Needle valves are used to accurately control flow rate. They are also suitable as reliable shut off valves. Common sizes are from 1/8” up to 2”. Adjustments are gradual and smooth. A disadvantage of needle valves is the relatively large pressure drop. Function of needle valves Needle valves have a long-threaded plunger with a needle-shaped …
Check valves are devices that only allow media to flow in one direction. Due to this, they are often called “one-way” or “non-return” valves. They are two-port valves, which mean they have one inlet and one outlet. They do not require a user or actuator to function, as they work automatically based on the pressure …
Check Valves – function, types and selection criteria Read More »
A ball valve is a quarter turn valve that can control the flow of a gas or liquid through a hollow pivoting ball, as seen in Figure 1. They are often chosen for their reliability, durability, good sealing, wide range of media options, and long service life even when used infrequently. This article will discuss …
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