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In reducing couplings, the cam and groove end is the first size given in the part number. (i.e., a 4030-C-AL is a 4" coupler to a 3" hose shank).

Pressure rating is based on the seal of the mating part.
Unit of Measure

Specifications

Size

 N/A 4 x 3 in

Material

 N/A Aluminum

Opt Qty

 N/A 10

Type

 N/A Male Adapter x Female NPT