butterfly safety valve brands

Butterfly valves are a popular choice because these are easy to install, very inexpensive and are available in almost all sizes. These are usually used in regulation services and for on-off purposes.

Butterfly valves are important to processes and operations in many different industries. This is because of their range in size and their ability to control the flow of liquids, gases, and slurries. Not only can butterfly valves stop or start flow, but when partially opened, they can also limit or reduce flow as desired.

Customers from many industries purchase butterfly valves, including those in food processing (liquid), waterworks, irrigation, pipe fabrication, industrial manufacturing, heating systems, and chemical transport.

While there are many different possible applications for butterfly valves, some specific uses include vacuuming, petroleum recovering, compressed air services, air and water cooling, HVAC, slurry services, high pressure water services, high temperature water services, steam services, and fire protection.

Butterfly valves have vast usages because of the variety of designs and materials available. From plain water to abrasive liquids or slurries, these can be fitted in any of the pipelines. These are usually employed inSlurries or sludges applications

One of the first people to use the butterfly valve was Scottish engineer and chemist James Watt. Watt used them as an important hardware element in his steam engine designs in the late 1700s. People did not really begin using butterfly valves in earnest, though, until the 1870s, when engineers used them as a part of a device with which they controlled air and steam flow to fans and turbines.

As time went on, manufacturers were able to make butterfly valves that were smaller, lighter, more powerful, and more heat resistant. One of the most important changes for butterfly valves came after World War II, when engineers started manufacturing them with seal accessories. These seals were made from synthetic rubbers. With them, butterfly valves became suitable for a much wider range of applications.

Then, in 1969, an American named James E. Hemphill received a patent for an updated butterfly valve design. His design allowed operators to reduce the amount of hydrodynamic torque they used to shift the valve output.

Then, in 1969, an American named James E. Hemphill received a patent for an updated butterfly valve design. His design allowed operators to reduce the amount of hydrodynamic torque they used to shift the valve output.

Butterfly valves offer many advantages to their users. First, they feature a compact design. Because of this compact design, they require less space to work than many other valves. Second, butterfly valves are fairly low maintenance. Next, they provide high quality flow blocking. Likewise, they do not leak, yet they are easy to open when you need to. Another advantage of butterfly valves is the fact that they are inexpensive.

Butterfly valves need less material, are easier to design and manufacture, and are often the more cost-effective option when compared to other valve types.

It is true that the disadvantages of butterfly valves outweigh its pros. But still there are a few things to keep in mind before using these valves.Even when completely opened, a small area of the disc is always in the way of the flowing material. This could both affect the movement of placement of the disc and the pressure switch in the pipeline.

Manufacturers generally use plastic, stainless steel, or cast iron when creating butterfly valves. They occasionally also use aluminum. Different materials and standards of performance are expected for different applications.

Of the three main materials used to create butterfly valves, plastic is the least common. While it is cost-effective, it can’t withstand harsh chemicals or high pressures.

Stainless steel is more durable than other metals (including untreated steel) and it can easily be cleaned in applications where sanitation is a concern. For the most heavy duty uses, cast iron is the material of choice. It’s strong and able to hold back high pressure for as long as necessary when the valve is shut.

Butterfly valves have a few main features. These include the body, the disk, the stem, and the seat. They also feature an actuator, such as a lever. Operators can turn the valve actuator in order to change the disc position.

The disc works like a gate in the gate valve, the plug in the plug valve, the ball in the ball valve, etc. When it rotates 90° to be parallel to the fluid flow, the disc is in an open position. In this position, the disc will permit all fluids to pass. When it rotates again, the disc enters a closed position and blocks fluid flow. Based on disc orientation and design, manufacturers can manipulate operating torque, sealing, and/or flow.

The seat is connected to the body via pressing, bonding, or a locking mechanism. Manufacturers usually make the seat from a polymer or elastomer. The goal of the seat is to provide the valve with shut-off. That is why the value of turning force that a butterfly valve requires to close is called "seating torque," and the turning force that a butterfly valve requires to rotate its closure element is called "unseating torque."

