Valves are ubiquitous in our homes, although their presence often goes unnoticed until a plumbing issue arises. Their primary purpose is to regulate, direct, or control the flow of liquids or gases by opening, closing, or partially obstructing various passageways. Here’s a comprehensive guide to the different types of household valves and their applications.
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Brass valves typeBall Valves
Gate Valves
Globe Valves
Check Valves
Pressure Reducing Valves
Butterfly Valves
Solenoid Valves
Thermostatic Mixing Valves
Gate valves are linear valves having a place with the shutoff valve family. Distinct by its wedge-like circle, the gate valve separates media because it can control the media. This valve is used in applications where tight fixing is needed. A blade gate valve is excellent in thicker and viscous media.
Gate valves give little strain drops since no problem comes in the method of the media stream. The gate works by the gate disc moving upwards to open the valve. It closes by moving the disc downwards to meet with the seats.
11/2-inch gate valveGlobe valves are designed for regulating or throttling flow, offering more precise control with a globe-shaped obstruction in the flow path. Gate valves, on the other hand, are primarily used for on/off flow control, providing a straight-through flow path when fully open.
A pressure relief valve is a safety valve that automatically releases excess pressure from a system to prevent damage or rupture. It opens when the pressure exceeds a pre-set limit and reseals when the pressure returns to a safe level.
Flows can change a lot when there are irregular loads or when starting up or shutting down. Reactions from boilers or reactors linked to each other can cause the pressure to rise or fall more than the amount that user-controlled equipment (like pumps and heat exchangers) adds. Pressure relief valves help ensure that the pressure in heating systems doesn’t change for no reason.
Similarly, too much pressure may damage equipment in pneumatic systems with multiple parts. A pressure relief valve may prevent premature failure of the machine and can be part of a scheduled upkeep schedule.
When the pressure in a liquid drops quickly below the gas pressure, this is called cavitation. If a centrifugal pump works against a closed system, the excess pressure must escape from the pump housing. This makes places with low pressure, which could lead to cavitation. Relief valves avoid the housing by opening when the pressure gets too high. This takes the extra pressure out slowly. And because it keeps the pump from cavitating, it lasts longer.
Consider the following criteria when purchasing a pressure relief valve. For more information, consult our guide on selecting relief and safety valves.
Body and seal materials: Make sure that the components of the relief valve are well-suited to the media.
The flow of discharge: Make sure that the relief valve is of sufficient capacity to discharge adequately under extreme conditions.
Minimum/maximum operating pressure: Ensure that the relief valve is compatible with the pressure limits of the system.
Adjustable versus non-adjustable: A flexible relief valve is helpful when the intended set pressure is unknown or subject to change over the valve’s lifetime.
A ball valve uses a spherical closure element (the ball) to control fluid flow. It comprises a hollowed-out ball with a hole or port in the center. The ball has a bore through which the fluid can pass when the valve is open, and it can be rotated within the valve body to block or allow the flow.
Ball valves provide a full bore for unrestricted flow and minimal pressure drop. They are commonly employed in various industries for on/off and throttling applications, offering reliable shutoff capabilities.
Ball and gate valves work for the same purpose. However, their structural qualities differ significantly. Commonly referred to as “rotational” valves, ball valves consist of a stem and ball that rotates horizontally. Applications need on/off control without pressure drop that best suits these valves.
Gate valves are opened by removing a round or rectangular gate (or wedge) from the fluid’s path. Since the sealing area between the gate and seats is flat, gate valves are frequently used when a fluid stream in a straight line with minimal restriction is required.
As a result of their design, ball valves can perform an almost instantaneous shutoff, whereas gate valves cannot. This makes ball valves the superior option for rapid cycle speed applications. The 90° operation of ball valves makes them easier to manually and automatically cycle.
ball valve’s spare partsSolenoid valves are electromechanical devices that use an electric current to maintain the flow of fluids or gases. It consists of a coil of wire called a solenoid, which generates a magnetic field when an electric current is passed through it. This magnetic field acts upon a movable plunger or valve disc, opening or closing the valve depending on the direction of the current.
An electromagnetic field is produced by bypassing the electric current through the coil. This electromagnetic field makes the actuator ascend or descend. Solenoid valves use this mechanism to open or close the valve.
