🔧 Gecko Aqua-Flo Flo-Master FMXP2E Spa Pump – 2.0 HP 2-Speed 230V 56-Frame 2-1/2″ x 2″ (05320762-5040)

High-flow dual-speed jet pump with oversized 2-1/2″ intake for multi-jet spa systems

♨️ Product Overview

The Gecko Aqua-Flo Flo-Master FMXP2E (05320762-5040) is a high-performance, energy-efficient dual-speed jet pump built for heavily jetted hot tubs and spas plumbed with 2-1/2 inch suction lines. Rated at 2.0 HP continuous (3.0 brake horsepower), this 56-frame pump features a larger 2-1/2 inch intake combined with a standard 2 inch side discharge — delivering superior water flow compared to standard 2″ x 2″ configurations.

Operating at 230V/60Hz with dual-speed capability, this pump provides powerful high-speed hydrotherapy and efficient low-speed circulation in a single unit. The oversized intake reduces restriction at the suction side, making it ideal for spas with 2-1/2 inch plumbing. Backed by UL approval (E62386) and a 2-year manufacturer warranty from Gecko Alliance, and California Title 20 compliant for energy efficiency, this is a factory OEM pump used in brands including Nordic Hot Tubs.

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⭐ Key Features

• ✅ 2.0 HP Continuous / 3.0 BHP Motor – Strong jet performance for multi-jet spa configurations
• ✅ Oversized 2-1/2 Inch Intake – Larger suction port reduces restriction for superior flow in spas with 2-1/2″ plumbing
• ✅ Dual-Speed Operation – High speed for powerful jets; low speed for energy-efficient circulation and heating
• ✅ 56-Frame (NEMA 56Y) Motor – Larger motor frame provides enhanced thermal capacity and greater flow
• ✅ 230V / 60Hz Electrical – Standard North American 240V spa circuit compatible
• ✅ 2-Inch Side Discharge – Standard 2″ MBT discharge for universal plumbing compatibility
• ✅ Rotatable Wet End – Discharge orientation adjustable to 4 positions (12, 3, 6, and 9 o’clock)
• ✅ Insulation Class F, Thermally Protected – High ambient temperature run rated for long motor life
• ✅ Gecko Universeal Seal System – High-quality mechanical seal for reliable leak prevention
• ✅ Sealed Bearings – Factory-sealed motor bearings for extended service life
• ✅ UL Approved (E62386) – Safety tested and listed for the North American market
• ✅ California Title 20 Compliant – Meets California energy efficiency standards
• ✅ 2-Year Manufacturer Warranty – Factory-backed by Gecko Alliance

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📊 Technical Specifications

Specification	Value
Pump Type	Jet Pump (Hi-Flow)
Model / Series	Flo-Master FMXP2E (XP2e)
Part Number	05320762-5040
Manufacturer	Gecko Alliance (Aqua-Flo)
Motor Power (Continuous)	2.0 HP
Motor Power (Brake HP)	3.0 BHP
Speed Settings	Dual-Speed (2-Speed)
Motor RPM	3450 (High) / 1725 (Low)
Voltage	230V
Frequency	60 Hz
Amperage (High Speed)	8.9 A
Amperage (Low Speed)	4.7 A
Frame Type	56-Frame (NEMA 56Y)
Discharge Type	Side Discharge (SD)
Discharge Port	2 inch MBT (approximately 3.1″ OD across threads)
Suction / Intake Port	2-1/2 inch MBT, center face (approximately 3.65″ OD across threads)
Discharge Orientation	Rotatable – 4 positions (12, 3, 6, 9 o’clock)
Standard Wet End Position	12 o’clock
Drain Plug Locations	4, 6, and 9 o’clock positions
Insulation Class	Class F
Thermal Protection	Thermally protected
Maximum Water Temperature	122°F (50°C)
Seal Type	Gecko Universeal
Bearings	Sealed
Included Cable	96 inches (2.4 m) with AMP plug
Certifications	UL Approved (E62386), California Title 20 Compliant
Warranty	2 Years (Manufacturer)

⚠️ Amperage Note: Parts4Tubs and Hot Tub Outpost list this pump at 8.9/4.7A. SpaPartsOutpost (Canada) lists 10.0/3.5A. HotTubSupplies (Canada) lists 8.4/3.0A. These variations may reflect different motor production runs or measurement methods. Always verify amperage on the motor rating plate of the actual unit received.

⚠️ HP Rating Note: This pump is rated 2.0 HP continuous (operational horsepower) with 3.0 brake horsepower (BHP/THP). Some retailers list as “2 HP” while others reference “3 HP motor.” Both refer to the same pump — 2.0 HP is the continuous output rating, 3.0 BHP is the total/brake rating.