The actuators can either be mechanical or automatic to regulate the flow through the pipeline by dislocating the disc. While closed, the disc covers the valve perforation and the fluid is always touching it. It creates a drop in pressure. To switch the disc’s position so that it gives way to the fluid to flow, one needs to turn the rod by a quarter turn.

There are several types and series of butterfly valves, each with a unique purpose. These include high performance butterfly valves, pneumatic butterfly valves, butterfly valves with multiple shut-off points, triple offset butterfly valves, flanged butterfly valves, wafer style butterfly valves, lug butterfly valves, traditional butterfly valves, electric butterfly valves, AWWA certified butterfly valves, plastic butterfly valves, stainless steel butterfly valves, and aluminum butterfly valves.

Triple offset butterfly valves provide a tighter seal because they are mounted in three positions. At each position, they seal the pipe so that it will not leak.

AWWA certified butterfly valves meet all of the safety and efficiency standards of the American Water Works Association. They are made from cast iron or ductile iron, with a rubber or stainless-steel seat. Most often, people use this valve type to move potable water, which is why they must meet standards for human consumption.

Plastic valves are simply discs composed of thermoplastic materials molded into one piece. Plastic valves offer the advantages of high flexibility and low cost. They are not, however, as thermally stable or pressure resistant as metal valves.

Stainless steel butterfly valves are used in applications where resistance to corrosion and oxidation is important for consistent performance. Stainless steel is not only corrosion resistant and oxidation resistant, but also easy to clean and sanitize. Unlike many butterfly valve types, stainless steel butterfly valves can be used in food and medical applications.

Aluminum butterfly valves are a less common type of butterfly valve. Customers value aluminum butterfly valves because they are strong and exceptionally lightweight. They have a big disadvantage, though, which is that they are not corrosion resistant.

High performance butterfly valves are used to control the flow in systems with extremely high pressure or high stakes. Examples of such systems include those that carry chemicals, slurries, and hazardous gases. Usually, high performance butterfly valves manifest as double offset valves.

Wafer end butterfly valves usually have four holes. These holes are supposed to line up with the connected pipe. This type of valve is usually placed between two flanges in the pipe to clamp. These are installed effortlessly but are not ideal to use at the pipeline ends.

Wafer style butterfly valves are installed in between two flanges with nuts and bolts. They are held in place by the pressure put on them by the nuts on the backside of the flanges. Wafer butterfly valves are one of the most common types of butterfly valve products.

The lug body has projecting lugs around the perimeter that allow a passage to bolt holes, same as through flanges. End-of-line service is possible with lug-style butterfly valves, although a blind flange is always suggested.

Lug butterfly valves are butterfly valves that feature threaded metal inserts located inside bolt holes. With these inserts, users can install bolts without nuts. The main application of lug style butterfly valves is connecting and disconnecting piping systems from one side without distributing the other side of the system.

The body of this type of valve consists of flanges that are compatible with the pipe flanges. These are easier to install or remove because they are simply bolted with the pipe flanges.

Flanged valves are a version of the butterfly valve that uses a different method of pipe connection. Flanged butterfly valves have raised, or winged, edges in the enclosure so that they can be bolted in between two pipes.

The angled ends of the pipe and the straight end of the valve are welded together to form a butt-weld connection. These are appropriate to use in high pressure environments as direct welding secures the connection.

Manually actuated butterfly valves involve human input to operate. That is why they are very cheap. Manually actuated butterfly valves are further divided into two types depending on the manual actuator used:

These types of butterfly valves are actuated automatically and can be managed from afar. Since these do not require human interaction for normal working these can manage the efficient working of larger valves in less time. These usually come with a fail-safe option and can be managed manually in such cases. Three types of automatic actuators include

In this type of disc design, the stem goes through the center of the disc. Some sections of the disc are always in contact with or scraping the seat when it opens or closes. As a result of this configuration, the seat will be subjected to friction each time the valve is used. Concentric butterfly valves are the most basic type design and are used for low pressure environments.

In eccentric valves, the shaft of the valve passes behind the disc instead of going through its centerline. Which means the shaft is located opposite to the flow. This configuration of shaft to disc is the basis of three different types of eccentric butterfly valves.Single offset valves are the ones in which the shaft is offset from just the body centerline. This helps reduce the wear and tear of the seal as it minimizes the contact of the disc with the seal prior to closure.

