Valve Selection Guide: Things You Must Know

Author: Marina

Aug. 12, 2024

Valve Selection Guide: Things You Must Know

Selecting the right valve for any given industrial operation is no small task. Valves are critical components in a wide range of applications, from power plants to water systems and more. The right valve must be selected to ensure optimal performance and safety. That&#;s why it&#;s important to understand the fundamentals of valve selection before making a decision.

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In this valve selection guide, consumers will discover the basic considerations of valve selection and learn how to identify the ideal valve for different applications. From valve types to construction material and operational requirements, this guide offers the essential information that every consumer needs in order to confidently make the best choice.

Select the Valve Type

Depending on the service medium and application requirements, some specific valve selection chart needs to be evaluated when selecting a valve including flow direction, temperature and pressure requirements, type of actuator, and leak tightness. 

Selecting the right valve type is essential for a successful piping system. Valve types can be classified according to the media they regulate, such as liquid and gas, and by their internal construction, such as globe and gate valves. 

Industrial Ball Valve

Industrial ball valve offers a shut-off point for the flow of liquids or gasses. The ball valve is designed to remain shut off until its lever is manually turned to open it. This allows for easy control over the flow of fluid or gas through a pipeline. It also offers extremely tight sealing capabilities and is not prone to leakage due to its quarter-turn operation mechanism.

Needle Valve

This particular valve is commonly employed to manage the flow of liquids, gases, and other substances. Its composition comprises a threaded needle with a gradually narrowing tip, typically crafted from brass or stainless steel. The valve operates through a gradual adjustment of the aperture at the needle&#;s base as the user rotates the stem of the valve.

Globe Valve

This consists of a spherical body, which contains an internal seat surrounded by a disc-shaped plug. The valve can be opened or closed by turning the plug against the seat, which regulates the amount of flow through the valve. Globe valves are widely used in industrial applications because they can handle high pressures, temperatures, and viscosities, and they are leak-proof when properly installed.

Plug Valve

This particular kind of quarter-turn rotary valve utilizes a cylindrical or tapered plug to control the flow of liquids or gasses. The plug generally has one or more groove openings or passages, which can be aligned with an inlet and outlet port on either side of the valve body, allowing media to pass through the valve.

Diaphragm Valve

This valve variant leverages a pliant diaphragm to manage the flow of liquids or gases. The diaphragm is fashioned as a circular disk with a central aperture and links to a stem that connects to the valve body. When put into use, the pressure from the liquid or gas under control keeps the diaphragm sealed against the valve seat, ensuring precise regulation of the flow.

Butterfly Valve

A butterfly valve is a kind of quarter-turn valve that uses a disk with a rotating shaft to control the flow of a fluid. They are commonly used in industrial applications and are available from various butterfly valves supplier worldwide. The disk is positioned in the middle of the pipe or other passage and rotates so that when it is perpendicular to the flow, fluid is able to pass, and when it is aligned with the flow, fluid can not pass.

Butterfly valves are used extensively in industrial applications such as controlling the flow of liquids, gasses, and vapors. They also find extensive use in water treatment plants and wastewater systems, due to their excellent capabilities in regulating and throttling fluid flows.

Check Valve

A check valve is a kind of valve that allow fluids to flow in only one direction. It has applications in both residential and industrial settings. Check valves help prevent backflow, which happens when pressure forces fluid to move backward rather than forward. 

Relief Valve

A relief valve is a safety device used to protect a plumbing system from damage due to excessive pressure buildup. It allows controlled release of pressure when a predetermined level is exceeded, thus protecting the system and its components from damage caused by too much pressure.

Solenoid Valve

A solenoid valve is an electrically powered valve used to control the flow of liquids, gasses, or other fluids. It consists of a cylindrical coil of wire containing a ferromagnetic core surrounded by an outer shell of non-magnetic material. When electricity is passed through the coil, a magnetic field is created which causes the core to move and open or close the valve. The core is secured to a plunger that also moves and connects with the valve opening/closing mechanism.

