Flojet # 21000-233B Air Inlet Port 1/4" Tubing

Flojet 21000-233B Air Inlet Port, for 1/4"OD Push-In Tubing, JG John Guest Type, Plastic, Buna O-Ring. Pack of 12 fittings. Used for Air/CO2 Inlet Port on AOD Air Driven Diaphragm Pumps.. 21000-233, 21000233B, John Guest style push-fit fittings are compatible with any standard ASTM size PEX, copper tubing, and CPVC tubing. However, push-fit fittings cannot be used with PEX-Al-PEX tubing. There may be writing on the tubing that says ASTM or AI