Double offset valves have the shaft offset not only from the body center line but also from pipe centerline. This additional offset ensures that the disc will only rub against the seal slightly i.e. to about one to three degrees.

Triple offset butterfly valves have another offset when compared to double offset valves. It is a conical offset right where the disc is connected to the seal. A butterfly valve with three offsets is more efficient and wear-resistant. Metal seats are commonly used in triple offset valves to generate a bubble-tight shut-off.

Before installation, make sure to always test and carefully inspect your valves to ensure that no weak points are present. Then, proceed with installation per the instructions of your valve and flange manufacturer.

Because butterfly valves are popular in such a wide range of industries, a large number of regulatory organizations put out any number of standard series related to them.

American organizations that put out butterfly valve quality and safety standards include ASTM International, American Petroleum Institute, American National Standards Institute (ANSI), Manufacturers Standardization Society, and American Society of Mechanical Engineers.

International organizations that put out butterfly valve quality and safety standards include EEMUA (United Kingdom), BSI (United Kingdom), DIN (Germany), ISO (International Organization for Standardization), CSA (Canada), European Committee for Standardization, and JSA (Japan).

If you are interested in purchasing butterfly valves for your application, we recommend you connect with a high-quality butterfly valve manufacturer. To help you find the right one, we have put together a list of some of the best butterfly valve suppliers in the business. You’ll find the profiles and contact info of these companies by scrolling towards the middle of this page.

Before you start looking at our list of butterfly valve manufacturers, though, we suggest you take some time to write down your specifications. This will help you focus your search and focus your later conversations with potential suppliers. Make sure your specifications list includes information like your delivery deadline, your budget, your standard requirements, and your customer support preferences. Once you have written all of those down, take a look at our list of suppliers. Based on your specifications, pick three or four in which you are most interested. Then, reach out to each of those manufacturers to discuss your application. After you have spoken with each of them, compare and contrast your conversations and the services that each company offers. Finally, decide which manufacturer is right for you.

When designing a butterfly valve, it is critical that manufacturers consider the properties of the liquid or gas that the valve will be expected to control after being installed.

Based on application specifications, manufacturers can create butterfly valves that come in a diverse series of standard sizes and custom sizes, and a wide range of hardware choices. For example, in some cases, manufacturers might design the shaft as two pins rather than one solid rod. To learn more about your custom options, talk to a butterfly valve supplier.

Commonly employed in pharmaceutical, chemical, and food industries, butterfly valves are used to interrupt the flow of solids, liquids, or gas. Types include concentric butterfly valves, doubly-eccentric butterfly valves, triply-eccentric butterfly valves, wafer-style butterfly valves, lug-style butterfly valves, and rotary valves.

To assist in your sourcing efforts and understanding of butterfly valve suppliers, we have compiled lists of top butterfly valve suppliers in the tables below. Table 1 displays the top featured butterfly valve suppliers. Table 2 shows the top butterfly valve suppliers based on revenue.

The butterfly valve market is taking flight. According to Allied Market Research, the market will grow at a CAGR of 6.3% from 2018 to 2025. In table 1 below, we provide information on the top featured manufacturers and suppliers of butterfly valves on Thomasnet.com. Included you"ll find each company"s location, year founded, estimated annual revenue, and brief company summary below the table.

Assured Automation has supplied actuated valves and flows components for industrial process control applications for 30 years. The company’s product line consists of standardized actuated valve assemblies and commonly used accessory items.

Hayward Flow Control manufactures process control products including butterfly valves. The company serves many industries including chemical processing and handling, food and beverage, mining, irrigation, HVAC, pharmaceutical, electronics, power generation, and more.

Here is a list of the top butterfly valve suppliers in the USA, ranked by annual revenue. In addition to the company’s annual revenues and the establishment year, the table also shows the companies’ locations. Below the table, you"ll also find a brief summary of each company"s activities.

We have presented information about top butterfly valve suppliers in two forms. First, the top 10 featured butterfly valve suppliers on Thomasnet.com. Second, the top butterfly valve suppliers in the USA, based on annual revenue.

