🛁 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
🛠️ 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
🔧 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
🎛️ 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.
Union, Pump, Magic, 1-1/2"S x 1-1/2"FBT (Industry Standard) w/ O-Ring | ||
Union, Pump, Magic, 2"S x 2"FBT (Industry Standard) w/ O-Ring | ||
Union, Pump, Waterway, 2-1/2"FBT x 2-1/2"S | ||
Amp Plug, Pump, 1-Speed, 14/3, 4-Pin, 5' Cord, White | ||
Amp Plug, Pump 1 (2-Speed) 14/4, 72" Long, White |
Hot Tub Pump Collar & Union Size Chart
| 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
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:
-
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.
-
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)
-
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.
-
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.
-
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.
-
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.
-
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.
-
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.
-
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.
-
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.
-
Turn On the Power: Restore power to the hot tub by switching on the circuit breaker or reconnecting the disconnect switch.
-
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.
-
Refill the Hot Tub: Once you've confirmed that the new pump is functioning properly, refill the hot tub with water.
-
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.
-
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:
-
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.
-
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.
-
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.
-
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.
-
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.












