Knowledge of industrial valves

What is an industrial valve?

Industrial valve is a device that controls,regulates, obstructs the flow of fluid across pieline. Industrial valve is important and is a part of many different things in many different industries.

The demands on industrial valves are rapidly increasing as the years goes by therefore more and more new players are becoming interested in venturing the production and manufacturing of this valves. Probably two of the major players in this industry are the Indians and the Chinese. Although reports surfaces of the increasing need for valves which is an essential part of the industrial production especially because new plants and industrial infrastructures being built all over the world, its increasing cost of raw materials has been a long standing problem by most valve suppliers even the major players also feels this problem. Thus, the industry still finds cost cutting measures in order to stabilize their profit level but at the same time without sacrificing their high quality of output.

Most of the industrial valves players are actually on constant research and innovation in order to produce high quality and durable valves but in a more reduced cost or expense. This is so because any changes in the quality, prices or availability of these valves affects the entire mechanically centered industry.

However since most of the countries are beginning to stand up after global economic recession, the industrial valve market is also beginning to rise up. The need for these valves all over the world as well as the increasing industry of such in India and China strengthens the potential of its marketability to the global market. As the population grows and industries begin to expands, the need for valve requirements as well as investments to such. Although the valve market are very much rich in highly developed countries such as USA, Western Europe and Japan, the increasing economic growth in Asia is a valuable potential market which most of the players are looking at.

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As we have learned, the valve industry is a quite big market which carries relatively several types, kind as well as sizes of valves that anyone would probably need. It also has several kinds of valves from your household type valves to a valve used in nuclear power plants. Therefore, this market is very ripe for any player big or small to dive into. Some reports even predicted that the demand for these values can amount into billions of dollars which makes it one of the most important industries worldwide.

The industrial valves are one of the important capital equipment used by many industries. Most of the time, mechanically centered or operated industries accounts at least 10% of their capital expenditure for its maintenance, replacement or use. This is so because a defective valve may result to breakdown or shutdown of the whole operation which cause more losses for them. Big industries such as nuclear power plants, refinery, manufacturing plants, petroleum plants, mining, construction and marine industry and so forth highly rely on the plant operation thus maintaining a good working plant that uses valve is of foremost importance.

The Basic Valves

Stop and check valves are the basic types of valves. Of course there are many different and more complicated types of valve, but stop and check valves are the foundations of these valves. Unlike other valves which depend on the flow or action of the substances it contains, a stop valve is basically a valve that could be opened or closed at will. Manually, it could be switched to prevent or promote flow of liquids, gases and other substances. A check valve, also more commonly known as a one-way valve, is a two-port valve that permits entry to one and permits exit to another.

The More Complicated Valves

Of course, one wouldn’t be able to compress and classify all types of valves into stops and checks. There are more complicated industrial valves out there and they are very much helpful in many industries.

  • Balls, plugs and butterfly valves are valves which has movable flows.  Ball valves have ball-shaped disks with holes, which when rotated would close or open the valve. Plugs are cylinders with holes and these also make use of holes moved perpendicular to the flow to close them. Butterfly valves are used to isolate or regulate flow; they are more similar to ball valves but are cheaper and lighter.
  • Gate and globe valves are also more common types of valves. Also known as a sluice valve, a gate valve would either fully close or fully open. There are no partials here, as the flow of the matter would require that you fully lift up a rectangular or circular wedge out of the way. Even at higher pressures, a gate valve would remain tightly shut. Globe valves are one of the most efficient types of valves. They are one of those valves which would always experience lesser leakages and lesser losses.

5 basic parts of industrial valves

There are different parts and types of industrial valve such as angle valves, back flow preventer assembly, balancing valves, ball valves, bellows valve, black and bleed valves, blow off valve, butterfly valves, cartridge valve, control valve, check valve, directional valves, drain valve, excess flow valve, globe valve, sanitary valve, safety valve, bin gate and injection valve among others. Valves that are usually used in house hold are called balancing valve. This valve balancing the hot and cold temperature that flows depending to what knob you wish to use. But most valves are used to have a tight shut-off control in order that the media or substance will not leak or be released when not in used especially if its hazardous chemicals which may result to health complication such as nuclear waste or substances. 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.

