How do you size a steam control valve?

Proportional control valves should be sized using a pressure drop through the valve of 80% gauge inlet pressure (PSIG) for low pressure steam systems. (Low pressure is generally defined as systems carrying 15 PSIG of less.) For steam pressures over 15#, recommended pressure drop is 50% of inlet gauge pressure.

Can globe valves be used for steam?

Globe valves are used mainly for steam or other media where a throttling service is required. The seat design gives an advantage for doing this by utilising its globe shape as it comes down to connect with the seat effectively cutting the flow gradually up until it seals completely on the seat face.

Why use globe valve steam line?

Typically, globe valves are used for regulating flow in pipelines. Instead of having the “all or nothing” approach of a gate valve, globe valves regulate by the position of a movable disk (or plug) in relation to the stationary ring seat. The most typical operation for a globe valve is throttling flow control.

Which is better globe or gate valve?

They offer more resistance to fluid flow, and have a high-pressure drop even when the valve is fully open. 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.

How long do globe valves last?

Sometimes, ball valves quit functioning because they are well past their life expectancy of eight to ten years. Sometimes ball valves give out due to corrosion that occurs in or around the ball valve. Ball valves can shut off a fixture to help control the flow of liquids or gases.

What size valve do I need?

According to this rule of thumb, low-profile rims that measure around 25mm require a 40mm valve stem. For those wheelsets measuring 35-45mm, a 60mm valve stem will normally be long enough, while anything taller than 50mm demands an 80mm valve stem.