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

Couplers are supplied standard with a Buna-N gasket, other gasket types are available.
Unit of Measure

Specifications

Size

4 x 3 in

Material

Aluminum

Opt Qty

5

Type

Female Coupler x Male NPT