Find your parts diagram
Sticker on the pump body (the part with the basket), not on the motor. Motor labels from Century, A.O. Smith or Regal won't match parts.
Label on the side of the tank near the base. Size is in sq ft, e.g. 420 sq ft = C4030 or CCP420.
Rating plate inside the front access panel. Note the BTU and gas type (NG or LP).
Molded into the body or printed on top. Robotic cleaners: on the power supply.
Still not sure? Call (818) 818-6559 and we'll find it for you.
OEM Waterway Manifold Nut for Crystal Water DE Filters 718-4320 is a precision-engineered component designed to secure the manifold assembly within your Waterway Crystal Water DE filter. Built from durable materials and manufactured to exact specifications, this nut ensures a stable fit that supports proper system operation. It helps maintain internal pressure balance and alignment, playing a key role in keeping your DE filtration system functioning efficiently and reliably.
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Secures Filter Manifold: Keeps the internal manifold assembly firmly in place, ensuring stable filter performance.
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Reliable and Tight Fit: Provides a secure hold that prevents movement or misalignment under operating pressure.
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Designed for Crystal Water Filters: Built for compatibility with all Waterway Crystal Water DE filter models.
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Manufacturer-Spec Construction: Meets OEM standards to ensure consistency, strength, and long-lasting use.
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Supports Filtration Efficiency: Helps maintain internal component stability for smooth and effective filtration cycles.
- (1) Waterway 718-4320 Manifold Nut
- Waterway Crystal Water DE Filters

