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Aluminium reducing coupler adapter, 4 inch socket to 2 inch plug, cam and groove, locking arm

Dixon Valve & Coupling Co.

Dixon Valve & Coupling Co. 4020-DA-AL Reducing Coupler/Adapter 4 x 2 In 100psi

SKU CH-06PP-PTYB3

Aluminium cam-and-groove reducer joins a 4 in socket to a 2 in plug, rated 100 psi at 70 °F with a nitrile gasket and locking arm

  • Reduces line size from 4 in socket to 2 in plug
  • Rated for 100 psi working pressure at 70 F
  • Aluminium body resists corrosion in fluid transfer
  • Nitrile gasket seals reliably across temperature swings
  • Locking arm secures connection without extra tools

4 in x 2 in Reducing Coupler/Adapter

This Dixon reducing coupler/adapter connects a four inch socket to a two inch plug using a cam and groove design. It is built from aluminium with a nitrile gasket for fluid handling in industrial and agricultural settings. The fitting suits operators who need a quick, tool free connection between dissimilar hose or pipe sizes.

100 psi Working Pressure at 70 F

The coupler/adapter is rated for a maximum working pressure of 100 psi at 70 F, providing headroom for typical water, chemical and petroleum transfer duties. Pressure capacity drops as temperature rises above the reference point so high temperature service will reduce the safe operating envelope. The nitrile gasket seals effectively within standard temperature ranges but is not suited for extreme heat or aggressive solvents.

Cam and Groove Socket x Plug Configuration

The Type DA body uses a female socket on the four inch side and a male plug on the two inch side with an included locking arm to prevent accidental uncoupling. Overall length measures six and eleven thirty secondths inches while the plug length is one and seven eighths inches. The aluminium construction keeps weight low but the fitting is not intended for applications requiring stainless steel corrosion resistance.

How it compares

Measured against everything we stock in Hose Fittings, Adapters & Clamps, at today’s prices. Recalculated every night.

Price $71.99
Pricier than about 87% of the 2,955 comparable items (median $17.99).

Specifications

Product
Brand nameDIXON VALVE & COUPLING

Questions about this item

Will the 4 in socket on this DA coupler fit the 4 in cam-and-groove hose end I already use?

Yes — the socket inside diameter is 4 in, matching standard 4 in cam-and-groove hose ends, so your existing hose end will seat correctly.

How can I confirm the 100 psi rating is holding after I install the 4020-DA-AL?

Pressurise the line to working pressure at 70 F and check for leaks at the gasket and locking arm; a steady 100 psi reading with no weeping shows the coupler is sealing as intended.

Does the 4020-DA-AL come with the nitrile gasket and locking arm, or must I buy them separately?

The coupler includes both the nitrile gasket and the locking arm; no extra parts are required for assembly.

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