Freon pressure gauge are used in refrigeration systems for   testing. 

Oour dial features R-12,  R-22 and R-502 or R-304 scale.  Suitable for 

use on all freon service application,  for example: refrigeration,refrigerant 

recovery and recycling,etc. Filled with damping liquid inside,the stainless 

stee freon prare suitabe for locations where the working environment shock largely.

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