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Internal Frost Protection Valve


The FROSTi valve has been developed to meet the requirements of thermosiphon and pumped solar hot water systems installed in frost prone environments. 

IMPORTANT NOTE: The FROSTi is not recommended for known freeze zones. A closed circuit solar water heater system with an approved  anti-freeze heat transfer fluid should be used for these locations.


  • Stainless steel seat
  • Delveloped for Frost prone environments
  • Stainless steel springs
  • Body DR Brass
  • G3/4” – Female Connection
  • 20mm 3/4” Female BSP

FROSTi Brochure