⚙️ LX Lingxiao WBC150 Bath Pump — 1.5 HP 115V Single-Speed Hydromassage | 1-1/2″ Center Suction, Side Discharge

Compact, quiet, and reliable hydromassage power for jetted bathtubs — the versatile OEM replacement bath pump

📋 Product Overview

The LX WBC150 is a 1.5 HP single-speed hydromassage bath pump manufactured by Lingxiao Pump (LX Pumps), one of the world’s leading spa and bath pump manufacturers with over 46 years of pump design and production experience. This compact 115V bath pump is designed specifically for jetted bathtub and whirlpool bath applications in the North American market (60Hz), delivering powerful hydromassage jet performance through 1-1/2 inch MBT (male buttress thread) plumbing connections.

The WBC150 features a center suction intake and side discharge configuration, drawing 9.0 amps at 115V. It is widely used as a direct OEM replacement in jetted bathtubs from numerous manufacturers, and serves as the go-to replacement for the discontinued Aqua-Flo Flo-Master FMHP pump (02010000-1010) found in Artesian Spas and many other brands. The pump utilizes a Viton, silicon carbide, and graphite mechanical seal assembly for durable and reliable performance under continuous heat and chemical exposure.

The WBC150 is an air-cooled motor design with low noise and low vibration characteristics, making it well-suited for indoor jetted bathtub installations where quiet operation is essential. Power cord is NOT included and must be purchased separately.

✨ Key Features

✅ 1.5 HP Single-Speed 115V Hydromassage Pump — Designed for jetted bathtub and whirlpool bath applications in North America (60Hz)

✅ 9.0 Amp Motor at 115V — Powerful hydromassage jet performance for residential bath installations

✅ Center Suction / Side Discharge — Optimized flow configuration for bath pump applications; discharge ships at the 12 o’clock position

✅ 1-1/2 Inch MBT Connections — Standard male buttress thread on both suction and discharge (thread OD approximately 2-7/16 inches)

✅ Viton / Silicon Carbide / Graphite Seal — Resistant to high and low temperatures, corrosion resistant, high hardness for durable and reliable performance

✅ Air-Cooled Motor — Low noise, low vibration design ideal for indoor jetted bathtub installations

✅ Direct Aqua-Flo FMHP Replacement — Replaces the discontinued Aqua-Flo Flo-Master FMHP 02010000-1010 found in Artesian Spas and others

✅ Broad OEM Compatibility — Compatible with Gecko, Watkins/Hot Spring, Balboa, and many other OEM systems

✅ LX Lingxiao Quality — Over 46 years of pump design and manufacturing expertise

🔩 Technical Specifications

Specification	Detail
Model Number	WBC150
Manufacturer	LX Lingxiao Pump
Pump Type	Hydromassage Bath Pump
Horsepower	1.5 HP
Speed Settings	Single Speed (1-Speed)
Voltage	115V (110V-120V)
Frequency	60 Hz
Amperage	9.0A
RPM	3425
Suction Size	1-1/2 inch MBT
Suction Style	Center
Suction Thread OD	Approximately 2-7/16 inches
Discharge Size	1-1/2 inch MBT
Discharge Style	Side (ships at 12 o’clock position)
Discharge Thread OD	Approximately 2-7/16 inches
Seal Type	Viton / Silicon Carbide / Graphite
Motor Cooling	Air cooled
Weight	21 lbs
Cord Included	No — sold separately
Market	North America (60Hz)

⚠️ Frame Size Note:

The WBC150 has been listed with both a 15 Frame and a 48 Frame designation across different retailers. This compact bath pump may use a proprietary frame size. Verify physical dimensions against your existing pump before ordering.

Flow Rate: Approximately 111–116 GPM.

⚡ Electrical Requirements

Electrical Spec	Requirement
Supply Voltage	115V (110V-120V)
Frequency	60 Hz
Phase	Single
Full Load Amps	9.0A
RPM	3425
Cord	Not included — sold separately
Wiring	3 wires (1-speed pump)

⚠️ IMPORTANT ELECTRICAL SAFETY INFORMATION:

All electrical work must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and local building codes. Jetted bathtubs and whirlpool baths require GFCI (Ground Fault Circuit Interrupter) protection. A dedicated circuit is required — do not share with other appliances.

⚠️ CORD NOT INCLUDED: The power cord must be purchased separately. Compatible options include a 1-speed AMP cord (such as the 60 inch pump cord 21086 available from Parts4Tubs, or the 72 inch AMP cord 30-0024-K). This is a 1-speed pump requiring a 3-wire cord — do NOT use a 4-wire (2-speed) cord.

