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Manufactured for a variety of hydraulic applications, a right coupling ensures a fast and efficient connection and disconnection of liquid supply lines. As it is used for a variety of heavy industrial applications, including chemicals, oil refineries, steel mills, etc., it is critical to select to invest in the right coupling. Read on to discover the major factors to consider when buying the right coupling:

Flow

The system flow rate is one of the most significant factors to inspect. System designers should aim to minimize pressure drop to avoid system inefficiency when considering coupling size and internal valving.

Pressure

Pressure has an impact on all the components of quick coupling, hence improper pressure application can lead to disastrous results.

Air inclusion and spillage

Air inclusion is the small amount of air infiltration into a system when a coupling is connected. This only applies to couplings that close at the interface, before the valves are open. Spillage should not be confused with leakage as it refers to a small amount of fluid that is lost with the disconnection of a coupling is disconnected.

Environment

Couplings are affected by environmental factors as well as the conditions in which they are used. Outdoor couplings should be weather resistant. If a coupling will be subject to an unclean environment, it is best to select one with no moving parts as they are not affected by dirt, as much as couplers with movable sleeves. Moreover, use dust plugs in disconnect conditions to avoid contamination of dust.

Location

The location of coupling is another factor that determines its selection. For example, a zero pressure type is suitable for a coupling situated on a pipe. This is because only one hand is required to operate it. Most styles would work for a coupling located at the end of a loose hose.

Frequency of use

Depending on how frequently you will use the quick-connect coupling, select one for yourself. Heavy-duty use, for example, requires couplings without spring-loaded, poppet-type valves and with O-ring seals instead of flat washers.

Sizing

A right coupling is sized according to its connection size (determined by the hose or pipe fitting to which the coupling is connected) and body size (determined by the required airflow).The flow rate is not critical when a coupling is used with a dusting device.

Selecting the right coupling could not have been easier! Just follow the above-mentioned tips and you will end up with the highest quality coupling that will last for years.

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