⚡ LX 48WUA1002C-II Spa Pump – 1.0 HP 2-Speed 230V

Energy-efficient dual-speed power for whisper-quiet spa circulation and massage

💧 Product Overview

The LX 48WUA1002C-II is a 1.0 HP, 2-speed spa pump from the LX WUA series, manufactured by Guangdong Lingxiao (LX). Designed specifically for North American spa applications, this 230V/60Hz pump delivers reliable dual-speed operation — high speed for powerful hydrotherapy massage and low speed for energy-efficient filtration and circulation cycles.

Built on a compact 48 frame platform, the 48WUA1002C-II features 2-inch MBT (Male Buttress Thread) connections on both suction and discharge, a side discharge configuration that can be rotated in 90-degree increments, and a mechanical seal engineered for long-term watertight performance. The pump ships with two union sets included for straightforward installation. Recognized and accepted by major spa manufacturers, the WUA series has earned a strong reputation as a dependable replacement pump for a wide range of hot tub brands and models.

At just 5.5 amps on high speed and 2.0 amps on low speed, this 230V design draws significantly less amperage than its 115V counterpart, making it an ideal choice for dedicated 230V spa circuits.

⭐ Key Features

✅ Dual-Speed Operation – High speed for massage jets, low speed for quiet filtration — optimized for energy savings and versatility

✅ 1.0 HP Motor – Delivers consistent, reliable power for spa circulation and hydrotherapy applications

✅ 230V / 60Hz Electrical – Lower amperage draw (5.5A/2.0A) compared to 115V models, ideal for dedicated spa circuits

✅ 48 Frame (Small Frame) – Compact motor frame fits tight equipment bays while delivering strong performance

✅ 2-Inch MBT Connections – Both suction and discharge ports use 2″ Male Buttress Thread for compatibility with standard spa plumbing

✅ Side Discharge Design – Discharge port can be rotated in 90-degree increments to align with your existing plumbing layout

✅ Mechanical Seal – Viton / Silicon Carbide / Graphite construction for temperature resistance, corrosion resistance, and long-lasting watertight operation

✅ Unions Included – Two sets of pump unions with O-rings ship with the pump for a complete installation package

✅ Anti-Creep Bearings – High-temperature grease-filled bearings for quiet, smooth motor operation

✅ Manufacturer’s 1-Year Limited Warranty – Backed by LX (Lingxiao) for peace of mind

⚙️ Technical Specifications

Specification	Detail
Model Number	48WUA1002C-II
Manufacturer	LX (Guangdong Lingxiao)
Series	48WUA
Pump Type	Jet Pump (Dual-Speed)
Motor Power	1.0 HP
Speed Settings	2-Speed
Voltage	230V
Frequency	60 Hz
High Speed Amperage	5.5 A
Low Speed Amperage	2.0 A
Frame Type	48 Frame (Small Frame / LX48)
Motor Diameter	5.6 inches
Discharge Port	2″ MBT (Male Buttress Thread)
Suction Port	2″ MBT (Male Buttress Thread)
Discharge Location	Side Discharge (rotatable in 90° increments)
Suction Location	Center (front face)
Thread Diameter (Across Threads)	Approximately 3-1/16″
Seal Type	Mechanical (Viton / Silicon Carbide / Graphite)
Cord Type	None — Hardwire installation required
Unions Included	Yes (2 sets with O-rings)
Warranty	1-Year Manufacturer’s Limited Warranty

⚠️ Note on Amperage: Most authorized distributors list high speed amperage as 5.5A. One source lists 5.2A. Verify the amp rating on the pump label upon receipt. The low speed rating of 2.0A is consistent across all sources.

⚠️ Note on Dimensions: Approximate overall length is 15-3/16″ to 15-3/8″. Width and height are approximately 7.25″ to 8-7/16″. Dimensions may vary slightly depending on the motor model supplied, as the manufacturer reserves the right to change motor suppliers. Please refer to the pump label for exact dimensions.

⚡ Electrical Requirements

Electrical Spec	Requirement
Supply Voltage	230V
Frequency	60 Hz
Phase	Single Phase
Full Load Amps (High Speed)	5.5 A
Full Load Amps (Low Speed)	2.0 A
Cord / Connection	Hardwire (no cord included)

⚠️ 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.
• Hot tubs require GFCI (Ground Fault Circuit Interrupter) protection as mandated by the NEC.
• A dedicated circuit is required — do not share with other appliances.
• This is a 230V pump. Verify your existing electrical supply is 230V before ordering. Connecting this pump to 115V will not operate correctly. If you need a 115V version, see model 48WUA1001C-II.
• For 2-speed pump wiring: C = Common (White), L = Low Speed (typically Black), H = High Speed (typically Red), Green = Ground. Verify with the wiring label on the pump.
• When powering up, the pump should start in low speed first. If it starts in high speed, power down immediately and swap the low and high speed wires.

