💪 LX WTC120 Jet Pump – 1.2 HP (Blue Whale Storm Force 7)

Efficient Jet Power for Crystal Clear, Perfectly Circulated Spa Water

♨️ Product Overview

The Blue Whale LX WTC120, also known as the Storm Force 7, is an efficient 1.2 HP jet pump designed to keep your spa water crystal clear and perfectly moving. Manufactured by LX, a respected name in the pump industry, the WTC120 offers reliable performance for your spa’s jet and circulation needs.

This powerful single-speed pump delivers impressive performance with its 0.9 kW motor running at 2,900 RPM, making it ideal for those seeking efficient, quiet operation to maintain their spa’s water quality. The pump is commonly used as a jet or booster pump in hot tub systems.

This is a direct replacement for the Blue Whale Spa ‘Storm Force 7’ pump.

While particularly well-suited for Chinese spa brands and Blue Whale models, the versatility of the WTC120 makes it compatible with many other spa types. With 1.5-inch plumbing connections and included unions, integrating this pump into your existing spa system is straightforward. The pump comes with a plain cable attached, making electrical connection simple.

Don’t let its modest size fool you – measuring just 290mm in length, 200mm in height, and 160mm in depth, the WTC120 delivers impressive jet power in a compact package, fitting comfortably in most spa cabinets.

✨ Key Features

✅ 1.2 HP Motor Power – Delivers 0.9 kW of efficient jet and circulation power

✅ High-Speed 2,900 RPM – Full-speed motor for powerful jet performance

✅ Single-Speed Operation – Reliable, straightforward performance

✅ Storm Force 7 Replacement – Direct drop-in for Blue Whale Storm Force 7

✅ Side Discharge Design – Self-draining capability protects system

✅ Upgraded Shaft Seals – Ceramic/Viton seals for enhanced durability

✅ 1.5″ Plumbing Connections – Universal suction and discharge ports (63mm OD thread)

✅ Rotatable Wet End – Flexible installation configurations

✅ Unions Included – Easy installation with included fittings

✅ Thermal Motor Protection – Built-in protection for reliable operation

✅ 7µF Capacitor – Ensures reliable motor starting

✅ Plain Cable Attached – Flexible electrical connection options

If your Storm Force 7 Pump Label looks like this, then this Replacement Pump is for you!

⚙️ Technical Specifications

⚡ Electrical Requirements

⚠️ IMPORTANT ELECTRICAL SAFETY NOTICE:

All electrical work must be carried out by a qualified electrician in accordance with UK wiring regulations (BS 7671). Hot tubs and spas require RCD protection (30mA) for safety. Never attempt electrical installation yourself unless you are a qualified professional. Incorrect installation may invalidate warranty and poses serious safety risks.

🔗 Compatibility Guide

Plumbing Specifications

This Pump Features:

📍 Wet End: 1.5 inch side discharge
📍 Discharge: 1.5 inch (63mm OD)
📍 Suction: 1.5 inch (63mm OD)
📍 Design: Self-draining capability
📍 Wet End: Rotatable for flexible installation
📍 Unions: Included for easy installation

Direct Replacement For:

✅ Blue Whale Spa Storm Force 7 Pump

Compatible Spa Types:

✅ Blue Whale Spas
✅ Chinese-manufactured hot tubs
✅ Various spa models with 1.5″ plumbing

🛠️ Installation Requirements

Mounting Specifications

Plumbing Connections

Installation Notes

⚠️ Unions are included with this pump, making installation straightforward

⚠️ Rotatable wet end supports flexible installation configurations

⚠️ Plain cable attached allows for flexible electrical connection options

⚠️ Side discharge design – note the plumbing orientation

⚠️ Pump must be installed below water level (flooded suction) to ensure proper priming

⚠️ Never run the pump dry – this causes seal damage and potential motor failure

⚠️ Always ensure that a qualified electrician handles the electrical connections

🔧 Maintenance Guide

Routine Maintenance Schedule

Warning Signs – Replace Pump If:

⚠️ Unusual noise such as grinding, screeching, or humming
⚠️ Water leaking from the seal area
⚠️ Motor trips the circuit breaker repeatedly
⚠️ Significantly reduced water flow or jet pressure
⚠️ Motor overheating or shutting down on thermal protection

Seal Information

📍 Seal Type: Ceramic/Viton (upgraded)
⚠️ Replace seal at first sign of leakage

🛁 Ideal Applications

❓ Frequently Asked Questions

Q: What horsepower is the LX WTC120 pump?

