The 7590U-10 adapter must be used to connect to the 7590U and 7591U Chek-Lok. This insures a proper connection to open the check mechanism. A built in nylon gasket provides a gas tight seal.
Unit of Measure


Inlet Connection

N/A 1-5/8" UNF

Outlet Connection

N/A 3/4" F. NPT

A. Wrench Hex Flats

N/A 1-3/4 in

B. Approximate Length

N/A 1-13/16 in

Product Type

N/A Union Style Adapters


N/A RegO