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.

5 steps to maintain industrial valves

There are different types of industrial valves, and these valves require different maintenance too. Checking for valves that are not working, permits leakages, or not working as it’s supposed to would be very dangerous for any system. An industrial valve is used for many different day-to-day applications and systems, and a valve should be checked for any inconsistencies to avoid risks.

Step 1: Prepare Checklist

If you want to make a thorough inspection of your systems, you need to have a thorough checklist. The best thing about having an industrial system checklist is it makes mistakes avoidable and it is a great tool for forgetful people. Since different valves regulates different substances, the checklist would vary widely too. For example, checklists for water systems are different from sanitary sewer systems.

Step 2: Close and Open

Operating all the valves would be a nice idea. If it isn’t dangerous, you should try to close and open all the valves. Water valves could be checked manually, but there are those operated by computers and machines. Take note of all the valves that cannot be opened or closed, and take note also of those which do not properly close and open. This would cause leakages and you would need to replace these valves immediately so as not to put yourself and other workers at risk. Sometimes, you would just need to grease some valves to be able to open them. Make sure that it is safe to do this before you do.

Step 3: Look Closely

Looking at the valves closely would make a good inspection. Look at how the valves bend, and see if they are properly aligned. Look for leakages in the different parts of industrial valves to see if there are some things that needs to be changed. Sometimes, you would only need to make some turns to loosen or tighten the valves, but it is safe to let professionals do this for you. If there are bents and warped stems in the valves, take note of them as they surely have an effect on how the valves work. Leakages are the first things one should avoid in a system as these could cause losses in revenue, customer satisfaction, and in some other not-so-rare cases, lives.

Step 4: Clean

Manufacturers have different specifications on the valves, but cleanliness is something that should always be observed. Apply thin coats of oil on the rods, and adjust too loose and too tight linkages.

Step 5: Examine Everything

Examine everything means examining the system for parts that already show weaknesses such as cracks, brittleness and everything that might give away leakages. Test if the alarms used in the system are all working and would go off at the slightest leakages of dangerous substances.

Maintaining industrial valves is hard work, and not to mention very dangerous. It is your job to keep yourself and others safe while exposing yourself to the dangers of being too close to the systems. Inspect systems thoroughly and make sure that it is safe for you, for your co-workers and for the customers.

How to maintain industrial valves

What do we know about industrial valves? It is a very ingenious mechanical device that is designed to either start or stop or even regulate the flow of substances such as gases, liquids, semi solid such as slurries or minerals through a pipe line or passageway. This is used in almost all industry that requires mechanical uses such as plants, infrastructures, construction, manufacturing as well as household and so forth. Most valves used in household are small in nature. It regulates the flow of either gas or water throughout the whole house. There are also valves that balances the amount of hot or cold water in your shower or tube on the other hand a bigger and stronger material are being used in those industries earlier said. The amount of substance flowing can be controlled by adjusting the controlling mechanism which can either be a plug, opening a cylinder or a wedge.

The industrial valves, on the other hand, used in plants can either be hand-operated or automatic. A standard or hand-operated valve can be harder to maintain than the automatic type valve. In standard valve, the break down can easily happen because it is being used often by the handler. The usual turning and adjusting of the knob or wedge or any controlling mechanism can be loosened up and might end up replacing it with a new one because of its impossibility of being used all over again. Most of the replacement parts for standard or manual operated valve costs lesser than the automatic parts. Therefore, replacing it with a new one can be an affordable alternative than buying a new one again. In order to have its life existence reach its maximum limits, its users must gently and precisely turn it on or off. Excessive force in regulating the valve may cause its break down.

