Sandblast Hose Coupling - Aluminum 2-Lug Crowfoot Hose End for 3/4, 1 and 1-1/4 in Blast Hose

Aluminum sleeve-type sandblast hose couplings with the industry-standard two-lug crowfoot end. These are the hose-end couplings, used to join one length of blast hose to another or to connect a blast hose to the threaded pot end on a blast machine.

The coupling slips over the outside diameter of the hose and is fixed with wood screws through countersunk holes, so the screw heads sit flush and will not snag as the hose is dragged. An internal corkscrew ridge inside the sleeve helps twist the coupling onto the hose and resists blow-back under pressure. Because they fit over the hose OD, blast couplings are sized by hose OD as well as ID, which is why the table below lists both.

Sizes

• Q1A: for 3/4 in ID blast hose, 1-1/2 in OD
• Q2A: for 1 in ID blast hose, 1-7/8 in OD
• Q3A: for 1-1/4 in ID blast hose, 2-5/32 in OD

Why the two-lug end matters

The two-lug crowfoot is the common blast-coupling pattern, and the lug ends interchange for common connections regardless of hose size. That means a Q2A on a 1 in hose will mate to a Q1A on a 3/4 in hose, or to a pot-end coupling of either size, so you can step hose sizes down a run without adapters. Keep a few spares in different sizes and almost any combination of hose on the truck will go together.

Key specifications

• Material: aluminum
• Type: sleeve-type hose end, secured with wood screws
• Connection: two-lug crowfoot, Chicago pattern
• Use: hose to hose, or hose to blast pot
• Gasket: a gasket seals the lug connection. Replacement gaskets are a single universal size, so one spare covers every coupling in this range

Fitting and safety

Cut the hose square, work the coupling on against the internal ridge until the hose butts up inside the sleeve, then drive the screws through the countersunk holes into the hose wall. Always fit a safety cable or whip check across every lug connection in a blast line and depressurise the pot before breaking a coupling. A blast hose that parts under pressure is dangerous, and the lugs are a mechanical connection, not a locking one.

Related parts

Pair these with the matching aluminum nozzle holder at the business end of the hose and the threaded pot coupling at the blast machine, and keep the hose itself in the same size. Brass versions of this coupling pattern exist where a non-sparking fitting is required. Ask us if that is what the job calls for.

Aluminum two-lug crowfoot sandblast hose couplings in Q1A, Q2A and Q3A for 3/4 in, 1 in and 1-1/4 in blast hose, sleeve fitted and screw fixed, interchangeable across sizes. Tell the Warthog Air Compressor Store team your hose OD and we will make sure you get the right one.