🔗 Compatibility Guide

Frame & Plumbing Configuration:

Detail	Specification
Frame	48 Frame (Small Frame / LX48)
Wet End	2 inch
Discharge	2 inch MBT — Side Discharge (rotatable)
Suction	2 inch MBT — Center Face
Thread OD (Across Pump Threads)	Approximately 3-1/16″

Union Size Reference:

Union Size	Collar Size (Tip to Tip)	Thread OD
2″ Female Buttress Thread (FBT)	3.1″ / 78mm	3-1/16″ / 78mm

This pump connects to 2-inch plumbing — this refers to the inner diameter of the connecting hose or pipe. The outer diameter across the pump threads is approximately 3-1/16″ to accommodate a 2-inch pump union.

Commonly Used as a Replacement For:

This 230V model LX pump is commonly used in circulation pump applications and is recognized as a replacement option for various 1.0 HP, 230V, 48 frame, 2-speed spa pumps with 2-inch connections and side discharge. Always verify voltage, amperage, frame size, port sizes, and discharge configuration before ordering.

Alternate Part Numbers:

• 48WUA1002CII
• LX-48WUA1002C-II
• SPM8833505703

115V Version Available: If your spa operates on 115V, see model 48WUA1001C-II instead.

🛠️ Installation Requirements

Mounting:

Requirement	Specification
Mounting Position	Horizontal (with base/feet)
Base	Pump includes mounting feet/base; mount on a solid, level, vibration-dampening surface
Ventilation	Ensure adequate clearance around the motor for air cooling
Access	Allow sufficient space for maintenance and union access

Plumbing:

Connection	Size	Type
Suction (Intake)	2 inch	Center face, MBT
Discharge (Output)	2 inch	Side discharge, MBT
Unions	Included	2 sets with O-rings

Wet End Rotation:

The wet end ships in the vertical position (discharge pointing to 12 o’clock). To rotate the discharge to align with your plumbing, simply loosen the four long bolts at the back of the motor and rotate the wet end to the desired position (3, 6, or 9 o’clock). Retighten the bolts securely.

Installation Notes:

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

⚠️ Never run the pump dry — this will damage the mechanical seal and void the warranty.

⚠️ Ensure proper grounding and bonding per NEC requirements.

⚠️ GFCI protection is required by code for all hot tub and spa installations.

⚠️ This pump does not include a power cord. It must be hardwired by a licensed electrician, or a compatible pump cord must be purchased separately. For 2-speed AMP-style pump cords, see available accessories at Parts4Tubs.

🔄 Maintenance Guide

Routine Maintenance:

Task	Frequency	Notes
Check for leaks	Monthly	Inspect around the mechanical seal and union connections
Inspect union connections	Monthly	Tighten if needed; check O-rings for wear
Clean strainer/filter	As needed	Remove debris that may restrict water flow
Check motor amperage	Annually	Should match the rated 5.5A (high) / 2.0A (low)
Inspect motor vents	Quarterly	Keep clear of debris for proper cooling
Check mounting bolts	Quarterly	Tighten if loose from vibration

Warning Signs — Replace Pump If:

• Unusual noise (grinding, screeching, or humming without rotation)
• Water leaking from the mechanical seal area
• Motor trips the circuit breaker repeatedly
• Noticeably reduced water flow through jets
• Motor overheating or shutting down during operation

Seal Replacement:

• Seal Type: Mechanical (Viton / Silicon Carbide / Graphite)
• ⚠️ Replace the seal at the first sign of leakage to prevent motor damage

🎯 Ideal Applications

Application	Suitability	Notes
♨️ Hot tub jet pump	Yes	High speed delivers massage power for hydrotherapy jets
♨️ Spa circulation/filtration	Yes	Low speed provides energy-efficient filtration cycles
🛁 Whirlpool bath	Possible	Verify frame size, voltage, and plumbing compatibility

❓ Frequently Asked Questions

Q: What horsepower is this pump? A: The LX 48WUA1002C-II is rated at 1.0 HP. Note that LX pump labeling conventions may show alternate HP ratings; always refer to the amperage draw (5.5A high / 2.0A low at 230V) for accurate comparison with other pumps.