Typical applications for domestic and industrial solenoid valves include:
A globe valve controls fluid flow through a disc’s linear motion or plugs against a stationary ring seat. It is known for its spherical shape, which resembles a globe. Here are its advantages, disadvantages, and main applications:
The globe valve has a disc that travels vertically through the valve stem, whereas the ball valve has a hollow ball that rotates within the valve.
This depends upon the intended application. Globe valves perform better in applications requiring throttling, whereas ball valves perform better as shutoff valves.
A check valve, a non-return valve, or a one-way valve is a valve that permits fluid to stream in one direction and prevents backflow in the opposite direction. It is designed to open and close based on the flow direction automatically. Here’s some information about check valves:
It consists of a movable disc, called the check valve disc or flap, that opens when the fluid flows in the desired direction and closes to prevent reverse flow. The disc is typically hinged or mounted on a spring mechanism. When the flow is in the correct order, the fluid pushes the disc open against the spring or hinge, allowing it to pass through the valve. However, if there is backflow or reverse flow, the disc is forced back into its closed position, sealing off the valve and preventing the fluid from flowing backward.
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Spring one-way check valveAdvantages of Check Valves:
Disadvantages of Check Valves:
The needle valve is the pressure and flow regulator. Occasionally, it is also called the plunger valve. However, it aids in regulating fluid volume and pressure within the tube lines. This valve’s actuation and change cycle is excellent. Despite this, it provides precise control over the fluid stream. However, the needle valve applies to high pressure and moderate flow rate. The working mechanism is comparable to that of a piston check valve. The only dissimilarity is the size of the piston used in the needle valve, which is smaller.
The needle valve construction
Nevertheless, the valve seat design of
Dimension of Needle Valves
SizeHLW1/8 inches805660¼ inches8056603/8 inches805660½ inches815860¾ inches8562601 inch1007070Size and dimensionsA plug valve uses a cylindrical or tapered plug to control fluid flow through a pipe or pipeline. The plug has a through-hole or port that can be aligned with the pipe to allow flow or rotated to block the flow. Here are the main features of a plug valve
It is used in oil and gas, petrochemical, water treatment, and wastewater management. They are well-suited for applications that require on/off control or frequent cycling and can handle abrasive or corrosive fluids.
A pinch valve is a kind of valve that controls the flow of fluid by pinching or compressing a flexible tube or sleeve. It is designed to provide a tight shutoff by directly squeezing the tube to stop the flow. Here’s some information about pinch valves and their applications:
Copper pinch valveA pinch valve consists of a housing or body, a flexible tube or sleeve, and a mechanism to pinch or compress the tube. When the valve opens, the tube is uncompressed, allowing fluid flow. To close the valve, the mechanism pinches or compresses the tube, effectively shutting off the flow.
The distinctive design of pinch valves affords them the following benefits:
There are a few disadvantages to pinch valves:
An angle valve has an angled body, typically at a 90-degree angle, with an inlet and an outlet forming an “L” shape. It is also known as a corner valve or angle stop valve. Angle valves are commonly used to control water flow in plumbing systems. Here are some key features and applications of angle valves:
If you are upgrading or renewing your faucet or other fixtures in your home, or if you need to repair them, you can use the angle stop valve to close off the water to the devices or fixture that requires repair rather than turning off the water to the entire plumbing system.
During a water leak or even a complete pipe burst, you can use the angle stop to turn off the primary water supply to the appliance or fixture until necessary repairs are made.
Copper is considered the best material for angle valves. Yet, It has a longer lifespan and provides superior service. Zinc alloy is susceptible to oxidation and has a reduced service life compared to copper. Plastic or PVC is not attractive and has a reduced lifespan. In addition, metal alloys have an improved sheen and luster.
Generally, four locations in the home require angle stop valves: the cold water angle stop valve on the toilet water nozzle, the cold and hot angle stop valves on the wash basin and wash basin on the nozzle, the cold and hot angle stop valves on the sump on the sink, and the two cold valves on the water heater on the water nozzle. In addition, if a water purifier is present, an angle valve for cold water must be installed.
Application: Determine the specific application and the conditions in which the valve will be used. Consider factors such as the kind of fluid (liquid, gas, or slurry), temperature, pressure, flow rate, and any special requirements or environmental considerations.
