? Waterway Genesis Bath Pump (321JF10-0150) – 1.0 HP 115V Single-Speed Jetted Bathtub Pump

American-made quality with energy-efficient design for reliable jetted bath performance

? Product Overview

The Waterway Genesis 321JF10-0150 is a 1.0 HP single-speed jetted bathtub pump designed, engineered, and manufactured in the USA by Waterway Plastics — a company committed to innovation and excellence since 1973. The Genesis Generation represents Waterway’s energy-efficient bath pump line, delivering strong jet performance at 9.0 amps on standard 115V household power.

This OEM-specification pump features a built-in air switch for convenient tub-side on/off control and includes a 3-foot NEMA power cord with 3-prong plug, ready for direct connection. The 1-1/2″ male buttress thread (MBT) connections on both bottom suction and center discharge provide industry-standard compatibility. Three anti-vibration motor mount rubber pads are included for quiet, stable operation.

Waterway has recently upgraded the Genesis bath pump with a thicker discharge wall on the volute for increased strength and a new highly engineered glass reinforced co-polymer housing material (now manufactured in gray for easy identification). This is the same premium material used in Waterway’s high-end pool pumps and filters. The Genesis also features a self-draining volute design and two 3/8″ barbed auxiliary ports on the pump face (factory-plugged, can be drilled out if needed for additional line connections).

⚠️ This is the OEM version (321JF10-0150). Unions are sold separately (Waterway 0602-15B). The package version with two unions included is 321JF10-1150.

✨ Key Features

✅ 1.0 HP Motor (9.0A) – Energy-efficient single-speed operation at 3450 RPM for strong jet pressure

✅ 115V / 60Hz Operation – Standard North American household voltage, operates on a 15A dedicated circuit

✅ Built-In Air Switch – Integrated pneumatic on/off switch for convenient tub-side control

✅ 3-Foot NEMA Power Cord – 3-prong plug included, ready for direct connection

✅ 1-1/2″ MBT Connections – Male buttress thread suction and discharge (approximately 2-3/8″ OD)

✅ Self-Draining Volute Design – Special design allows all water to drain from the pump casing

✅ Glass Reinforced Co-Polymer Housing – New upgraded material (gray) for increased strength and UV resistance

✅ Three Anti-Vibration Pads Included – Rubber motor mount pads for quiet, stable operation

✅ Two 3/8″ Barbed Auxiliary Ports – Factory-plugged ports on pump face, can be drilled out for additional line connections

✅ 4-Bolt Volute Design – Secure, serviceable wet end assembly

✅ UL and CSA Listed – Dual safety certification for North American residential installations

✅ Made in the USA – Designed, engineered, and manufactured by Waterway Plastics

✅ Flow Rate: 160 GPM – Strong hydraulic performance for multi-jet bathtubs

⚙️ Technical Specifications

Specification	Value
Manufacturer	Waterway Plastics (USA)
Model	Genesis Generation
MPN	321JF10-0150 (OEM)
Horizon Part	34-270-2004
Pump Type	Jetted Bathtub Pump
Motor Power	1.0 HP
Speed Settings	Single Speed
Motor RPM	3450 RPM
Voltage	115V (110V-120V)
Frequency	60 Hz
Amperage	9.0A
Flow Rate	160 GPM
Wet End Configuration	Front/Top
Suction Style	Bottom
Suction Port	1-1/2″ MBT (approximately 2-3/8″ OD)
Discharge Style	Center
Discharge Port	1-1/2″ MBT (approximately 2-3/8″ OD)
Auxiliary Ports	Two 3/8″ barbed (factory-plugged)
Volute Fastening	4 Bolts
Housing Material	Glass reinforced co-polymer (gray)
Cord	3 ft NEMA, 3-prong plug
Air Switch	Built-in (integrated)
Anti-Vibration Pads	3 included
Self-Draining	Yes
Unions	NOT included (OEM version) — sold separately
Certifications	UL, CSA
Warranty	1 year manufacturer

? Dimensions

Measurement	Value
Height	7-1/4 inches
Width	5-3/8 inches
Length	12-1/2 inches

? All four Genesis bath pump models share the same compact 7-1/4″ × 5-3/8″ footprint. Only the length varies slightly between models. The 321JF10 (1.0 HP) is one of the most compact configurations in the Genesis range.

⚡ Electrical Requirements

Electrical Spec	Requirement
Supply Voltage	115V (110V-120V)
Frequency	60 Hz
Phase	Single
Full Load Amps	9.0A
Cord Included	Yes — 3 ft NEMA, 3-prong plug
Minimum Circuit Breaker	15A dedicated circuit
Wire Size	14 AWG minimum (for 15A circuit)

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

? At 9.0 amps, the 321JF10 operates within the NEC 80% continuous load rule for a 15A circuit (12A maximum continuous).

