Pentair Thermal Regulator | MasterTemp | 474989 FG1002 The spider gasket seals each

The spider gasket seals each port channel inside the multiport valve body

Also known as: R9103

OEM Brand Product Name Part Number Notes Dimension One Spas — 1561-00 2001 and newer models only @Home Hot Tubs (by Dimension One Spas) — 1561-00 2001 and newer models only (This is not an exhaustive list

The product produces better results than acid alone

Size: 2 lb Bottle

Pentair Thermal Regulator | MasterTemp | 474989 FG1002 The spider gasket seals eachThe Pentair Thermal Regulator (474989) is the OEM replacement thermal regulator for the Pentair MasterTemp 125 pool heater. IMPORTANT: HEATER COMPONENTS PROFESSIONAL SERVICE REQUIRED Gas and electrical heater components must be serviced by a licensed pool professional or qualified HVAC technician. Do not attempt to service gas or high voltage components without proper certification. The thermal regulator maintains the MasterTemp 125's operating