A: The LX WTC120 is a 1.2 HP (0.9 kW) single-speed jet pump running at 2,900 RPM, delivering powerful performance for spa jets and massage functions.

Q: Is this the same as the Storm Force 7?

A: Yes, this is a direct replacement for the Blue Whale Spa ‘Storm Force 7’ pump. If your Storm Force 7 pump label matches the product image, this replacement pump is for you.

Q: What is the amperage draw?

A: The WTC120 draws 4.6 amps at 230V/50Hz. Ensure your electrical circuit can handle this load.

Q: What size are the plumbing connections?

A: Both suction and discharge ports are 1.5 inches with 63mm outer thread diameter. The pump features a side discharge configuration with self-draining capability. Unions are included for easy installation.

Q: Can I rotate the wet end for installation?

A: Yes, the WTC120 features a rotatable wet end to support flexible installation configurations, making it easier to fit in different cabinet layouts.

Q: Are unions included with this pump?

A: Yes, unions are included to make installation straightforward. The pump also comes with a plain cable attached for flexible electrical connection options.

Q: What type of shaft seal does this pump have?

A: This pump features upgraded ceramic/Viton shaft seals for enhanced durability and longer seal life.

Q: Is this a circulation pump or a jet pump?

A: The WTC120 is primarily used as a jet or booster pump, providing powerful water flow for spa jets and massage functions. It can also provide effective circulation.

Q: How do I know if I have a 1.5″ union size?

A: Measure the collar tip to tip on your existing pump. A measurement of 2.5 inches (64mm) indicates a 1.5″ union size.

🏆 Why Choose the LX WTC120

✅ Powerful Performance – 1.2 HP motor delivers strong jet power

✅ Reliable Operation – Built by LX, a respected name in pump manufacturing

✅ Upgraded Seals – Ceramic/Viton shaft seals for durability

✅ Flexible Installation – Rotatable wet end for various configurations

✅ Side Discharge Design – Self-draining capability

✅ Storm Force 7 Compatible – Direct drop-in replacement

✅ Unions Included – Easy installation

✅ Thermally Protected – Built-in motor protection with 7µF capacitor

✅ Compact Design – Fits comfortably in most spa cabinets

✅ Improved Water Clarity – Consistent circulation keeps water clean

🤝 Why Buy From Parts4Tubs

✅ UK-Based Company – Local support from knowledgeable spa specialists

✅ Fast UK Delivery – Quick despatch to get your spa running again

✅ Expert Advice – Our team can help with compatibility questions

✅ Competitive Pricing – Trade-quality parts at fair prices

✅ Full Warranty Support – Comprehensive warranty backing

✅ Easy Returns – Hassle-free returns within 30 days if unused

✅ Replacement Parts Available – Seals, capacitors, and spares in stock

⭐ Summary

The Blue Whale LX WTC120 (Storm Force 7) is a powerful, efficient 1.2 HP jet pump delivering 0.9 kW of performance at 2,900 RPM, designed for spa jets, massage functions, and water circulation. Drawing 4.6 amps at 230V/50Hz, it features 1.5-inch plumbing connections (63mm OD), side discharge with self-draining design, upgraded ceramic/Viton shaft seals, rotatable wet end for flexible installation, thermal motor protection with 7µF capacitor, and compact 290 × 200 × 160 mm dimensions. A direct replacement for the Blue Whale Spa Storm Force 7, it comes with unions included and plain cable attached for easy installation. Perfect for Blue Whale Spas and Chinese-manufactured hot tubs. Order from Parts4Tubs for fast UK delivery and expert support.

The hot tub industry doesnt make it easy for you when you are trying to match up the size of the unions (the part that screws your pipe work onto the pumps) Below you can see the physical sizes of the collars, and how they relate to the actual union size you need. So a measurement of 2.5", edge to edge on the collar of the pump is actually a 1.5" union - confusing - absolutely! If you are not sure, give me a shout!

How do I Replace a Hot Tub Pump?

Here's a general step-by-step guide on how to replace a hot tub pump. Keep in mind that the specific steps may vary depending on your hot tub's make and model, so it's essential to consult your hot tub's manual for model-specific instructions. If you're not comfortable with this procedure, it's a good idea to seek professional assistance.

