JXi Thermal Regulator Valve Kit (TRV) for Model 200/260/400 (R0589700)
The Jandy R0589700 Thermal Regulator Valve (TRV) kit prevents condensation-related corrosion inside your JXi heater by managing return water temperature. This essential maintenance part fits JXi 200, 260, and 400 gas-fired pool and spa heaters.
Condensation Protection for Jandy JXi Heaters
The Jandy R0589700 Thermal Regulator Valve (TRV) Kit is an OEM replacement for the thermal bypass valve used in JXi gas-fired pool and spa heaters. The TRV plays a critical role in heater longevity by mixing heated return water with incoming cold water when pool temperatures are low. This raises the temperature of water entering the heat exchanger above the dew point, preventing acidic condensation from forming on the copper exchanger surfaces and causing premature corrosion.
Key Features
- Condensation Prevention: Blends warm return water into the inlet stream to keep exchanger surfaces above the dew point
- Heat Exchanger Protection: Prevents acidic condensate from corroding the copper heat exchanger during cold-start conditions
- Automatic Operation: Temperature-sensitive valve element opens and closes automatically based on water temperature
- OEM Quality: Factory-original Jandy component engineered for the JXi heater platform
Compatibility
Designed for Jandy JXi gas-fired pool and spa heaters in 200, 260, and 400 models. Part number R0589700. The TRV should be inspected during annual heater service and replaced if the valve element is stuck open or closed, which can be detected by abnormal temperature differentials across the heat exchanger.
