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
Items
Type E Reducing Cam and Groove Coupler

Type E Reduced Cam & Groove Couplings (Male Adapter x Hose Shank)

Type E Reducing Cam and Groove Coupler

Type E Reduced Cam & Groove Couplings (Male Adapter x Hose Shank)

Type E Reducing Cam and Groove Coupler

Type E Reduced Cam & Groove Couplings (Male Adapter x Hose Shank)

Type E Reducing Cam and Groove Coupler

Type E Reduced Cam & Groove Couplings (Male Adapter x Hose Shank)

Type E Reducing Cam and Groove Coupler

Type E Reduced Cam & Groove Couplings (Male Adapter x Hose Shank)
Size N/A 2 x 1-1/2 in N/A 2 x 1-1/2 in N/A 3 x 2 in N/A 3 x 2-1/2 in N/A 4 x 3 in
Material N/A Aluminum N/A 316 Stainless Steel N/A 316 Stainless Steel N/A 316 Stainless Steel N/A Aluminum
Opt Qty N/A N/A N/A N/A N/A 10
Type N/A Male Adapter x Hose Shank
Notes N/A Parts are produced as a welded fabrication. N/A Parts are produced as a welded fabrication. N/A Parts are produced as a welded fabrication. N/A N/A