Two Questions To Ask When Deciding Whether To Buy Quick-Connect Couplers

A quick-connect coupler lets you rapidly attach and detach a layflat hose to and from various applications, which can save a lot of time and increase productivity. However, this type of coupling may not be appropriate for all uses. Here are a couple of questions to ask to ensure it will work for what you need it for.

What Are the Application's Pressure Requirements?

Quick-connect couplers offer a number of benefits over regular ones, but one drawback to using them is they can cause a drop in pressure. This is because these couplers have internal valves and mechanisms that can impede flow, not to a great degree but enough to make the fluid, gas, or air move through the hose a bit slower than if you were to use regular couplers.

How much the pressure drops when using a quick-connect coupler varies between models and manufacturers, so you'll have to review the products' specs to determine the couplings' pressure rating and expected drop. You'll then need to also figure out what the maximum pressure drop your application can sustain and still function properly and then choose the coupling that best fits your needs.

It's worth noting that sometimes you can mitigate pressure slowdowns caused by purchasing a quick-connect coupler that's slightly bigger than required. However, it's best to speak with a knowledgeable sales representative before doing so to ensure there won't be any other unwanted side effects that develop from using a larger-than-necessary coupler.

Single or Double Shutoff Couplings?

There are two types of quick-connect couplers: single shut off and double shut off. Single shut off couplers have a valve on the coupler side that automatically closes whenever the nipple half is removed. With double shut off couplers, the valve is on both the coupler and the nipple and they close at the same time when they are separated.

Both types of couplers improve safety by stopping liquids from spilling out unchecked. However, double couplers prevent leaks a lot better than single couplers and they stop air, water, and dirt from getting trapped between the coupler and the nipple, which can cause problems when the liquid starts flowing again. At the same time, though, single shut off couplers tend to be cheaper because less material is required to make them.

What you're using your hose for will determine the best type of coupler to use. Single shut off couplers work just fine for applications requiring compressed air or gas. It may be better to use double shut off couplers, though, for applications involving fluids.

For more tips on buying layflat hose couplings, contact a local retailer.



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