For more detailed information on these and other suppliers, visit the Thomas Supplier Discovery Platform, which also has a selection of more than 1,200 butterfly valve suppliers. Supplier categories include plastic, triple offset, and high-performance butterfly valves.

Butterfly valves are mainly used to control a fluid’s flow rate. Depending on what material the valve is made of, it can be used for different types of fluids: chemically neutral fluids such as water or oil, sludge, food products or pharmaceutical fluids and some butterfly valves can be specially designed to operate with corrosive fluids. A butterfly valve cannot be used for fluids containing solid particles however as they could prevent it from closing...

... double-flanged Alfa Laval LKB-F butterfly valve for the reliable flow regulation of low- to medium-viscosity processing fluids and those with high particle concentrations in hygienic applications. Flanges ...

Actuated valves in the RV-FLUID series consist of a pneumatic rotary actuator series R4 that controls a ball or a butterfly valve. Ball valves come in the 2- and the ...

The DELTA butterfly valves from SPX FLOW are stop valves which can be actuated either manually or pneumatically. The valves are very robust and reliable and the space ...

... customization of the valve flow characteristic allowing users to "shape" valve response to their needs. This feature makes it an ideal solution for parallel valve positioning systems ...

Triple-offset butterfly valve, metal-seated (fire-safe), without gland packing, maintenance-free, with lever or manual gearbox, pneumatic, electric or hydraulic actuator. Body made of steel or stainless ...

... bail and butterfly valves to fit size constraints and preference. The "full bore" design of Transair valves, paired with the low coefficient of friction in the aluminum pipe ensures optimal ...

Butterfly valves are primarily used in energy generation and distribution. Typical applications are if an additional boiler needs to be connected, or for the switching over of storage tank charging. Siemens ...

... way over a million units operating worldwide, WAM VFS-type Butterfly Valves for powdery and granular materials represent one of the Group"s most industrial products.

... hoppers, or bins, VFF Silo Closure Butterfly Valves are used in all types of building material processing plants where interception of gravity-fed dry materials is required.

The Fisher 8560 Butterfly valve is a reliable, high performance control valve suitable for throttling applications requiring extremely low leakage rates.

The Durco Big Max BX2001 high-performance, all-purpose valve is designed for precise throttling control or on-off service with lighter weight piping systems and less expensive, energy-efficient actuators.

The main property of this butterfly valve is its impressive ability to set the flow rate on most gas burners. This model has been carefully certified and fully tested, to ensure safe user operation.

Thanks to their design and material diversity, centrally mounted, resilient seated shut-off and control valves are almost universally usable. Whether the medium is water, powder or gas - with a broad range of materials, ...

Thanks to their design and material diversity, centrally mounted, resilient seated shut-off and control valves are almost universally usable. Whether the medium is water, powder or gas - with a broad range of materials, ...

Thanks to their design and material diversity, centrally mounted, resilient seated shut-off and control valves are almost universally usable. Whether the medium is water, powder or gas - with a broad range of materials, ...

Double-offset butterfly valve with epoxy coating. Perfect shut-off in either flow direction. Flanged ends to EN standards, body and valve disc made of nodular cast iron.

Series BF-03 Full Lug Style Butterfly Valves are used in HVAC, irrigation, OEM, commercial, and institutional applications and wherever positive shutoff is required ...

Mapag BW series metal seated triple eccentric disc valve is designed for both control and tight shut-off in severe service. Multiple seat options makes it well suited for the refining, power, petrochemical and chemical ...

Butterfly valves are used to shut off or, less frequently, control the rate of flow of a liquid. They have either flexible or metal seals. Small-diameter models can be operated by hand, while larger versions require the use of gearing or servomotors.

Emergency situations are not the only times relief valves are active; once installed they continuously regulate the flow of substance. They can also be pre-set to open when the pressure or temperature gets to a certain point that may be dangerous. Generally valves are placed on or near the pump head of the hose, pipe or tube. A wide variety of relief valve designs exist, although most resemble ball-check valves, swing check valves or diaphragm valves.