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🔗 Compatibility Guide

Connection Specifications

Connection	Size	Style	Thread OD
Suction (Intake)	1-1/2 inch MBT	Center	Approximately 2-7/16 inches
Discharge	1-1/2 inch MBT	Side (12 o’clock)	Approximately 2-7/16 inches

Thread Sizing Reference:

Nominal Size	Approximate Thread OD
1-1/2 inch	2-7/16 inches (approximately 2.5 inches / 64mm tip-to-tip)
2 inch	3 inches (approximately 3-1/16 inches / 78mm)

Pumps This Model Replaces

The WBC150 is a verified replacement for the following discontinued or OEM pumps:

Aqua-Flo / Gecko:

• 02010000-1010 (Aqua-Flo Flo-Master FMHP — found in Artesian Spas and others)
• 34-402-5002 (Gecko OEM number)
• 34-343-1080

Watkins / Hot Spring:

• 1431501-03

Balboa:

• 97311-420
• 97411-420
• 97411-200

Compatible OEM Systems

The WBC150 is used as an OEM replacement across multiple spa and bath manufacturers including systems from Gecko Alliance, Watkins (Hot Spring / Caldera / Freeflow), Balboa Water Group, Artesian Spas, and Lifesmart. Always verify amperage (9.0A) and plumbing size (1-1/2 inch MBT) match your existing pump.

How to Confirm Compatibility

1. Match the AMPERAGE — Your existing pump should draw approximately 9.0A at 115V
2. Verify PLUMBING SIZE — Measure the thread OD on suction and discharge. If both measure approximately 2-7/16 inches, you have 1-1/2 inch connections
3. Confirm DISCHARGE STYLE — The WBC150 has center suction and side discharge
4. Verify VOLTAGE — Must be 115V (110V-120V), NOT 230V

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🛠️ Installation Requirements

Mounting

Requirement	Specification
Motor Cooling	Air cooled — ensure adequate ventilation
Base	Solid, level surface; vibration-dampening pad recommended
Access	Sufficient space for pump and plumbing service
Location	Typically beneath the bathtub deck

Plumbing Connections

Connection	Size	Type
Suction (Intake)	1-1/2 inch	Male Buttress Thread (MBT) — center
Discharge	1-1/2 inch	Male Buttress Thread (MBT) — side, 12 o’clock

Installation Notes

⚠️ All electrical work must be performed by a licensed electrician per NEC and local codes

⚠️ GFCI protection is required by code for all jetted bathtub installations

⚠️ Power cord is NOT included — purchase separately (3-wire cord for 1-speed pump)

⚠️ Verify voltage matches before connecting — 115V ONLY for this model

⚠️ Use Teflon tape on threaded connections to prevent leaks

⚠️ Ensure pump is securely mounted to minimize vibration and noise

⚠️ Test for leaks after installation before closing access panels

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🔧 Maintenance Guide

Routine Maintenance

Task	Frequency	Notes
Check for leaks	Monthly	Inspect around seal, unions, and connections
Inspect unions and fittings	Monthly	Hand tighten if needed
Listen for unusual noise	Monthly	Grinding, screeching, or cavitation indicate problems
Inspect motor vents	Quarterly	Keep clear of debris for proper air cooling
Check mounting stability	Quarterly	Ensure pump is secure and stable
Verify flow	Monthly	Reduced jet performance may indicate impeller wear or blockage

Warning Signs — Service or Replace Pump If:

• Unusual noise (grinding, screeching, humming without spinning)
• Water leaking from the seal plate area
• Motor trips the circuit breaker repeatedly
• Reduced jet pressure or flow
• Motor overheating
• Excessive vibration
• Pump fails to start

Seal Information

Seal Component	Material
Seal Face	Silicon Carbide
Elastomer	Viton
Seal Housing	Graphite

The Viton / silicon carbide / graphite seal assembly is resistant to high and low temperatures, corrosion resistant, and provides high hardness for durable and reliable long-term performance.

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🎯 Ideal Applications

Application	Suitability	Notes
🛁 Jetted bathtubs / whirlpool baths	Yes — Primary application	Designed specifically for hydromassage bath use
🛁 Indoor whirlpool tub replacement	Yes	Low noise, air-cooled, compact design
♨️ Small spa / hot tub jet pump	Possible	Verify amperage and plumbing compatibility
♨️ Aqua-Flo FMHP replacement	Yes	Direct replacement for 02010000-1010
♨️ Large hot tub jet pump	No — Undersized	Consider a higher HP pump for large hot tubs
🔄 Circulation pump	No	This is a jet/hydromassage pump, not a circulation pump

❓ Frequently Asked Questions

Q: What horsepower is this pump? A: This is a 1.5 HP single-speed bath pump operating at 115V/60Hz and drawing 9.0 amps. When matching a replacement pump, always confirm the amperage (9.0A at 115V) matches your existing pump.

Q: Will this replace my Aqua-Flo FMHP pump? A: Yes. The WBC150 is widely used as a direct replacement for the discontinued Aqua-Flo Flo-Master FMHP 02010000-1010 found in Artesian Spas and many other brands. The WBC150 is a more efficient design drawing 9.0 amps compared to the original pump.

Q: What voltage does this pump require? A: 115V (110V-120V) / 60Hz. This is a standard North American household voltage. Do NOT connect to 230V.

