Designed specifically for use with RegO 7572FC and 7580FC Chek-Lok® Excess Flow Valves. The adapter’s operating handle opens and closes the equalizing stem in these older style Check-Lok® valves. This adapter is designed to eliminate the need for gas to flow from the Chek-Lok® when the adapter is installed or removed. A shutoff valve, such as a full port ball valve must be installed at the outlet of the 7580F-20.
Unit of Measure



  • Built in nylon gasket provides a gas tight seal.
  • Adapter can be installed without depressing the equalizing stem of the Chek-Lok®.
  • Design eliminates the need to slug the excess flow feature of the Chek-Lok® when removing the adapter.
  • Built in bleeder valve allows for controlled discharge of liquid before removing the adapter.


Inlet Connection

N/A 3/4" M. NPT

Outlet Connection

N/A 3/4" F. NPT

Approximate Length

N/A 1-3/4 in

Wrench Hex Flats

N/A 3-9/16 in

Product Type

N/A Liquid Evacuation Adapter


N/A RegO