5 Basic Parts Of Industrial Valves

Having knowledge on the parts of the industrial valves as well as the kind of its that you would use would make the system function better and more accurately.

There are many different kinds of industrial valves, but the basic parts are more or less the same. The parts that make up the valves are important as they define how the valve would work and ultimately how the whole of your system works. Valves are used in many different appliances, systems and common items inside the house, and knowing how they work would require knowing what they are made of.

1. Body

The body of the valve is the outer casing. They house the internal parts of the trim and they are made of different materials such as plastics and metals. Bronze, iron, stainless and alloy steels could be used to control materials that are harder to handle than water. Some other valves need to be able to stand corrosion as liquids, gases and liquidized solids would be made to pass through them. Alloy 20 are commonly used for sulfuric acid; monels are used for hydrofluoric acids; hastelloys are used for nuclear plants, and inconels are used for hydrogens.

2. Bonnet

The bonnet is screwed or bolted into the body, and it acts as the body’s cover. It is made to hold the insides of the valve in place. If you want to tinker on the insides of the valve, you need to take the bonnet off. Some valves like ball valves do not have these bonnets, as they are screwed together differently.

3. Handle

The handle is one of the first things that you would see when you see a valve. Some valves need to be controlled with handles, while some others don’t even have these. Some valves like relief valves and check valves don’t have a handles because these valves control the flow of substances from the inside. These are also known as automatically controlled industrial valves.

4. Disc

The disc is a part of the valve that also depends on the type of the valve. In a butterfly valve, the disc moves in line with the valve or rotate on the valve’s stem. In a check valve, it rotates on a trunnion or hinge. In ball valves, fluid passage is possible with cylinder holes and spherical rotors. Plug valves make use of ‘plugs’, which are cones or cylinder rotors.

industrial valves parts

5. Stem

When there is a bonnet, the stem passes through it. The stem of the valve is the one that transmits the motion of the handle to the disc of the valve. It could be screwed to the valve to move the disc in different directions inside the body of the valve. Normally-seated valves, also called front-seated valves, have discs that need to be rotated in the direction of the valve to close; reverse-seated valves do it the other way.

There are many industrial valves review over the web. It is always good to choose the one that would work best on your system. Having knowledge on the parts of the valve as well as the kind of valve that you would use would make the system function better and more accurately.