? Compatibility Guide

This Pump:

? Suction: 1-1/2″ MBT — Bottom ? Discharge: 1-1/2″ MBT — Center ? Auxiliary Ports: Two 3/8″ barbed (factory-plugged) ? Cord: 3 ft NEMA included ? Unions: NOT included — purchase separately (Waterway 0602-15B)

321JF10-0150 vs 321JF10-1150:

Version	MPN	Unions	Air Switch	Cord
OEM (this pump)	321JF10-0150	NOT included	Yes	Yes
Package	321JF10-1150	2× included	Yes	Yes

Both are the same pump and motor — only the union packaging differs.

Replaces:

The Waterway Genesis 321JF10-0150 is a direct replacement for a wide range of OEM bath pumps:

Original Part Number	Manufacturer / Notes
0002F88C	OEM bath pump
0005E88C	OEM bath pump
0009F88C	OEM bath pump
0010E88C	OEM bath pump
0010F88C	OEM bath pump
001F88C	OEM bath pump
0034F88C	OEM bath pump
0036F88C	OEM bath pump
A002E88C	OEM bath pump
310-2130	OEM bath pump
5014-003	OEM bath pump
600011	OEM bath pump
NR2A-C	Balboa / Vico
R75A-C	OEM bath pump
WW100	Waterway designation
607500CD-RS	OEM bath pump
904205	OEM bath pump
320022	OEM bath pump
WWP-10-1440	OEM bath pump
BT7305	Hydrabaths pump

Also replaces: Hydr-O-Power, EGIS, and select Emerson bath pump models.

Cross-Reference Part Numbers: 34-270-2004, 321JF10-0150, 321JF10-1150, 1-00-0125PK, 15-350-2290, WW100, WW321JF100150

Shaft Seal Replacement: Waterway part 35-423-1060

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?️ Installation Requirements

Mounting:

Requirement	Specification
Mounting Position	Horizontal
Base	Solid, level surface
Anti-Vibration Pads	3 rubber pads included (loose in box)
Ventilation	Ensure adequate airflow around motor
Access	Allow clearance for union connections and maintenance

Plumbing:

Connection	Size
Suction	1-1/2″ MBT (bottom)
Discharge	1-1/2″ MBT (center)
Unions	Sold separately — Waterway 0602-15B (1-1/2″ FBT × 1-1/2″ Slip)
Auxiliary Ports	Two 3/8″ barbed (factory-plugged, drill out if needed)

Installation Notes:

⚠️ Pump must be installed below water level (flooded suction) for proper operation ⚠️ Never run pump dry — causes seal damage ⚠️ Ensure proper grounding and bonding per NEC requirements ⚠️ GFCI protection is required by code ⚠️ This pump has a built-in air switch — if the motor does not start when plugged in, the air switch may be in the OFF position. Press the air button to activate ⚠️ Air button and air tubing are sold separately ⚠️ Unions are NOT included with the OEM version — purchase Waterway 0602-15B separately or order the package version 321JF10-1150 ⚠️ Place three rubber anti-vibration pads (included) under the motor before mounting

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? Maintenance Guide

Routine Maintenance:

Task	Frequency	Notes
Check for leaks	Monthly	Around seal plate and union connections
Inspect unions and o-rings	Monthly	Tighten if needed
Check air switch function	Monthly	Ensure reliable on/off operation
Inspect anti-vibration pads	Quarterly	Replace if deteriorated
Check volute bolts	Quarterly	Ensure all 4 bolts are secure
Inspect motor vents	Quarterly	Keep clear of debris

Seal Replacement:

? Seal Part Number: Waterway 35-423-1060 ⚠️ Replace seal at first sign of leakage from the seal plate area

Warning Signs — Replace Pump If:

• Unusual noise (grinding, screeching, or humming without starting)
• Water leaking from seal area
• Motor trips breaker repeatedly
• Reduced water flow or weak jet pressure
• Motor overheating or burning smell
• Air switch no longer activates motor

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?️ Waterway Genesis Bath Pump Family

The Genesis Generation is Waterway’s complete energy-efficient bath pump range. All models share the same compact housing design with bottom suction and center discharge:

Model	HP	Amperage	Flow Rate	Horizon Part
321FF10	0.5 HP	5.5A	—	34-270-2000
321HF10	0.75 HP	7.5A	—	34-270-2002
321JF10	1.0 HP	9.0A	160 GPM	34-270-2004
321NF10	1.5 HP	13.0A	175 GPM	34-270-2006

⚠️ The 321NF10 (1.5 HP / 13.0A) requires a 20A dedicated circuit. All other models operate within a 15A circuit.

⚠️ Always match by amperage when selecting a replacement — amperage is the most reliable specification across all sources.

---

? Ideal Applications

Application	Suitability	Notes
? Medium jetted bathtub (4-6 jets)	✅ Ideal	1.0 HP / 160 GPM provides strong jet pressure
? Standard whirlpool bathtub	✅ Yes	Most popular Genesis model for standard installations
? Replacement for 9.0A bath pump	✅ Yes	Direct match for all cross-referenced part numbers
? OEM bath pump replacement	✅ Yes	Replaces 20+ OEM part numbers across multiple brands
? Large jetted bathtub (6-8+ jets)	⚠️ Consider	321NF10 (1.5 HP / 13.0A / 175 GPM) provides more power
♨️ Hot tub jet pump	❌ No	Designed for jetted bath applications

❓ Frequently Asked Questions

Q: What horsepower is this pump? A: This is a 1.0 HP single-speed bath pump operating at 115V/60Hz and drawing 9.0 amps at 3450 RPM.