Q: Will this fit my hot tub? A: This pump uses a 48 frame with 2-inch MBT connections on both suction and discharge. Verify your existing pump’s frame size (48 or 56), port sizes, voltage, and discharge configuration before ordering. If you’re unsure, contact Parts4Tubs for compatibility advice.

Q: What voltage does this pump require? A: 230V / 60Hz. All electrical installation must be performed by a licensed electrician. If your spa runs on 115V, you need the 48WUA1001C-II model instead.

Q: Does this pump come with a power cord? A: No. This pump requires hardwire installation. A compatible 2-speed pump cord can be purchased separately if needed.

Q: Does this pump come with unions? A: Yes, two sets of pump unions with O-rings are included.

Q: Can I rotate the discharge to match my plumbing? A: Yes. The discharge can be rotated in 90-degree increments (12, 3, 6, or 9 o’clock positions) by loosening the four long bolts at the back of the motor and rotating the wet end.

Q: What is the difference between this pump and the 48WUA1001C-II? A: They are the same pump in different voltage configurations. The 48WUA1002C-II is 230V (5.5A/2.0A), while the 48WUA1001C-II is 115V (10.3A/3.8A). Choose based on your spa’s electrical supply.

Q: Is this a single or dual speed pump? A: This is a 2-speed pump. High speed is used for massage/jets; low speed is used for filtration and circulation.

Q: What size are the ports? A: Both suction (center intake) and discharge (side) are 2-inch MBT (Male Buttress Thread). The outer diameter across the pump threads is approximately 3-1/16″.

Q: What warranty is included? A: The pump comes with a manufacturer’s 1-year limited warranty from LX (Lingxiao). Contact Parts4Tubs for full warranty terms and support.

Q: How do I know if my pump needs replacing? A: Common signs include unusual noise (grinding or screeching), water leaking from the seal area, reduced water flow, the motor tripping the breaker, or the motor overheating.

Q: Do I need a GFCI breaker? A: Yes, GFCI protection is required by the National Electrical Code (NEC) for all hot tub and spa installations.

🏆 Why Choose the LX 48WUA1002C-II

✅ Reliable Dual-Speed Performance – High speed for powerful jets, low speed for quiet, energy-efficient filtration

✅ Low Amperage Draw – 230V design means only 5.5A on high speed, reducing electrical load and operating costs

✅ Compact 48 Frame Design – Fits tight equipment compartments while delivering strong, consistent flow

✅ Durable Mechanical Seal – Viton / Silicon Carbide / Graphite construction resists heat, corrosion, and wear

✅ Versatile Installation – Rotatable wet end and included unions simplify replacement in virtually any plumbing layout

✅ Backed by Warranty – 1-year manufacturer’s limited warranty for dependable peace of mind

🤝 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 in USD

✅ Full warranty support

✅ Hassle-free returns

✅ Replacement seals, unions, and pump accessories available

✅ Dedicated customer service team

✨ Summary

The LX 48WUA1002C-II is a 1.0 HP, 2-speed, 230V spa pump built on a compact 48 frame with 2-inch MBT connections and side discharge. Drawing just 5.5A on high speed and 2.0A on low speed, it delivers energy-efficient dual-speed operation for both powerful jet massage and quiet filtration cycles. Ships with unions included and backed by a 1-year manufacturer’s warranty. Order today from Parts4Tubs for fast US shipping and expert support.

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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
	Magic Plastics Union 0602-20 (2″ Pump Union) | 2″S x 2″FBT w/ O-Ring Union, Pump, Magic, 2"S x 2"FBT (Industry Standard) w/ O-Ring	$8.00 Max: 535 Min: 1 Step: 1 Add to cart
	Waterway Union 400-6010 | 2-1/2″ Union Nut with 2-1/2″ Slip tailpiece and o-ring (2.5″ union) Union, Pump, Waterway, 2-1/2"FBT x 2-1/2"S	$14.77 Max: 150 Min: 1 Step: 1 Add to cart
	1 Speed Pump / Blower / AMP Cord | 21086 Amp Plug, Pump, 1-Speed, 14/3, 4-Pin, 5' Cord, White	$24.71 Max: 341 Min: 1 Step: 1 Add to cart
	Balboa Amp Plug 21087 (For 2 Speed Pumps) Amp Plug, Pump 1 (2-Speed) 14/4, 72" Long, White	$31.72 Max: 174 Min: 1 Step: 1 Add to cart

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.