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Schrader WATER TANK PRESSURE VALVE ("Snifter" Valve) Available at Plumbing Houses in 1/8 or 1/4 NPT.

To WINTERIZE when not in use
  1. Shut valve off
  2. Remove HEATER and RUBBER COVER. Make sure valve is shut off.
  3. Grasp THERMALINE HANDLE and remove HEATER WELL THUMBNUT (knurled fitting) n handle stem. Remove HEATER WELL from inside of stem.
  4. Insert BUSHING and AIR VALVE ACCESSORIES shown at left.
  5. Force air into WATER OUTLET (Where the water line was connected) until water has been completely removed through the hole in the HANDLE STEM. A hand tire pump can be used where pressurized air is not available.
  6. Replace HEATER WELL and THUMBNUT.
  7. Cap or plug holes properly. Store HEATER and ACCESSORIES away.

warning

Failure to remove water from unheated Thermalines during freezing weather can cause them to freeze and cut the plunger or break other watertight parts.

3/4 to 1/8 or 1/4 NPT Bushing to fit "Snifter" Valve

THERMALINE WATER OUTLET