Q: What is the difference between 321JF10-0150 and 321JF10-1150? A: Both are the same pump and motor. The 321JF10-0150 is the OEM version without unions. The 321JF10-1150 is the package version that includes two 1-1/2″ unions. Both include the 3-foot NEMA cord and built-in air switch. Verify with Parts4Tubs which version is in stock.

Q: Does this pump include unions? A: No, this is the OEM version (321JF10-0150) and unions are sold separately. Purchase Waterway union 0602-15B (1-1/2″ FBT × 1-1/2″ Slip) as needed, or ask Parts4Tubs about the package version 321JF10-1150.

Q: Does this pump include a power cord? A: Yes, a 3-foot NEMA power cord with 3-prong plug is included.

Q: What are the two small ports on the pump face? A: These are 3/8″ barbed auxiliary ports that come factory-plugged. If your installation requires additional line connections, they can be drilled out easily.

Q: Can I run this on a standard 15A circuit? A: Yes. At 9.0 amps, the 321JF10 operates within the NEC 80% continuous load rule for a 15A circuit. A dedicated GFCI-protected circuit is required.

Q: What voltage does this pump require? A: 115V (110V-120V) / 60Hz. Do NOT connect to 230V — this will damage the motor.

Q: Does this pump come with an air switch? A: Yes, the air switch is built into the pump. The air button and air tubing are sold separately.

Q: What is the replacement seal part number? A: The shaft seal replacement is Waterway part 35-423-1060.

Q: Can I use this to replace an LX WCH150? A: Both the Genesis 321JF10 and the LX WCH150 draw 9.0 amps at 115V with 1-1/2″ MBT connections. However, the physical dimensions differ. Verify your enclosure space and plumbing orientation before swapping brands.

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

? Why Choose the Waterway Genesis 321JF10

✅ Made in the USA – Designed, engineered, and manufactured by Waterway Plastics since 1973

✅ Energy Efficient – Genesis Generation design delivers strong performance at only 9.0 amps

✅ 160 GPM Flow Rate – Powerful hydraulic performance for multi-jet bath systems

✅ Upgraded Housing – New glass reinforced co-polymer material for increased strength and durability

✅ Self-Draining Design – Hygienic operation with complete water drainage when motor stops

✅ Anti-Vibration Pads Included – Three rubber motor mount pads for quiet, stable operation

✅ Cord and Air Switch Included – 3-foot NEMA cord and built-in air switch, ready for installation

✅ Massive Cross-Reference List – Replaces 20+ OEM part numbers across multiple bath manufacturers

✅ UL and CSA Listed – Dual safety certified for North American residential installations

? 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

✅ Unions (0602-15B), seals (35-423-1060), and accessories available

✅ Dedicated customer service team

? Summary

The Waterway Genesis 321JF10-0150 is a 1.0 HP American-made bath pump delivering 160 GPM at 9.0 amps on 115V for strong, energy-efficient jet performance on a standard 15A circuit. Featuring a built-in air switch, 3-foot NEMA cord, self-draining volute, upgraded glass reinforced co-polymer housing, and anti-vibration pads, it replaces over 20 OEM part numbers across multiple bath manufacturers. UL and CSA listed with a 1-year warranty. Order today from Parts4Tubs for 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	$6.36Max: 330Min: 1Step: 1Add 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	$8.00Max: 499Min: 1Step: 1Add 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	$14.77Max: 111Min: 1Step: 1Add to cart
	1 Speed Pump / Blower / AMP Cord | 21086 Amp Plug, Pump, 1-Speed, 14/3, 4-Pin, 5′ Cord, White	$24.71Max: 393Min: 1Step: 1Add to cart
	Balboa Amp Plug 21087 (For 2 Speed Pumps) Amp Plug, Pump 1 (2-Speed) 14/4, 72″ Long, White	$31.72Max: 229Min: 1Step: 1Add 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″ OD59mm
2″Female Buttress Thread (FBT)	3.1″ / 78mm(Tip to Tip) Measurement	3-1/16″78mm	3-3/8″81mm	2-15/16″ OD75mm
2.5″Female Buttress Thread (FBT)	3.6″ / 91mm(Tip to Tip) Measurement	3-5/8″91mm	4-1/4″108mm	3-7/16″ OD87mm

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.

Brand	Waterway
Speed	1 Speed (1-Spd)
Motor Voltage	115v
Motor Amperage/Wattage	9.0A
Pump Model	Genesis
Suction Pipe Size	1-1/2"
Suction Connection Type	Male Buttress Thread (mbt)
Suction Style	Bottom
Discharge Pipe Size	1-1/2"
Discharge Connection Type	Male Buttress Thread (mbt)
Discharge Style	Center
Drain Plug Location	None
H Part#	34-270-2004
Horsepower	0.75, 0.75 HP, 0.75hp