Gate Valve

It is a linear motion valve, which works by removing a round or rectangular gate/wedge from the fluid&#;s path. In most cases, the gate is linked to an actuator, which opens or closes the valve in accordance with a signal from the controlling system. Gate valves are most commonly used for isolation purposes, as opposed to control purposes. 

Selecting Valve Seat Material

When selecting valve seat material, there are several important considerations. The material must be able to withstand high temperatures and pressures. It should also be able to maintain a good seal between the valve and seat. Here are some considerations on selecting valve seat materials.

Pressure

When choosing a valve, valve seat material pressure should be considered. It affects the performance of the valve and can ultimately determine its longevity. The valve seat material should be chosen based on the specific application, the pressure range of the system, and the working environment.

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Temperature

The temperature range and pressure range of the system should also be taken into account when selecting a valve seat material. The material should be able to withstand both low and high-pressure ranges without becoming damaged or deformed. Different materials have different properties, such as thermal conductivity, so it&#;s important to select a material that can handle the environment in which it will be operating in.

Size Range

The size range of these materials is an important consideration in their selection. Generally, many valves factory across the world have their valve seat material be able to accommodate a significant range of sizes, from very small to large.

For smaller valve sizes, bronze and stainless steel are usually well-suited. For larger valve sizes, cast iron or hardened steel are often used. They provide maximum sealing strength, excellent rigidity, and long service life for heavier-duty applications. 

Corrosion Resistance

One of the key factors in selecting a suitable material for a valve seat is its corrosion resistance. Corrosion can significantly reduce the efficacy of the valve and cause extensive damage, so selecting a material that offers excellent corrosion resistance is essential. 

 Ability to Seal

The sealing performance of a valve seat relies on two primary factors: its type of seal and its ability to form a strong bond between the seat and the valve body. The amount of force applied to the seal and the amount of contact area between the seat and the valve body will determine the type of seal needed for a particular application.

Wear & Tear Resistance

Wear and tear resistance is an important factor to consider, most of the industrial valve company already offer this factor to their valve products. Valve seats are subject to extreme temperatures and high pressures, which can cause them to wear out quickly. To guarantee optimal performance and longevity, it is essential to select a material that is durable and abrasion resistant.

Cost-Effectiveness

Cost-effectiveness when selecting valve seat material is crucial to select the most appropriate material for the application so that the desired performance can be achieved, while also considering its cost. Cost considerations will include not only the initial purchase price of the valve seat material, but also its lifetime costs such as installation, maintenance and energy consumption.

Conclusion

Valve selection is an important task for any industrial operation. By having an in control valve selection guide and making an informed decision, consumers can ensure that their chosen valve meets their specific requirements and provides optimal performance.

Dombor is an industrial valves supplier that specializes in providing tailored solutions for a variety of industries. With our wide range of products and experienced team, we have become a leading name in the industry. Our company provides a comprehensive selection of industrial valves ranging from basic butterfly valves to ball valves.

Our products are designed to meet the highest standards and are certified by global third-party certifiers. Furthermore, we offer customized valve solutions for specific requirements, allowing customers to get the exact product they need. Contact us today for any valve solution for any industrial applications.

All You Need to Know About Double Block & Bleed Valves

A double block and bleed valve is an essential component in industrial processes. Its importance cannot be denied when it comes to controlling various processes that require an enhanced level of accuracy. The double block and bleed valves are also crucial for maintenance, flow diversion, and sampling during its application.

One of the reasons why the double block and bleed valve is considered to be one of the key components of industrial processes is because of its unique design. The double block and bleed valve gives you the advantages of using three valves in a single unit. According to industry standards, the double block and bleed valve is a single valve unit that features two seating surfaces that have been designed in a closed position. This provides the valve with a durable seal that can withstand tremendous pressure not just from one but both sides of the valve, as in, the bleeding/vending cavities that are present between the seating surfaces.

There are quite a few different types of double block and bleed valves which are used for industrial purposes today. All of these products are known to provide an extremely high level of sturdiness, durability, and versatility when it comes to valves which use the double isolation and bleed (DIB) configuration.

