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.
The Swimables Pressure Switch, model SW-43-737, is engineered for use with Low Nox Heaters, ensuring safe and efficient operation. This pressure switch monitors the water pressure within the heater, automatically shutting it down if pressures fall outside the optimal range to prevent potential damage and ensure user safety. Constructed from robust materials, the SW-43-737 is built for long-lasting performance and reliability. Easy to install and replace, it is essential for maintaining the optimal function and safety of Low Nox Heaters.
- Monitors Water Pressure: Continuously monitors water pressure within the heater and automatically shuts it down if pressures fall outside the optimal range, preventing potential damage.
- Enhances Safety: Plays a crucial role in ensuring user safety by preventing the heater from operating under unsafe pressure conditions.
- Robust and Reliable Construction: Made from durable, high-quality materials for long-lasting performance and reliability.
- Easy to Install and Replace: Simplifies maintenance with an easy installation and replacement process, essential for maintaining the optimal function and safety of Low Nox Heaters.
- Raypak Digital Low Nox Heater Models: 207A, 267A, 337A, 407A
- Raypak Heater Models: R185A, R265A, R335A, R405A, 264A, 404A
Note: This Pressure Switch may be compatible with your heater, please refer to your systems owners manual to ensure compatibility.

