May. 06, 2024
Mechanical Parts & Fabrication Services
Not all valves are built the same and there’s good reason for that. Knowing a few basic facts about the different materials will ultimately have long-term effects on your application’s capabilities. Cast iron, ductile iron, bronze and stainless steel are all similar metals but what stands each of these apart? We’ll assist you in choosing the best metal solution for your everyday valve application needs.
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Cast iron — a metal made from mostly iron with small amounts of carbon and silicone — is known for its tolerance to extreme temperatures. It can handle temperatures over 2,100 degrees Fahrenheit. It is a very strong metal and can usually go undamaged through situations of intense vibration; however, cast iron is extremely rigid and has a low resistance to bending. Almost any bending will cause the material to fracture or break completely. A big advantage to cast iron is the cost. It is a relatively inexpensive metal and a very economical and useful option for most situations.
Ductile iron, as its very name suggests, is more flexible than cast iron. It is an iron alloy made with nodule-shaped graphite crating a metal that has a little more room to bend without breaking or cracking. With the ability to flex, however, comes a lower overall temperature tolerance than cast iron and a slightly higher cost.
Valves built from ductile iron have excellent corrosion resistance and superb strength, making it a great choice for applications in which a tougher material is needed and in conditions where weathering is likely. Here at Flomatic all of our ductile iron valves are epoxy coated to protect the valves from long term erosion and corrosion in many different fields of application.
The use of bronze in plumbing systems dates back to the Roman Empire. Made primarily from copper and tin, this metal is both strong and malleable. It does not crack as easily as iron as it has high ductility. Bronze is also known for its high resistance to corrosion even against harsher fluids and those similar to seawater. However, the nature of the alloy causes it to have a somewhat rough and porous surface which can leave the material susceptible to pitting and degradation over time if not properly maintained.
It is important to note that consumers should seek out valves with the lowest lead content. Make sure if you’re picking out a bronze valve for potable water, you’re choosing a valve that is ANSI/NSF 372 & ANSI/NSF 61 certified. These certifications mean it meets the minimum lead requirements for safe and healthy drinking water.
Stainless steel has become a very popular valve material for many reasons. Valves made from this metal have exceptionally high oxidation and corrosion resistance and extreme durability, making a product that lasts a long time. Stainless steel valves do not rust, even if placed in areas of high moisture or directly in water. This property makes them a great choice for coastal regions where saltwater corrosion may be a concern.
The smooth metal is easily cleaned, and a popular choice for food and beverage applications. Stainless steel has good heat resistance; however, it is not ideal for extreme high-temperature applications. A potential downside of stainless-steel valves is that they’re very expensive. However, with price, comes high-quality.
Using the information provided above, think about your scenario and the conditions in which the valve will be used. Will it be outdoors? In severe temperature? Will this metal be susceptible to movement and vibration? Once you determine the extremes, you’re easily able to choose the appropriate metal for your application.
And of course, never be afraid to ask the experts. With over 85 years of industrial experience in the valve market, Flomatic knows valves inside and out and we are happy to guide you to the right product for the right application.
A check valve is a widely used valve in different sectors and installments ranging from domestic usage to industrial usage. In this article, we are putting a light on detailed information about the usage, advantages, and mechanism of different types of industrial check valves. First of all, let's have an introduction to check valves.
What Is A Check Valve?
A check valve is an automatic shut-off valve, designed to allow the flow of fluids and gases in a single direction.
The check valves operate under pressure and flow; the closure mechanism opens allowing the gases or fluids to flow freely.
Fluids or gas enter the valve at the inlet and exit through the outlet. Until the pressure drops, or the pump is shut down the flow continues without any interruption.
It is one of the few self-automated valves that don’t require assistance to open and close, unlike other valves. If the plant facility loses air, electricity, or labor assistance it won't affect the work continuity of the valve.
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PVC check valves are widely used by various industries. Check valves are ideal for water pumps.
Mechanism Of Check Valve
The industrial check valve gets activated by the flowing material. The check valve will get opened automatically by the pressure of the material passing in the right direction and if the flow gets reversed, then the valve closes automatically.
While getting opened the internal disc in the valve allows the flow to pass forward. The disc begins closing the valve as forward flow gets decreased or is reversed.
Parts Of Check Valve
Types Of Check Valve
Application Of Check Valve
The application and usage of check valves range from domestic to industrial purposes. Check valves can be used in the following sectors and systems,
Advantages Of Using Check Valves
It doesn’t matter what type of check valve is getting installed. The answers to your question about why do we need a check valve to get installed are below,
Materials Used For Different Types Of Check Valve
Different types of check valves are required for different setups and usage. Following that, whether it is PVC Check Valve, Dual Plate Check Valve, Swing Check Valve, Wafer Type Check Valve, Ball Check Valve, or Lift Check Valve all these industrial check valves are available in different dimensions and materials. The price of check valves is quoted as per the materials used and the dimensions of a check valve.
The check valves are manufactured using PVC, stainless steel, cast iron, cast steel, bronze, and brass. The Industrial check valve price varies depending upon the types of valve, metal, and dimension.
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