The automatic valve maintenance on the other hand is more easier to maintain because aside from the fact that there are no human intervention in its operation, it can also easily detect whether or not there is some sort of problem even before the breakdown happens therefore its handlers can make necessary fixing to prevent the whole shutdown of the operation. This is because the computer generated controlling system can very well identify at hand the existing problem thus can be solve right away. As compared to standard valve where in the handlers needs to search and look where is the root of the problem. Therefore, it is quite important to have a good quality of products and replacements in use in order that you can eliminate or lessen the risk or maintenance problem in your daily operation.

How to choose industrial valves

Valves are part of the everyday life. They are used in many industrial, commercial and residential places to make a machine or a system work out. They are used in plumbing systems, safety devices, and many others that are used every day. A valve is anything that controls the flow of liquids, liquidized solids, gases, slurries and other by permitting them to pass through, obstructing the passages, or partially just doing so. Here are some tips on choosing an industrial valve:

Tip 1: Industrial valves come in many shapes and sizes, and choosing the best one depends on the things it would control. What would be the matter your system would regulate? Is it a gas or a liquid? Is it corrosive or not? Leaking would be minimized and large losses would be avoidable. Viscosity plays a big role on the selection of the valves you should use. If you use a valve that cannot handle viscous matter, leakages are most likely to happen. High-pressure gases would be difficult to seal. Furthermore, there are also some gases like methane and hydrogen that could ignite at the slightest exposure to other gases and liquids.

Tip 2: You should also consider the temperature of the matter that would pass through the passageways of your system. There are gases and liquids that expand or contract in varying temperatures, and the knowledge of these facts and numbers would be beneficial to one when choosing an industrial valve. Knowing how much a matter expand or contract in a lower or higher temperature is always a good thing.

Tip 3: As already said, the pressure is something to consider. It is hard to seal a gas or liquid that has high pressure. 70.0 bars would produce leakages 10 times more than systems that are operating on the same valve with 7.0 bars.

Tip 4: An excellent valve would only remain excellent for some years. Whether you don’t or you do know how to maintain industrial valves, they could only give you excellent performance some time and would then slowly retire. You might notice some minute leakages at first, but maintenance of these valves should include having someone to check every day or every week for some leakages. Dangerous systems would need checking and maintenance of the whole system more frequently, and this holds true for the checking and maintenance of an industrial valve.

Tip 5: It is also best to choose a valve that is right for you and anyone else in the industry. To do this, you should choose a valve that has been approved and certified, and meets the current standard codes. You should also check that the supplier of the valve is a pleasure to make business with, or risk having your supplies delayed and your customers angered.

The selection of industrial valves is one of the most important decisions you have to make in the process of the creation, maintenance and repair of a system. In order to have a perfectly working system, you need to have the components perfect, or the overall quality of the system would be compromised. Selecting the industrial valves may be quite overwhelming because of any variety to choose from. Just make sure that you get your valve from a trusted suppler in the industry and have complied with all the necessary requirement and quality control because lots of lives will be compromise otherwise.

Source: China Industrial Valves Manufacturer – Yaang Pipe Industry Co., Limited (www.metallicsteel.com)

(Yaang Pipe Industry is a leading manufacturer and supplier of nickel alloy and stainless steel products, including Super Duplex Stainless Steel Flanges, Stainless Steel Flanges, Stainless Steel Pipe Fittings, Stainless Steel Pipe. Yaang products are widely used in Shipbuilding, Nuclear power, Marine engineering, Petroleum, Chemical, Mining, Sewage treatment, Natural gas and Pressure vessels and other industries.)

If you want to have more information about the article or you want to share your opinion with us, contact us at sales@metallicsteel.com

Please notice that you might be interested in the other technical articles we’ve published:

  • How To Choose A Valve

  • Knowledge of a filter and a gate valve

  • What Are the Needle Valves

  • What are Thread Valves

  • What is a Butterfly Valve

  • What are Pipe Valves

  • Knowledge of globe valves

  • Knowledge of ball valves

  • Knowledge of Gate valves

  • Knowledge of check valves

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