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RDA4030EZ by Dixon Valve | EZ Boss-Lock Cam & Groove Reducer (Jump Size) | Type DA | 4" Coupler x 3" Adapter | 316 Stainless Steel


Dixon Valve
EZ Boss-Lock Cam & Groove Jump Size Coupling | Type DA | Coupler x Adapter

Designed for use with liquids.

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Some products have predefined quantity discounts that will apply automatically, those pages have a table near the price describing the discount teirs.

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Can I get free shipping?

Shipping will calculate as free instantly if your order value exceeds $5000.

Some exceptions apply.

Free Freight is only available for the Contiguous USA.

Specifications for Variant SKU: RDA4030EZ Dixon
Brand: EZ Boss-Lock
MAWP: 100
Shape (Orientation): Straight
Cam Type: Other
Ends Configuration: 4in Female Cam & Groove X 3in Male Cam & Groove
Material(s): 316 Stainless Steel
  • Nitrile rubber gasket standard.
Safety Notes:
  • Under no circumstances should cam and groove couplings be used for compressed air or steam service!
  • Under no circumstances should the EZ Boss-Lock cam arms be used on any fitting not specifically designed for their use. Pressure rating recommendations are based on the use of mating Dixon fittings at ambient temperature 70°F / 21°C with a standard seal installed. For use at elevated temperature or other unusual operating conditions, consult Dixon.
How It Works:
  • To make a connection, simply slide the adapter into the coupler and with normal hand pressure, press the cam levers down.
  • Uncoupling is as quick and simple as coupling. Just lift the cam arms and remove the adapter.
  • Produced to interchange with all product produced to Commercial Item Description A-A-59326D.
356T6 Aluminum
Part Number
316 Stainless Steel
Part Number
Coupler x Adapter
Max. Operating Pressure
- RDA2030BL* 2" x 1" 125 PSI
ADA2030EZ* RDA2030EZ* 2" x 3" 125 PSI
ADA3020EZ RDA3020EZ 3" x 2" 125 PSI
ADA3040EZ* RDA3040EZ* 3" x 4" 100 PSI
ADA4020EZ* - 4" x 2" 100 PSI
ADA4030EZ RDA4030EZ 4" x 3" 100 PSI
ADA6040EZ* RDA6040EZ 6" x 4" 75 PSI

* Parts are produced as a welded fabrication

Dixon Valve & Coupling

Dixon Valve & Coupling

Dixon, founded in 1916, is a premier manufacturer and supplier of hose couplings, valves, dry disconnects, swivels, and other fluid transfer and control products. Our global reach includes a wide range of products for numerous industries including petroleum exploration, refining, transportation, chemical processing, food and beverage, steel, fire protection, construction, mining, and manufacturing.

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