This last is particularly useful when controlling a flow of fluids that contains suspended solids. Most relief valves are spring operated, as are the majority of check valves. One specialized type of relief valve is known as a vacuum relief valve. As opposed to a normal relief valve, which relieves high pressure, a vacuum relief valve is used to relieve dangerously low pressures, or vacuums, by inserting air or an inert gas.

Like every other type of check valve, relief valves may be constructed from a variety of materials, including PVC, brass, ductile iron, copper, polyethylene, polypropylene, aluminum, steel, stainless steel and rubber. Which raw substance is used to produce each relief valve depends on the environment said relief valve will be in. The wrong product could result in erosion or contamination of the process stream. However, as long as research is done, finding the appropriate type of relief valve is possible. Every plumbing or fluid transfer application in the industrial, commercial and domestic arenas employ or will employ check valves. In fact, check valves of all kinds are an essential part of every day life. Because they need not be supervised to function and prevent product malfunction, check valves are not only desirable but often required by law to ensure the safety of water, gas and pressure applications.

"I have been purchasing flanges from API International for a few years now and most recently check valves, expansion joints etc. They always have exceptional quality of their products and a wide selection. Between their two warehouses, they have what I need in stock 99.9% of the time and ship within a day of receiving the purchase order. RIck Runckel and his team have been top notch to us with customer service, handling our orders, quoting products, and anything else we may need. Highly recommend them as a supplier!"

The HP Series is a high performance soft seated, metal seated, fire safe butterfly valve. Body material is either Carbon steel or 316 Stainless Steel. Connections are either wafer style (HPW) or lug style (HPL) and are either 150 or 300 lb. ANSI rated. It can be equipped with a manual handle or with pneumatic or electric actuators. A full range of accessory items are available including limit switches, solenoid valves, positioners manual override devices, and bolt and flange kits.

Butterfly Valves are available in Manual, Air Actuated, or Air Actuated with two Micro switches and a Solenoid Valve. Clamp or Weld ends are standard. Other connections are available upon request. Available seat materials include Silicone, Viton®, and EPDM. Size range from 1˝ through 6˝. All products contact surfaces are available in either T304 or T316 stainless steel.

Butterfly Valves are available in Manual, Air Actuated, or Air Actuated with proximity switches and 24V Solenoid Valve. Clamp or Weld ends are standard. Other connections are available upon request.

Check Valves are widely used for both sanitary and industrial applications to prevent backflow of product. Ball Check Valves are designed to allow full product flow during processing. Once the product flow stops the ball rolls back to the seat at inlet preventing back flow. Ball Check Valves are commonly used with liquid products and installed horizontally. Sizes range 1 1/2¨ - 3¨.

Check Valves are widely used for both sanitary and industrial applications to prevent backflow of product. Spring Check Valves are designed to prevent fluid from flowing back and to create a positive shutoff. They are commonly used with liquid products and installed in the vertical position.

Check Valves are widely used for both sanitary and industrial applications to prevent backflow of product. Air Blow Check Valves are designed to evacuate lines of product or CIP solutions. Air Blow Check Valves are made of T316L Stainless Steel

Ball Valves are used in a wide variety of high pressure applications. Two factors make them popular. First, a full unrestricted flow that allows no product restrictions through the valve. Second, the three piece design and the removal of a minimal number of bolts allows service to be performed without removing the complete valve from the line.

Ball Valves are used in a wide variety of high pressure applications. A full unrestricted flow allows no product restrictions through the valve. Thus, allowing easy diversion.

Ball Valves are used in a wide variety of high pressure applications. A full unrestricted flow allows no product restrictions through the valve. Thus, allowing easy diversion. Ball Valves are available in Manual, Pneumatically Actuated, and Electrically Actuated versions. We also offer a full line of control options. Limit switches, Solenoids, and Positioners can be included with your automated valve assembly.

PVE Valves are available in three operating modules: Air Actuated; Air Actuated with an electronic control head; and manually operated. PVE valves popular applications are the following: Shut-off Valve, Divert Valve, Tank Outlet and Pressure Relief Valve. Connections consist of Clamp, Weld, Bevel Seat, and E-Line. EGMO’s PVE Valves are made of AISI 316L Stainless steel which meet all 3A requirements and are offered in 1˝ through 4˝ sizes. Unique patent pending sealing system.