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⚡ Electrical Requirements

Electrical Spec	Requirement
Supply Voltage	230V (220-240V nominal)
Frequency	60 Hz
Phase	Single Phase
Full Load Amps (High Speed)	8.9 A
Full Load Amps (Low Speed)	4.7 A
Motor RPM (High / Low)	3450 / 1725
Power Cable	96 inches (8 ft) with AMP plug

⚠️ IMPORTANT ELECTRICAL SAFETY:

• 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 — this is mandatory per NEC.
• A dedicated circuit is required — do not share with other appliances.
• The motor must be bonded with no smaller than #8 AWG solid copper conductor per NEC.
• Always refer to the wiring diagram on the motor rating plate for correct wiring connections.
• Using incorrect voltage will damage the motor and void the warranty.

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🔗 Compatibility Guide

Frame and Wet End Specifications:

Specification	This Pump
Frame	56-Frame (NEMA 56Y)
Intake (Suction)	2-1/2 inch MBT, Center Face (~3.65″ OD across threads)
Discharge	2 inch MBT, Side Discharge (~3.1″ OD across threads)
Configuration	2-1/2″ x 2″ (larger intake, standard discharge)

⚠️ IMPORTANT — Port Size Difference: This pump (05320762-5040) has a 2-1/2 inch intake and a 2 inch discharge. This is different from the 05320761-2040 model which has 2″ x 2″ ports. Verify your hot tub’s suction plumbing size before ordering. If your spa uses 2-inch plumbing on both suction and discharge, you need the 05320761-2040 instead.

How to Measure Your Plumbing Size:

• 2 inch plumbing: Pump threads measure approximately 3-1/16″ (3.1″) outside diameter
• 2-1/2 inch plumbing: Pump threads measure approximately 3-5/8″ (3.65″) outside diameter

This Pump Replaces the Following Part Numbers:

187391, 390581, 7-187391-01, R63MWDLY-173

Compatible Motor Part Number: Emerson R63MWDLY-173

Known OEM Applications:

• Nordic Hot Tubs (select models with 2-1/2″ suction plumbing)

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🛠️ Installation Requirements

Mounting:

Requirement	Specification
Mounting Position	Horizontal
Base	Solid, level, vibration-dampening surface
Installation Type	Below water level (flooded suction) — required
Ventilation	Adequate clearance around motor for airflow
Access	Sufficient clearance for maintenance and inspection

Plumbing:

Connection	Size
Suction (Intake)	2-1/2 inch MBT (center face of pump)
Discharge	2 inch MBT (side, rotatable)
Union Type	Compression fittings (included)

Installation Notes:

• ⚠️ Pump must be installed below water level (flooded suction) — the pump casing (volute) must be completely filled with water before starting.
• ⚠️ Never run pump dry — this causes immediate seal damage and voids warranty.
• ⚠️ Hand tighten compression fittings only — do not use a wrench.
• ⚠️ Do NOT use thread seal tape (PTFE), Teflon compound, or any sealant on compression fittings. Sealants are only for NPT threaded connections.
• ⚠️ Ensure proper grounding and bonding per NEC requirements — #8 AWG solid copper conductor minimum.
• ⚠️ GFCI protection is required by code for all hot tub and spa installations.
• ⚠️ To rotate the wet end discharge position, loosen the four long bolts at the back of the motor and rotate to the desired position (12, 3, 6, or 9 o’clock).
• ⚠️ Verify your suction plumbing is 2-1/2 inch inner diameter before installing this pump. If your spa has 2 inch suction plumbing, use model 05320761-2040 instead.

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⚙️ Maintenance Guide

Routine Maintenance:

Task	Frequency	Notes
Check for leaks	Monthly	Inspect around seal plate and union connections
Inspect union fittings	Monthly	Hand tighten only if needed
Clean strainer/filter basket	As needed	Remove debris to maintain flow
Check motor amperage	Annually	Should match rating plate values
Inspect motor vents	Quarterly	Keep clear of debris and obstructions
Check mounting and bolts	Quarterly	Tighten if vibration has loosened

Warning Signs — Replace Pump If:

• Unusual noise (grinding, screeching, or humming without rotation)
• Water leaking from the seal area
• Motor trips the breaker repeatedly
• Noticeably reduced water flow at jets
• Motor overheating or shutting off on thermal protection

Seal Replacement:

• Seal Type: Gecko Universeal
• ⚠️ Replace seal at first sign of leakage — do not allow continued operation with a leaking seal.

