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Product Review

  • Directly replaces part numbers 77707-0010 and 38000-0007S.
  • Wide Compatibility: Compatible with MasterTemp models 125, 200, 250, 300, 333, 400, and Sta-Rite Pool Spa Heaters models SR200, SR333, SR400.
  • Simple Installation: It's located between the inlet and outlet water connections on the water manifold. No special tools are needed - replacement takes just minutes.
  • Regulating Temperature: Our thermal regulator ensures your pool or spa heater operates efficiently, providing quick heating and reliable temperature maintenance for optimal comfort.
  • The product includes regulators, springs, valve covers, a clip, and replacement O - rings.