A ball valve is operated by a quarter turn. A ball valve consists of a spherical plug with a through hole called a closure membrane. We are the various types of industrial valve manufacturer.
When the valve is open, the through hole is in line with the flow of fluid, allowing it to pass through. By rotating the globe 90 degrees, the valve can be closed. As a result, the hole becomes perpendicular to the flow and stops it.
Sheets are usually made of soft materials to ensure a tight seal. The sheets can be made of plastic or metal. These valves should not be used in partial openings.
Flow direction and plug opening are misaligned in open valve conditions, resulting in a large pressure drop.
Aira Euro Automation is the leading valve manufacturer in India. We offer various types of industrial valves like ball valves, butterfly valves, control valves, pressure reducing valves, Plug valves, and many more.
Types of Valves
Gate valve
Gate valves are sliding types of boiler valves. Metal gates are used as closure membranes in gate valves.
The gates slide down to close the valve. As the flow area is equal to the pipe area in fully open conditions, the pressure drop across the valve is negligible.
Plug valve
Usually, these valves are used in an on/off configuration. Because these valves can work with metal-metal sealing, they are used in the petrochemical industry in partially open conditions due to vibrations.
These valves are quarter-turn valves, just like ball valves.
In the open position, these boiler valves consist of a plug that can either be cylindrical or conical. The plug also has a through slit that remains in line with the flow.
This slit becomes perpendicular to flow when the plug is rotated by 90 degrees.
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Butterfly valve
Steam boiler valves like these are the simplest and most versatile. Also, these are quarter-turn valves. Quarter turn operation ensures quick valve operation. When the valves are open, fluid flows through them freely. As a result, there is very little pressure drop across the valve.
In addition to its unique mode of operation, the valve can be easily actuated without requiring wear and tear. Its compact size makes it easy to install.
Globe valve
Globe valves are linear motion valves and are typically used for both on/off conditions. In globe valves, fluid flows follow an S-path.
Due to this, the flow direction changes twice, resulting in higher pressure drops. Because of other advantages they offer, they are widely used in applications where pressure drop through the valve is not a determining factor.
Depending on the application, these valves can be configured in three ways:
- Pattern of Tees
- Pattern of angles
- Pattern of Wye
Disc check valves
Non-return valves allow the flow to pass through them only in one direction and stop it in another. As a result of this unique property, check valves are used in some critical steam system applications.
Lift Check Valve
The discs are lifted from the seat by the force of incoming fluid when it comes forward against gravity. As a result, fluid can flow in this direction through the valve. The disc remains on the seat when the fluid comes in the opposite direction, supporting the force of gravity.
Swing Check Valve
The disc or closing element of this type of check valve swings around a hinge point. Fluid passes through the disc when it swings in an open position in the forward direction. A disc swings and rests on the seat when the fluid flow goes in the opposite direction.
The four major types of disc check valves are as follows:
Spring loaded Check Valves
In this type of check valve, the spring provides a tight shut-off. The disc on the seat is held back by the spring. Even in the forward flow condition, the fluid must exert some force, called cracking pressure, to open the disc.
Diaphragm Type Check Valve
Check valves of this type use diaphragms arranged in a way that allows only forward flow. The diaphragms remain closed when the flow is reversed.
