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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

Specifications

Size

 N/A 3/4 in

Material

 N/A Brass

Hexagonal Wrench Flats (A)

 N/A 1-3/4 in

Approximate Length (B)

 N/A 1-7/8 in

Rating

 N/A Underwriters Laboratories (UL®) Listed

Alternate Part Number

 N/A 7590U-10

Connection

Inlet Connection Size

 N/A 1-5/8 in

Outlet Connection Size

 N/A 3/4 in

Inlet Connection Type

 N/A Unified Fine Thread (UNF)

Outlet Connection Type

 N/A Female National Pipe Thread (FNPT)