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🎯 Ideal Applications

Application	Suitability	Notes
♨️ Hot tub jet pump (2-1/2″ suction)	Yes	Primary application — ideal for spas plumbed with 2-1/2″ suction lines
♨️ Spa dual-speed (jet + circulation)	Yes	High speed for jets, low speed for circulation and heating
♨️ Nordic Hot Tub replacement	Yes	Factory OEM pump for select Nordic models
♨️ Spas with 2″ suction plumbing	No	Use model 05320761-2040 for 2″ x 2″ plumbing instead

❓ Frequently Asked Questions

Q: What horsepower is this pump? A: This pump is rated at 2.0 HP continuous (operational horsepower) and 3.0 BHP (brake horsepower). The 2.0 HP rating represents continuous output; the 3.0 BHP represents total motor rating. Some retailers list it as “2 HP” while others say “3 HP” — both refer to the same pump.

Q: What is the difference between this pump (05320762-5040) and the 05320761-2040? A: The key difference is the intake (suction) port size. This pump (05320762-5040) has a 2-1/2 inch intake and 2 inch discharge, while the 05320761-2040 has a 2 inch intake and 2 inch discharge. Both share the same motor (2.0 HP, 56-frame, 230V, 2-speed). Choose based on your spa’s suction plumbing size.

Q: Will this fit my hot tub? A: This pump has a 56-frame motor with a 2-1/2 inch intake and 2 inch discharge. You must verify your existing pump’s frame size (48 vs 56), intake plumbing size (2″ vs 2-1/2″), and voltage before ordering. Measure across the intake pump threads — approximately 3-5/8″ (3.65″) indicates 2-1/2 inch plumbing.

Q: What voltage does this pump require? A: 230V / 60Hz. This is compatible with standard North American 240V spa circuits. All electrical installation must be performed by a licensed electrician.

Q: Does this pump run on 115V or 230V? A: This specific model (05320762-5040) requires 230V only. Using 115V will not operate the pump. Using incorrect voltage will damage the motor and void the warranty.

Q: Is this a single or dual speed pump? A: This is a dual-speed (2-speed) pump. High speed (3450 RPM) powers the therapy jets; low speed (1725 RPM) provides energy-efficient circulation and heating.

Q: What size are the ports? A: Intake (suction): 2-1/2 inch MBT (center face, approximately 3.65″ across threads). Discharge: 2 inch MBT (side, approximately 3.1″ across threads). These sizes refer to the inner diameter of the connecting hose or pipe.

Q: Does it come with a power cord? A: Yes, this pump includes a 96-inch (8 ft) cable with an AMP plug for connection to compatible Gecko and other spa control systems.

Q: What warranty is included? A: This pump carries a 2-year manufacturer warranty from Gecko Alliance. Contact Parts4Tubs for full terms and warranty claims.

Q: How do I know if my pump needs replacing? A: Signs include unusual noise (grinding or screeching), water leaking from the seal, reduced flow at the jets, or the motor repeatedly tripping the circuit breaker.

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 in the United States.

Q: Can I rotate the discharge direction? A: Yes. The wet end discharge can be rotated to 4 positions (12, 3, 6, or 9 o’clock) by loosening the four long bolts at the back of the motor and rotating the wet end.

Q: Is this pump California Title 20 Compliant? A: Yes, this pump meets California Title 20 energy efficiency standards.

🏆 Why Choose the Gecko Aqua-Flo FMXP2E 2.0HP 2-1/2″ x 2″

• ✅ Oversized 2-1/2″ intake – Reduces suction restriction for superior flow in spas plumbed with 2-1/2″ lines
• ✅ Powerful dual-speed performance – 2.0 HP continuous for strong jets with energy-efficient low-speed circulation
• ✅ Enhanced energy efficiency – XP2E design delivers greater flow while reducing operating costs, California Title 20 Compliant
• ✅ Proven 56-frame reliability – Class F insulation with thermal protection for long motor life
• ✅ Versatile installation – 4-position rotatable discharge and factory OEM cross-reference compatibility
• ✅ UL safety approved – UL E62386 certification for the North American market
• ✅ 2-year factory warranty – Backed by Gecko Alliance, a leading spa equipment manufacturer

🤝 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, wet ends, and parts available
• ✅ Dedicated customer service team

✨ Summary

The Gecko Aqua-Flo Flo-Master FMXP2E (05320762-5040) is a 2.0 HP continuous, dual-speed, 56-frame jet pump running on 230V/60Hz with an oversized 2-1/2 inch intake and standard 2 inch side discharge. Designed for hot tubs plumbed with 2-1/2 inch suction lines, it delivers powerful hydrotherapy on high speed and energy-efficient circulation on low speed. UL approved, California Title 20 compliant, and backed by a 2-year manufacturer warranty, this is a reliable factory OEM replacement for Nordic and other spa brands. Order today from Parts4Tubs for fast shipping and expert support.

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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.