In reducing cam and groove couplings, the coupler is the first size in the part number; (i.e., a ADA4030 is a 4" coupler to a 3" adapter).
Couplers are supplied standard with a Buna-N gasket, other gasket types are available.
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Item #

Size

Material

RDA2030EZ N/A 2 x 3 in N/A 316 Stainless Steel
ADA2030EZ N/A 2 x 3 in N/A Aluminum
RDA3020EZ N/A 3 x 2 in N/A 316 Stainless Steel
ADA3020EZ N/A 3 x 2 in N/A Aluminum
RDA3040EZ N/A 3 x 4 in N/A 316 Stainless Steel
ADA3040EZ N/A 3 x 4 in N/A Aluminum
RDA4020EZ N/A 4 x 2 in N/A 316 Stainless Steel
ADA4020EZ N/A 4 x 2 in N/A Aluminum
RDA4030EZ N/A 4 x 3 in N/A 316 Stainless Steel
ADA4030EZ N/A 4 x 3 in N/A Aluminum
RDA6040EZ N/A 6 x 4 in N/A 316 Stainless Steel
ADA6040EZ N/A 6 x 4 in N/A Aluminum
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