Q: Does this pump come with a power cord? A: No. The power cord is NOT included and must be purchased separately. Use a 3-wire, 1-speed pump cord (such as the 60 inch pump cord 21086 or 72 inch AMP cord 30-0024-K). Do NOT use a 4-wire (2-speed) cord.

Q: Does this pump come with unions? A: This may vary by retailer. Some listings indicate gaskets and/or unions are included. Contact Parts4Tubs to confirm what is included with their listing.

Q: What size are the plumbing connections? A: Both suction (center) and discharge (side) are 1-1/2 inch MBT (male buttress thread). The outside diameter of the threads measures approximately 2-7/16 inches. These connect to 1-1/2 inch inner diameter hose or pipe.

Q: Where is the discharge located? A: The discharge is a side discharge that ships at the 12 o’clock position. The suction (intake) is center.

Q: Is this pump suitable for a hot tub or only a bathtub? A: The WBC150 is primarily designed as a hydromassage bath pump for jetted bathtubs. However, it is also used in some smaller spa applications as a replacement for the Aqua-Flo FMHP. Verify amperage and plumbing compatibility with your existing setup.

Q: What OEM systems is this compatible with? A: The WBC150 is compatible with OEM systems from Gecko Alliance (34-402-5002), Watkins/Hot Spring (1431501-03), Balboa (97311-420, 97411-420, 97411-200), Artesian Spas, and Lifesmart, among others.

Q: How heavy is this pump? A: Approximately 21 lbs.

Q: Do I need a GFCI breaker? A: Yes. GFCI (Ground Fault Circuit Interrupter) protection is required by the National Electrical Code (NEC) for all jetted bathtub and spa electrical installations.

Q: What warranty is included? A: LX Lingxiao provides a 12-month warranty on this pump. Contact Parts4Tubs for specific warranty terms applicable to their listing. Note: LX requires the motor serial number label for all warranty replacements.

🏆 Why Choose the LX WBC150

✅ Direct OEM Replacement — Compatible with Aqua-Flo FMHP, Gecko, Watkins, Balboa, and many other OEM systems

✅ Quiet, Low-Vibration Operation — Air-cooled motor designed for indoor jetted bathtub installations

✅ Durable Viton / Silicon Carbide / Graphite Seal — Long-lasting performance under heat and chemical exposure

✅ 1.5 HP Efficient 9.0A Motor — Powerful hydromassage performance with efficient operation

✅ Standard 1-1/2 Inch MBT Connections — Compatible with standard bath and spa plumbing

✅ LX Lingxiao Manufacturing — Over 46 years of pump engineering and production expertise

🤝 Why Buy From Parts4Tubs

✅ US-based support for American customers

✅ Fast shipping across the United States

✅ Expert advice from spa and hot tub specialists

✅ Competitive pricing

✅ Full warranty support

✅ Hassle-free returns

✅ Compatible cords, unions, and accessories available

✅ Dedicated customer service team

✨ Summary

The LX Lingxiao WBC150 is a 1.5 HP single-speed hydromassage bath pump operating at 115V/60Hz and drawing 9.0 amps, designed for jetted bathtub and whirlpool bath applications. Featuring center suction and side discharge with 1-1/2 inch MBT connections, this compact and quiet air-cooled pump is a direct replacement for the discontinued Aqua-Flo FMHP 02010000-1010 and is compatible with OEM systems from Gecko, Watkins, Balboa, Artesian, and others. Viton / silicon carbide / graphite seals ensure durable long-term performance. Available now at Parts4Tubs with expert support and fast US shipping.

 

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	Magic Plastics Union 0602-15 (1.5″ Pump Union) | 1-1/2″S x 1-1/2″FBT Union, Pump, Magic, 1-1/2"S x 1-1/2"FBT (Industry Standard) w/ O-Ring	$6.36 Max: 586 Min: 1 Step: 1 Add to cart
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Hot Tub Pump Collar & Union Size Chart

Imperial & Metric Specifications

Union Size	Collar Size	Thread OD	Union OD	O-Ring Size
1.5" Female Buttress Thread (FBT)	2.5" / 64mm (Tip to Tip) Measurement	2-1/2" 64mm	2-13/16" 71mm	2-5/16" OD 59mm
2" Female Buttress Thread (FBT)	3.1" / 78mm (Tip to Tip) Measurement	3-1/16" 78mm	3-3/8" 81mm	2-15/16" OD 75mm
2.5" Female Buttress Thread (FBT)	3.6" / 91mm (Tip to Tip) Measurement	3-5/8" 91mm	4-1/4" 108mm	3-7/16" OD 87mm

Important Notes

The union "size" (1.5", 2", 2.5") is nominal and doesn't correspond to any actual measurement.

Collar size is measured from thread tip to thread tip on the pump outlet.

Most hot tub pumps use Female Buttress Thread (FBT) - 98% of applications.

O-ring gaskets may vary between manufacturers - measure your existing gasket for accuracy.

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.