What is a PN16 valve?

PN is an acronym for “Pressure Nominale”. The PN is used as a prefix to the pressure rating of the Flanges. For example, the flange PN16 is designed to operate at up to 16 levels. Normal scores: PN6, PN10, PN16, PN25, PN40, PN64, PN100.

What is a Globe type valve?

A globe valve is one of the most common types of control valve. Globe valves have sphere-shaped bodies. Inside the valve, a baffle separates two halves. This internal structure creates a different flow path than ball valves and other rotary-type valves. Globe valves actuate in a linear movement.

Are globe valves and plug valves the same?

The main difference between ball and globe valves is the way they close. Ball valves have a stem and ball, which turns horizontally, and are commonly referred to as “rotational” valves. Whereas, globe valves have a stem and plug, which strokes linearly, and gives them their other name of “stroke” valves.

How many types of globe valves are available?

three
There are three basic globe valve body designs: Tee, Angle, and Wye.

Are globe valves expensive?

Globe valves generally seal better than gate valves and last longer. They are more expensive than similarly sized gate valves, but may be worth the extra expense in situations where throttling is needed.

Why is it called globe valve?

The globe valve gets its name from the globular shape of the valve body. Other types of valves may also have globular bodies. Thus, it is the internal structure of the valve that defines the type of valve.

Why are globe valves used?

A globe valve regulates flow in a pipeline. It is used to control or stop the flow of liquid or gas through a pipe. Globe valves are named for their spherical body shape with the two halves of the body being separated by an internal baffle.

Is a globe valve better than a ball valve?

Ball Valves vs Globe Valves A globe valve uses a plug (stem) that closes against the flow, and a ball valve has a gate (ball) that closes across the flow. Globe valves are good for regulating flow, whereas ball valves are better for on/off control without pressure drop.

When would you use a globe valve?

Globe valves are used primarily in situations where throttling of the commodity is required. By simply rotating the handwheel, the rate at which the commodity flows through the valve can be adjusted to any desired level. Having the valve seat parallel to the line of flow is an important feature of the globe valve.