Materials You'll Need:

• Replacement pump
• Pipe wrench
• Adjustable wrench
• Screwdriver
• Pipe sealant (thread tape or plumber's putty)
• PVC primer and cement (if you have PVC plumbing)
• Teflon tape (for threaded connections)

Procedure:

1. Turn Off the Power: Before you begin, ensure the hot tub's power supply is turned off at the circuit breaker or disconnect switch. Safety should always be a priority when working with electrical components.
2. Drain the Hot Tub: If your hot tub is not already empty, you'll need to drain it. Follow your hot tub's manual or manufacturer's instructions for proper draining. (You might not need to do this if you can lock the pump off with the gate valves)
3. Locate the Pump: Identify the location of the existing pump in your hot tub. It's usually located near the equipment area or in a designated pump compartment.
4. Disconnect the Electrical Wiring: Carefully disconnect the electrical wiring from the old pump. This typically involves removing the electrical conduit cover, unscrewing wire nuts, and disconnecting the wires from the terminals. Be sure to note the wire connections or take a picture for reference when connecting the new pump.
5. Disconnect the Plumbing: Depending on your hot tub's plumbing setup, you'll need to disconnect the plumbing connections to the pump. Use a pipe wrench or adjustable wrench to loosen and remove the fittings. Be prepared for some water spillage when disconnecting the plumbing.
6. Remove the Old Pump: Once the electrical and plumbing connections are detached, carefully remove the old pump from its mounting position. Some pumps may be secured with mounting brackets or bolts.
7. Prepare the New Pump: If the new pump is not pre-assembled, you may need to attach fittings, unions, or adapters to match your hot tub's plumbing. Ensure that you use the appropriate sealant or Teflon tape on threaded connections to prevent leaks.
8. Mount the New Pump: Position the new pump in the same location as the old one and secure it in place using the mounting brackets or bolts.
9. Reconnect Plumbing: Reconnect the plumbing to the new pump, ensuring that all connections are tight and secure. If your hot tub uses PVC plumbing, use PVC primer and cement to bond the connections properly.
10. Reconnect Electrical Wiring: Reconnect the electrical wiring to the new pump, following the notes or pictures you took earlier. Make sure all wires are properly connected and secure.
11. Turn On the Power: Restore power to the hot tub by switching on the circuit breaker or reconnecting the disconnect switch.
12. Test the Pump: Turn on the hot tub's pump to ensure that it's working correctly. Check for any signs of leaks or irregularities in the plumbing connections.
13. Refill the Hot Tub: Once you've confirmed that the new pump is functioning properly, refill the hot tub with water.
14. Check for Leaks: Inspect the plumbing connections for any leaks. If you find any, turn off the pump, drain the tub again, and reseal the connections as needed.
15. Monitor: Keep an eye on the pump and plumbing for the next few days to ensure everything is functioning correctly and that there are no further issues.

Remember that this is a general guideline, and the specific steps may vary based on your hot tub's design. If you're unsure or uncomfortable with any aspect of this process, please do get in touch, happy to help.

How do I know what size hot tub pump I have?

Determining the size of your hot tub pump is an important step when it comes to maintenance or replacement. To find out the size of your hot tub pump, follow these steps:

1. Check the Manual: The easiest way to determine the size of your hot tub pump is to consult the owner's manual or user documentation that came with your hot tub. The manual typically contains detailed information about the specifications and components of your hot tub, including the pump.
2. Look at the Pump Housing: If you don't have access to the manual or it doesn't provide the information you need, inspect the pump itself. Most hot tub pumps have a label or plate on the pump housing that displays essential details, including the pump's model number, manufacturer, and specifications. You can then send that to me or Google it.
3. Measure the Pump: If the label is missing or damaged, you can measure the pump's dimensions. Measure the diameter of the pump's wet end (the part where the water flows) and the length of the wet end. These measurements can help identify the size and capacity of the pump.
4. Consult the Manufacturer: If you can't find the information on the pump or in the manual, contact the hot tub manufacturer or a reputable dealer. Provide them with your hot tub's model and serial number, and they should be able to identify the correct pump size for your specific hot tub.
5. Online Research: You can also search online using the pump's model number or hot tub's make and model. Many manufacturers provide detailed information about their products on their websites, and you may find specifications for your pump model.

Once you have determined the size and specifications of your hot tub pump, you can proceed with maintenance, repairs, or replacement if necessary. Keep in mind that replacing a hot tub pump with the same size and capacity as the original is crucial to ensure proper water circulation and filtration in your hot tub. If you're unsure about any aspect of this process, get in touch, always happy to help.