The A/C Orifice Tube of the Chevrolet Silverado regulates the flow of liquid refrigerant from the high-pressure discharge side of the system to the low-pressure suction side of the system. This cools the cabin on hot days. The A/C Orifice Tube is not considered a variable valve but a fixed restriction. It performs the function of reducing the pressure of refrigerant entering the evaporator. This change in pressure allows the fluid to evaporate and absorb heat. If there is excessive flow, the compressor will cycle on or off to meet the demand. Due to its location, the A/C Orifice Tube acts like an ultrafine screen that captures dirt or metal flakes before they can damage sensitive parts. This same function, however, also means that dirt builds up in the mesh and reduces the cooling function when idling. The irregular gauge readings that vary between cruising speeds and stop-and-go traffic are caused by a clogged A/C Orifice Tube. Earlier trucks applied the same fixed-bore concept while some other Chevrolet climate systems incorporate a thermostatic expansion valve that varies flow with moving parts and a temperature sensor. However, the Silverado line has retained the simple tube for cost and reliability. Should you decide to replace a contaminated A/C Orifice Tube, your pressures will balance out, it will prevent the evaporator from freezing up, and it will return stable vent temperatures. This is important for any Chevrolet driver enjoying a ride in a Silverado.
Each OEM Chevrolet Silverado A/C Orifice Tube we offer is competitively priced and comes with the assurance of the manufacturer's warranty for the part. Furthermore, we guarantee the speedy delivery of your orders right to your doorstep. Our hassle-free return policy is also in place for your peace of mind.