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 Bulkhead Fitting for Crystal Water Filters 419-4201 is a 2.5-inch threaded coupler designed to ensure a leak-free connection in Waterway Crystal Water Cartridge and DE filtration systems. Engineered for compatibility with multiple Crystal Water models, this durable fitting promotes consistent water flow and system reliability. Made from long-lasting materials, it plays a key role in preserving filtration integrity and maintaining peak performance across demanding pool conditions.
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Leak-Free System Seal: Ensures a tight, reliable connection to prevent water loss and preserve filtration performance.
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Supports Steady Water Flow: Promotes optimal circulation within the filter, contributing to system efficiency and clarity.
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Compatible with Multiple Models: Designed for use with Crystal Water DE and Cartridge filters, including 36 to 525 sq ft systems.
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Durable Threaded Build: Constructed from robust materials with a 2.5-inch threaded design to withstand pool pressure and exposure.
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Critical Filter Connection: Essential for connecting key filter components and supporting consistent, high-functioning operation.
- (1) Waterway 419-4201 Bulkhead Fitting
- Waterway Crystal Water DE Filter Models: 570-0048 (48 sq/ft), 570-0060 (60 sq/ft), 570-0036 (36 sq/ft)
- Waterway Crystal Water Cartridge Filter Models: 570-0425 (425 sq/ft), 570-0325 (325 sq/ft), 570-0525 (525 sq/ft)

