coupler contains r134a adapter for refrigerant fill the infusion tank. refrigerant gas cylinder hose. servicing car air condition

134a adapter air automobile background barrel brass car charging check compressed conditioner conditioning contains cool cooling coupler cylinder dual equipment fill filling freon gas gauge halogen hose hvac industrial industry infusion instrument liquid maintenance measurement meter power pressure psa pump r134a refill refrigerant refrigeration repair service servicing steel tank technician test tool transportation valve