How To Select Fluid Connectors And Bottlenecks

 Choosing the correct fluid connectors will enhance patient safety and increased user convenience while maximising flow and sealing capability. With so many different hazards and choices for connecting pipes in different medical applications, it's important to have a repeatable and easy-to-use process for choosing the correct connector. Hydraulic accumulators, fluid connectors, and pneumatic fluid connectors are all available in the market, but with so many different features, it can be confusing as to which one is the correct choice for a particular application. In addition, fluid moves at extremely high velocities, and the wrong connector can mean the difference between life and death in some cases. It's important that fluid is connected to its correct hydraulic accumulator tank, as incorrect connections may lead to severe consequences. This article aims to help healthcare professionals understand that fluid connectors are appropriate for their applications and how these connectors should be selected.



Once the correct fittings have been identified, it's time to evaluate the liquids flowing through the system. Each fluid may require a different couplings and fittings and should also be matched to the proper hydraulic accumulator tank size. Additionally, a liquid cooling system may require a different couplings than a pneumatic or hydraulic accumulator. If the liquid cooling system is very specific in its requirements, you may need an entire hydraulic accumulator or unit.

After the proper couplings and fittings have been selected, the next step in the design process is to determine the proper o-ring or ring material. Many medical equipment manufacturers offer a wide selection of o-rings and ring materials including NPT, NPH, PTFE, and rubber stoppers. A medical facility may choose to use NPT or NPH couplings and fittings due to their chemical resistance, which increases durability and performance over time. PTFE and rubber stoppers provide additional flexibility, but should be avoided in situations where flexibility is not a significant concern.

When selecting a variety of appropriate couplings and fittings, you will also want to consider the mechanical properties of the selected products. In general stainless steel and nickel chrome are considered to be the most durable, although some metal and plastic materials offer increased strength and wear resistance. In addition, the physical design and compatibility of components should be considered. Hydraulic couplings and fittings should be compatible with the equipment they are intended to serve, as well as the specific type of valve or tubing that each piece is to attach to. Ensuring the proper couplings and fittings ensures that all parts will work together as intended and prevent potential problems that could potentially affect the functionality and efficiency of the system.

The first step in choosing a fluid connector is identifying your specific application and then identifying the fluids that need to be connected. Connectors can be chosen for general purpose fittings, low velocity fittings, liquid cooling systems, hydraulic accumulators, and more. Understanding the exact application of each fluid connector is very important and requires a qualified professional to determine the correct fittings based on the application.

The last step in the design process is to ensure that the fittings, rings, and o-rings sit securely in place and that they will be able to handle the specific stresses placed on them during use. Many fittings and rings are offered with different profiles and varying number of barbs. Barbs are the external rings on the inner face of the tubing. Typically there are two barbs, one bar and two parting lines, which are designed to prevent hydraulic pressure from building between the tubing and the seal. Commonly, there are four barbs, although five may sometimes be used.

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