Tube-O suction and discharge fittings for R-134a refrigerant. The suction fitting has 7/8″-14 threads for the suction hose, and 1-14 thread for the compressor fitting. The fitting also has a low side 14mm charge port. The discharge fitting has 3/4″-16 threads for the discharge hose, and 1-14 thread for the compressor fitting. The fitting also has a 16 mm charge port. Please note that if your compressor has the same size fittings on the suction and discharge it is tube-o. See the pictures for samples.
The fitting is made of steel and uses O-rings on both connections. This fitting is common on York and Sanden compressors. Please make sure the York you are mounting this to is not a Rota lock fitting. Rota lock fittings use white Teflon seals.