Visual leak inspection	Monthly	Check around seals and union connections
Union tightness check	Monthly	Hand-tighten only – do not over-tighten
Air button function test	Monthly	Press button and verify pump activation
Motor ventilation check	Quarterly	Ensure air vents free from dust and debris
Drain function verification	Quarterly	Confirm water drains completely after use
Professional electrical inspection	Annually	Check connections, earth continuity, RCD function
Amperage verification	Annually	Should read approximately 5.6A under load

Operating Best Practices

💡 Run regularly – Operate whirlpool system at least weekly to prevent seal drying and bacterial growth

💡 Clean the bath – Use appropriate whirlpool bath cleaner monthly to prevent biofilm buildup

💡 Drain completely – Ensure self-drain function operates correctly after each use

💡 Monitor temperature – Avoid operating with excessively hot water (above 40°C) for extended periods

💡 Listen for changes – Higher-powered pumps should maintain consistent sound; changes may indicate issues

Warning Signs – When to Replace

Contact Parts4Tubs for replacement if you notice:

• ❌ Unusual noise – Grinding, screeching, or rattling sounds
• ❌ Water leaking from pump – Visible drips around seal area
• ❌ Reduced jet pressure – Noticeably weaker whirlpool action
• ❌ Motor trips breaker – Repeatedly cutting out on RCD
• ❌ Burning smell – Indicates motor winding failure
• ❌ Air button unresponsive – Pump fails to activate (check tubing first)
• ❌ Water not draining – Standing water indicates blocked drain path
• ❌ Excessive vibration – May indicate bearing wear

Seal Information

Note: Spare parts are not separately available for this pump model. In the event of seal failure or internal component wear, complete pump replacement is required.

🛁 Ideal Applications

Application	Suitability	Notes
🛁 Large whirlpool bath	✅ Ideal	Primary design application
🛁 Multi-jet systems (8+ jets)	✅ Excellent	1.3HP provides strong flow to all jets
🛁 Spa-Tec larger systems	✅ Direct fit	Designed for Superflow range
🛁 Double/corner baths	✅ Recommended	Adequate power for larger volumes
🛁 Premium installations	✅ Ideal	Flagship performance for demanding users
🛁 Medium baths (4-6 jets)	⚠️ Overpowered	Consider 0.67HP or 1.0HP models
♨️ Hot tub circulation	❌ Not suitable	Not designed for continuous duty
♨️ Hot tub jet pump	❌ Not suitable	Different frame and connection standards

Power Sizing Guide

The 1.3HP Superflow Plus is the flagship model, rated for:

• Large whirlpool baths – Corner baths, double baths, premium installations
• 8+ jet configurations – Strong flow distribution to multiple jets
• Self-draining systems – Designed for intermittent use with complete drainage
• Demanding users – Maximum jet power for therapeutic massage

For smaller whirlpool installations, consider:

• Superflow Plus 0.67HP – Compact baths with 2-6 jets
• Superflow Plus 1.0HP – Medium baths with 4-8 jets

❓ Frequently Asked Questions

Q: What horsepower is this pump? A: The Superflow Plus delivers 1.3HP motor power with 0.99kW electrical output – the most powerful model in the Superflow Plus range, suitable for larger whirlpool bath systems.

Q: Will this pump fit my whirlpool bath? A: This pump features 63mm connection diameter with 1.5″ male buttress thread unions. It’s designed for larger Spa-Tec Superflow systems. Check your existing pump matches these specifications and has part number CP64401.

Q: What voltage does this pump require? A: 220-240V at 50Hz – standard UK mains supply. The 5.6A current draw requires adequate circuit capacity. All electrical installation must be performed by a qualified electrician with proper RCD protection.

Q: Is this a single or dual speed pump? A: Single speed only, running at 2800 RPM. This provides consistent, powerful jet pressure without speed variation controls.

Q: How do I identify if this is the right replacement? A: The Superflow Plus 1.3HP is quite recognisable from its unique wet end shape. Look for part number CP64401 and 1.3HP/0.99kW rating on the pump label. The distinctive wet end profile makes matching straightforward.

Q: How does the pneumatic activation work? A: An air button mounted on your bath surround sends an air pulse through tubing to the pump’s integrated air switch. Pressing the button toggles the pump on and off without any electrical contact near the water.

Q: What is self-draining and why does it matter? A: Self-draining pumps automatically empty residual water when the system stops. This is essential for hygiene in whirlpool baths, preventing stagnant water and bacterial growth in the pump and pipework between uses.

Q: What’s the difference between this and the smaller models? A: The 1.3HP model delivers 0.99kW and draws 5.6A – significantly more powerful than the 1.0HP (1.13kW/3.9A) and 0.67HP (0.50kW/2.1A) models. Choose based on your bath size and jet count.

Q: Can I upgrade from a smaller Superflow Plus pump? A: Potentially yes, if your plumbing and electrical supply can handle it. The 63mm connections are the same across the range. However, you’ll need to verify your circuit can handle the higher 5.6A current draw.

Q: What warranty is included? A: Manufacturer’s standard 1-year warranty. Extended warranty options (additional 1 year) available at time of purchase.

Q: Are spare parts available? A: Individual spare parts are not available for this pump model. In the event of seal failure or internal component wear, complete pump replacement is recommended.

Q: What compatible accessories are available? A: Spa-Tec Air Button 45mm (Chrome) and Superflow Pump Union 1.5″ are available separately for replacement or installation.

🏆 Why Choose the Spa-Tec Superflow Plus 1.3HP

✅ Maximum Power – Flagship 1.3HP/0.99kW output for demanding whirlpool bath installations

✅ Distinctive Design – Unique wet end shape makes identification and replacement matching easy

✅ Proven Reliability – Fitted to larger Spa-Tec systems throughout the UK for years

✅ Safe Pneumatic Control – Air switch technology keeps electrical controls away from water

✅ Hygienic Self-Draining – Automatic drainage prevents standing water and bacterial growth

✅ UK Electrical Compatibility – Designed for 220-240V/50Hz British mains supply

✅ Professional Construction – Bare wire termination for proper hardwired installation

✅ Manufacturer Warranty – Standard warranty with extended options available

🤝 Why Buy from Parts4Tubs

✅ UK-Based Company – Local support from our expert team

✅ Fast UK Delivery – Quick dispatch to get your whirlpool bath running again

✅ Expert Technical Advice – Speak to specialists who understand whirlpool bath systems

✅ Competitive Pricing – Great value on genuine Spa-Tec components

✅ Full Warranty Support – We handle any warranty issues directly

✅ Easy Returns – Hassle-free 30-day return policy

✅ Compatibility Guidance – We’ll help ensure you order the correct pump

✅ Complete Range – All three Superflow Plus models available

✨ Summary

The Spa-Tec Superflow Plus 1.3HP is the flagship whirlpool bath pump in the Superflow Plus range, delivering 0.99kW of powerful performance for larger domestic installations. Recognisable by its unique wet end shape, this pump features self-draining capability, pneumatic air switch activation, and 63mm / 1.5″ male buttress thread connections. Running at 2800 RPM with 5.6A current draw, it provides maximum jet power for multi-jet configurations and premium whirlpool bath systems. Contact Parts4Tubs for expert advice and fast UK delivery.