40022ALTAL by Dixon Valve | Cam & Groove TTMA Flange Adapter | 22-1/2° Elbow | 4" Adapter x 4" TTMA Flange | AluminumHow It Works: To make a connection, simply slide the adapter into the coupler and with normal hand pressure, press the cam levers down. Uncoupling is as quick and simple as coupling. Just lift the cam arms and remove the adapter. Safety Note: Under no circumstances should cam and groove couplings be used for compressed air or steam service! Pressure rating is based on the seal of the mating part. Pressure rating recommendations are based on the use of