Valve Specifications

  • Temperature ratings: -65°F to 450°F (-54°C to 232°C)
  • Pressure rating: 10,000 psig (690 Bar).
  • Quarter turn positive stop handle featuring a protective sleeve.
  • Prevention from stem blowout.
  • Enhanced system safety.
  • Versatile design, micro-finished ball for better durability.
  • High strength stem bearing
  • Smooth actuation for better performance
  • Eliminates chances of galling between the body and the valve stem.
  • Bottom loaded stem
  • Anti-static design.

Double Block and Bleed Valve Types

DBB-05 Series &#; 9.5mm Bore

The DBB-05 Series &#; 9.5mm Bore is forged from premium quality materials and features a single-piece design. The 9.5mm bore double block and bleed valve boasts of a raised face flange design with process connections, along with two half-inch female NPT outlet connections as well. This double block and bleed valve isideal for use with both 9.5 and 14mm bore specifications. The raised face flange gives it better stability while the multiple outlet connections give it the versatility it needs to be used with various different bore sizes.

DBB-05 Series &#; 14mm Bore

The double block and bleed valve also features the 14mm bore that comes in the DBB-05 Series. This double block and bleed valve is sturdy and versatile. Its construction is enhanced with its single-unit design, which minimizes the chances of breaking when exposed to harsh environments. The single-piece forged design also features a unique RF flange connection along with a ½ inch female outlet connection (NPT) for various uses. The 14mm block and bleed valve is the ideal choice for use in harsh conditions where there are temperature changes. The solid construction of the 14mm block and bleed valve ensures that it will last a long time before it needs to be replaced. Its multiple outlet connections make it compatible with various different bore sizes.

DBB-05 Series &#; 19mm Bore

The 19mm double block and bleed valve is one of the leading products in the DBB-05 Series. The product has been designed keeping the strict specifications and industry best practices. One of the reasons why this valve is one of the most sought after products in the lineup is because of its sturdy build. The DBB valve has been manufactured using only the highest quality materials to ensure its durability. The double block and bleed valve has also gone through several quality checks to ensure that it can withstand a tremendous amount of pressure. Its highly versatile design makes it possible for the double block and bore valve to be used for multiple industrial applications with ease. The 19mm bore valve features a single piece design with raised face flanged connections and outlet connections that can be used for multiple bore sizes.

DBB-10 Series &#; Full Bore (FB)

The DBB-10 Series Full Bore (FB) is one of the stand-out products when it comes to industrial applications. This double block and bleed valve comes in a full bore size, which means it can be used in multiple industries. The unique three-piece design of the double block and bleed valve minimizes the chance of corroding of parts or breakage during use. The bolted body provides the valve with the sturdiness and durability it needs to give a high level of performance even when used in harsh environments. The full bore double block and bleed valve in the DBB-10 Series features a raised face and an RTJ flange process which improves its performance. The multiple outlet connections ensure that it can be used along with other industrial attachments.

DBB-10 Series &#; Reduce Bore (RB)

As part of the DBB-10 Series, the double block and bleed valve also comes with a reduce bore, which compliment the full bore design. It offers just as much versatility and durability as the full bore valve with the exception that it is used for its unmatched level of durability. Its sturdy design is backed by the unique three-piece, bolted body that offers maximum performance without having the easy wear and tear properties of other valves. The RTJ flange and raised face design of the DBB-10 Series reduced bore valve makes it the ideal choice for use in various different industries.

Ending Note

All of the products that are available in the DBB-05 and the DBB-10 Series have been ISO : certified. This means that the double block and bleed valves have been manufacturing using only the highest quality premium materials to ensure their safety and durability. By making sure that the design and parts go through several quality control checks, manufacturers ensure that the double block and bleed valves live up to the high-quality standards that YDB Valves has been known to provide through the years. The company has enjoyed an excellent track record of designing and manufacturing the highest quality double block and bore valves along with various other types of vales for industrial purposes. The high level of versatility and durability that the products offer makes it the go-to choice for using for se

Contact us to discuss your requirements of Cryogenic Ball Valve. Our experienced sales team can help you identify the options that best suit your needs.

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