Couplings

With Blue Dog couplings, or connectors, you can ensure that the pressure flow is strong and stable throughout your abrasive blasting project. Coupling actually means the pairing of two items. So if you have improperly paired items, there are signs to look for. If the blasting stream is weak, you may have a poor connection from blast pot to hose, or from one hose to another. Also check for any physical evidence of your connections springing a leak. With blasting equipment, a leak of any kind, leads to less efficiency on projects and very quick wear of the parts leaking. Whether your pressure is lower than normal or you can see leakage from one of your connections, consider finding a new properly fitted coupling to increase the power of your blasting stream.

Here are a few types of couplings you’ll find on our site.  They are usually named based on where they are affixed to your blasting equipment.

Nozzle Couplings

Nozzle couplings are attached to the end of the blast hose to ensure a secure connection of the hose to the nozzle. These couplings are female threaded to accept the male threaded end of a sandblast nozzle for a seamless fit.  These couplings will be sized for each different size hose and also come in either 1-1/4″ or 3/4″ in size and 1-1/4″ standard thread or 2″ (50 mm) contractor thread.  We also have a variety of materials like aluminum, and nylon.  It’s suggested to choose a coupling of a different material than the threads of a blast nozzle to avoid them becoming stuck together while blasting.  ie, choose a nylon nozzle coupling to pair with your aluminum thread nozzle.  

Hose Couplings

A hose coupling connects one hose to another hose, blast hose to blast pot, or blast hose to threaded nozzle quick coupling.  Blue Dog offers standard sizes for hoses based on the scope of your blasting needs, and the couplings come to match each hose option.  These couplings are also offered in several different materials.  Choose what you trust.

Threaded Tank Couplings

These are attached exclusively to the blast pot. This coupling must be exceptionally strong because it guides the initial exit of blasting medium from pot to hose.  Blue Dog Blasting couplings come in various materials like aluminum and steel to accommodate this.  Make sure you match up the correct size for your pots requirements.  For example, a small pot might have 1/2″ threads while a larger pot will need 1-1/4″ threads.  Both the pot and the coupling should be standard NPT (National Pipe Thread) so you can use regular reducer nipples if need be but we do offer several sizes to fit your needs.

Threaded Nozzle Quick Couplings

Used when different jobs call for different lengths of hose or different size nozzles. These couplings speed up the process of either adding in a length of hose or swapping out a nozzle.

If you need to add hose – Usually your hose will have a hose coupling on one end and a nozzle coupling on the other.  If you need to add a hose section (say to go from 50ft of blast hose to 100 feet) you would have to use a hose with two hose couplings to go from the pot to the hose you were using that has the nozzle coupling.  OR you could use a quick coupling with a nozzle threaded into it.  Now you would keep all of your hoses, any variation of size or length, with all hose couplings and no nozzle couplings.  Now you can add hose, switch out hose, or add a whip hose and simply couple in your nozzle with the quick coupling.

If you switch out nozzles – Get a threaded nozzle quick coupling and attach it to each of your nozzles.  If you use a nozzle that has the same threaded material as the nozzle coupling (ie. aluminum threads with an aluminum coupling) they can become stuck together during the blasting process.  Hose couplings and threaded nozzle quick couplings won’t do this, so you don’t have the risk of not being able to unscrew your nozzle and swap it with a different one.  You can also easily attach any of your nozzles to any of your hoses because the quick coupling pairs with the hose coupling.  It’s as easy as a push and a turn and you have a new nozzle on your hose.  No need to unscrew a nozzle coupling and add it to another hose.

Get back to blasting with the durability and reliability of Blue Dog Blasting equipment, shop couplings here.