Arc-Zone gave me these part numbers to the fitting for everlast machines

CK-1006
Fail Safe Ferrule.
Note: For use with CK-2564 Quick-Release Male Hose Plug.
CK-2564
Quick-Release Male Hose Plug. Note for use with CK-1006 Fail Safe Ferrule.

It's about 8.00$ for both 6 for the connector and 2 for the ferrule you could use a small pipe clamp also