Area Valve Service Units are in single stage medical gas control the output pressure of the supply source to supply medical equipment via connections to terminal units or tot be applied directly to the patient; and when necessary, to isolate between the supply source and the supply source and the utilibization points.The body of the unit is made of stainless steel for long term scenarios where durability of the product is important. Medical gas monitoring and signalizing systems valve box provide activation off medical gas flow, permanent monitoring of medical gas pressure including emergency supply of serviced area in the event of central madical gaz supply failure.