The Waterway EX2 PD-110X-1W87 hot tub pump has two speeds that run at 3450 rpms on high and 1750 rpms on low speed on 115 volts. The thread size is referenced as 2 inches with an actual OD dimension on 3 inches. This model EX2 Power Defender in used in select smaller Coast Spas that are dual voltage or run on 120 volts.
- Waterway P/N # PD-110X-1W87
- Model: PD-15-2NE
- HP: 1.5 SPL
- Series: EX2 Power Defender
- Intake size: 2.0" (Actual 3" O.D.)
- Discharge size: 2.0" (Actual 3" O.D.)
- Volts: 110 - 120 @ 60Hz
- Amps: 9.5H - 2.2L
- Cord: 4ft with AMP plug included
IMPORTANT
The Waterway EX2 Power Defender hot tub pump is a different series from the Executive series. The EX2 series pumps are not interchangeable with the Executive series due to their different-size wet-end plumbing connection positions. The Waterway EX2 series can also be replaced with an Aqua-Flo or LX pump with the same volts and amp ratings.
Horsepower ratings
Choosing a pump based on Horsepower (HP) can be incorrect. The horsepower listed in your spa manual or on the old pump's label may be overinflated, inaccurate, or even left blank. Horsepower ratings on hot tub pumps are often listed as SPL-HP, BHP, MBHP, RHP or S-HP, which is not the same as continuous operating horsepower. Installing an oversized pump in your hot tub can cause significant damage.
To avoid choosing the incorrect pump, confirm if it’s a 48 frame or 56 frame, then use the high-speed Amperage rating listed on the old pump's label to find the correct replacement instead of the horsepower. The amperage rating is listed with both high/low speed for a 2-speed pump.
Determining hot tub pump thread size
Hot tub pump plumbing sizes are nominal and not the actual outside diameter (O.D.) of the threaded intake or discharge. To confirm your old pump thread sizes, use a tape measure and check the diameter of your old pump thread size.
- 1.5” Pump thread measures approx. 2-3/8” Outside Diameter
- 2.0” Pump thread measures approx. 3” Outside Diameter
- 2.5” Pump thread measures approx. 3-5/8” Outside Diameter
Amperage ratings
New hot tub pump amperage ratings may vary slightly for pumps with the same performance rating. The RPMs remain the same 3450 for high-speed and single-speed pumps and 1725 for low-speed for two-speed pumps.
