Quick disconnect fittings, also referred to as quick release couplings or quick connects, are designed to enable quick and simple connecting and disconnecting of fluid lines. These manually operated fittings replace fittings that would need to be assembled or disassembled with tools.
You can find quick disconnect valves and fittings in a wide range of industries, and in many different categories. Ultimately, these quick disconnect features make for a much simpler experience for the user, as it becomes easier to connect and disconnect fittings. They also help prevent fluid leakage, because it’s easier for users to connect them correctly.
Design considerations
Before choosing a quick disconnect fitting, it’s important to consider various design elements.
For starters, you will need a fitting that is capable of delivering the level of flow you need. The fitting should also be able to handle the maximum pressures that will be present in the application. Materials used for the design of the disconnect must be compatible with the fluid it will be working with, and with the temperatures in which it is most likely to be used.
Some fittings might need to be operated with only one hand, which is another important design consideration. Other fittings might require shutoff mechanisms in either end of the connector.
It’s a good idea to consult with an expert on the design you need for your fittings before making your purchase.
Examples of quick disconnect fittings
There are several types of quick disconnect valves and fittings you should be familiar with:
- Snap fittings: Snap type fittings with ball latching mechanisms are the most common style of quick disconnect fitting. They feature a spring-loaded ball latching mechanism that automatically locks each half of the fitting together. When the system pulls back the releasing sleeve, both the internal and external ends disengage from each other quickly. This makes it easy to use multiple connections throughout the product’s life cycle, and for the fittings to be disconnected with just one hand.
- Non–latching fittings: If you need the capability of performing fast service in a relatively tight area, non-latching quick disconnects may be the best option. If a part of the device needs to be changed out frequently or if you want to integrate the fitting into your own unique mounting plate, these are also circumstances in which you will select this type of fitting. These fittings typically have self-sealing valves, meaning they will contain the fluid in one or more lines upon being disconnected.
- No shutoff: These quick disconnect fittings are frequently used when you need high flow rates. They will most frequently be used in applications featuring non-hazardous gases or low-pressure air.
- Shutoff fittings: You can find both single and double shutoff fittings. In a single shutoff fitting, the internal half of the assembly will have a valve that prevents the flow from continuing. In a double shutoff fitting, both the internal and external ends will have those shutoff valves.
So, what are quick disconnects, and what is the best kind for your application? Contact Hydraulic Power Sales, Inc. today to learn more.