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.
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Item #

Size

Material

2015-E-AL N/A 2 x 1-1/2 in N/A Aluminum
2015-E-SS N/A 2 x 1-1/2 in N/A 316 Stainless Steel
3020-E-SS N/A 3 x 2 in N/A 316 Stainless Steel
3025-E-SS N/A 3 x 2-1/2 in N/A 316 Stainless Steel
4030-E-AL N/A 4 x 3 in N/A Aluminum
4030-E-SS N/A 4 x 3 in N/A 316 Stainless Steel
5040-E-AL N/A 5 x 4 in N/A Aluminum
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