Laboratory High Pressure Horizontal Autoclaves (Triple Walled)Laboratory High Pressure Horizontal Autoclaves (Triple Walled) This is a triple walled unit mounted horizontal on a sturdy, heavy mild steel tubular stand duly painted. Pressure is adjustable from 10 to 20 psi. Fitted with pressure gauge, safety valve and steam release valve. Available with or without boiler. For unit fitted with S. S. Boiler, separate valves for injecting the steam into the main chamber and releasing the steam in atmosphere after use