Material of Construction: Consider the compatibility of the valve materials with the fluid being handled. Valves are accessible in different materials such as brass, stainless steel, cast iron, PVC, and exotic alloys. Ensure the materials suit the fluid’s chemical composition, temperature, and pressure.
Valve Type: Select the appropriate valve type based on the application requirements. Common types include ball valves, gate valves, check valves, globe valves, butterfly valves, and plug valves. Each class has advantages and limitations, so choose one that suits your needs.
Size and Connection: Determine the required valve size based on the pipe or system specifications. Consider the connection type, such as threaded, flanged, or welded, and ensure it matches the existing piping or fittings.
Standards and Certifications: Check if the valve meets relevant industry standards and certifications, such as ANSI, API, ISO, or specific safety or regulatory requirements for your application.
Sealing and Leakage: Evaluate the valve’s sealing mechanism and capacity to give a tight seal when closed. Consider factors such as leakage rates, sealing materials, and the valve’s ability to prevent backflow or leakage in both directions.
Here are some commonly used materials for valve construction and their typical applications:
Knowing the various household valves and their functions can give homeowners a better understanding of their plumbing system. This knowledge is invaluable, especially when troubleshooting issues or planning renovations. While some valves offer a simple open-close mechanism, others play pivotal roles in safety, conservation, and appliance protection.
A valve is a very useful device for different applications. It controls, regulates, and directs the stream of liquids and gases in the pipe by opening, closing, or partially opening the passageways for the pipeline stream. There are many types of valves, and every valve has its application. Valves are used for different purposes, including residential, industrial, agriculture, transport, mining, power, oil and gas, and all sectors.
Valves are essential components in various industrial applications, including the processing of oil and gas, water treatment, power generation, and chemical manufacturing. They control the flow of liquids, gases, and other materials through pipelines, ensuring that the process runs smoothly and safely. When it comes to purchasing industrial valves, it’s essential to consider several factors to ensure you’re making the right decision. In this blog post, we’ll guide you through the process of buying industrial valves and help you make an informed purchase.
The first step in buying industrial valves is to determine the type of valve that is appropriate for your application. There are several types of industrial valves, including ball valves, gate valves, globe valves, check valves, and diaphragm valves, among others. Each type of valve is designed to perform specific functions, and choosing the right type will depend on the characteristics of the fluid or material you’re handling, the temperature and pressure of the system, and the level of control you need.
industrial valvesAnother important factor to consider when buying industrial valves is the size and pressure rating. Valves come in different sizes and pressure ratings, and you must choose the appropriate size and pressure rating for your system. The size of the valve is determined by the diameter of the pipeline it will be installed on, and the pressure rating will depend on the maximum pressure the valve can withstand without failing. It’s essential to choose a valve with the correct size and pressure rating to ensure it operates safely and effectively.
When purchasing industrial valves, it’s essential to ensure that they meet relevant certifications and compliance requirements. This will help you avoid purchasing substandard products that may fail prematurely or pose a safety hazard. The most common certifications for industrial valves include API, ISO, and CE. Make sure the valve you choose meets the necessary certifications and standards for your industry and application.
The reputation of the manufacturer is another important factor to consider when buying industrial valves. You want to purchase valves from a reputable manufacturer with a history of producing high-quality products. Look for manufacturers with a solid track record of producing valves that are reliable, safe, and durable. You can research the manufacturer’s history and customer feedback to get a better understanding of its reputation.
The cost of industrial valves is another important factor to consider, and it’s essential to find a balance between price and quality. While it may be tempting to opt for the cheapest option, this may not always be the best decision in the long run. High-quality valves can be more expensive, but they are typically more reliable and will last longer, saving you money in the long run.
In conclusion, when buying industrial valves, it’s essential to consider several factors to ensure you’re making an informed decision. From determining the type of valve you need, to evaluating the manufacturer and considering the cost, these are all crucial factors that will impact the success of your industrial application. By taking the time to consider these factors, you can be confident that you’re making the right decision and purchasing industrial valves that will meet your needs and provide long-lasting performance. THINKTANK is one of the best industrial valve manufacturers in China, so if you have any questions, please do not hesitate to contact us for a free consultation.
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