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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.
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On the Pentair MasterTemp 125 461059 Heater diagram
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Other parts on the same Pentair MasterTemp 125 461059 Heater
The Pentair Manifold O-Ring Kit, model 77707-0120, is designed for MasterTemp and Max-E-Therm heaters. This kit includes all necessary O-rings to ensure a secure and leak-proof seal for the manifold assembly, thus maintaining optimal efficiency and operation of the heater. Crafted from high-quality, durable materials, these O-rings are built to withstand the rigors of regular use and harsh pool environments. Regular replacement of these O-rings is essential for preventing leaks, ensuring safety, and extending the lifespan of your heater.
- Perfect Compatibility: Specifically designed for use with MasterTemp and Max-E-Therm heaters, ensuring a precise fit and reliable performance.
- Complete Kit: Includes all necessary O-rings to guarantee a secure and leak-proof seal for the manifold assembly, maintaining optimal heater efficiency.
- Durable Materials: Crafted from high-quality, durable materials to withstand the rigors of regular use and harsh pool environments, ensuring long-lasting reliability.
- Essential Maintenance: Regular replacement of these O-rings is crucial for preventing leaks, ensuring the safety of the heater, and extending its lifespan.
- Optimal Performance: Ensures the smooth and efficient operation of your heater, contributing to consistent and effective pool or spa heating.
- (1) Pentair Manifold O-RIng
- (12) Pentair Tube Sheet Coil O-Rings
- Pentair MasterTemp Heaters
- Pentair Max-E-Therm

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