The EGMO Sampling Valves are uniquely designed for process quality control, which often demands a stringent sampling process for the finished product and throughout the various production stages. Sampling plays a critical role in product verification. Sampling directly from the process can be risky for the operator as well as for the environment (contamination, pollution). Wherever product safety is a top priority, use ESVs to ensure stringent product quality control at every processing stage while elimination risks in the sampling procedure. With ESV, bacteriological samples can be taken directly from the pipeline.

High performance butterfly valves are a popular choice for many critical industrial operations. Because of their adaptability, they are suited for a wide range of temperatures, pressures, industries, and applications, including severe service.

Butterfly valves, also known as offset valves, can be used for control, on-off, or emergency shutdown, and are commonly used in pharmaceutical, chemical or food and beverage applications. These valves are popular because of their reliability and maintenance requirements.

Collins carries many of the popular high-performance butterfly valve manufacturers, including Valmet Jamesbury valves, in butterfly valve sizes up to 36". These butterfly valves can be packaged with electric and pneumatic actuators.

Emerson’s Keystone offer a complete range of butterfly valves from general purpose through to heavy duty and high performance models. With a tradition of more than 70 years, Keystone built its reputation on providing industrial process butterfly valves known for their reliability, long service life, and reduced operating costs. Independent, third-party life-cycle testing has shown that Keystone resilient-seated butterfly valves last 2.5 times longer than competitors" butterfly valves.

Our complete range of butterfly valves extends from general purpose to severe service models used for isolation and throttling applications. It includes resilient seated valves for long service life and bubble tight shutoff; high performance valves capable of temperatures from cryogenic to 1500°F (815°C) and pressures to ASME Class 1500 (PN 260); double flanged valves in sizes up to NPS 120 (DN 3000) and lined valves suitable for highly corrosive liquids, gases and slurries. With a robust construction and a high cycle life, these valves will lower your total cost of ownership.

Curtiss-Wright"s selection of Pressure Relief Valves comes from its outstanding product brands Farris and Target Rock. We endeavor to support the whole life cycle of a facility and continuously provide custom products and technologies. Boasting a reputation for producing high quality, durable products, our collection of Pressure Relief Valves is guaranteed to provide effective and reliable pressure relief.

While some basic components and activations in relieving pressure may differ between the specific types of relief valves, each aims to be 100% effective in keeping your equipment running safely. Our current range includes numerous valve types, from flanged to spring-loaded, threaded to wireless, pilot operated, and much more.

A pressure relief valve is a type of safety valve designed to control the pressure in a vessel. It protects the system and keeps the people operating the device safely in an overpressure event or equipment failure.

A pressure relief valve is designed to withstand a maximum allowable working pressure (MAWP). Once an overpressure event occurs in the system, the pressure relief valve detects pressure beyond its design"s specified capability. The pressure relief valve would then discharge the pressurized fluid or gas to flow from an auxiliary passage out of the system.

Below is an example of one of our pilot operated pressure relief valves in action; the cutaway demonstrates when high pressure is released from the system.

Air pressure relief valves can be applied to a variety of environments and equipment. Pressure relief valves are a safety valve used to keep equipment and the operators safe too. They"re instrumental in applications where proper pressure levels are vital for correct and safe operation. Such as oil and gas, power generation like central heating systems, and multi-phase applications in refining and chemical processing.

At Curtiss-Wright, we provide a range of different pressure relief valves based on two primary operations – spring-loaded and pilot operated. Spring-loaded valves can either be conventional spring-loaded or balanced spring-loaded.

Spring-loaded valves are programmed to open and close via a spring mechanism. They open when the pressure reaches an unacceptable level to release the material inside the vessel. It closes automatically when the pressure is released, and it returns to an average operating level. Spring-loaded safety valves rely on the closing force applied by a spring onto the main seating area. They can also be controlled in numerous ways, such as a remote, control panel, and computer program.

Pilot-operated relief valves operate by combining the primary relieving device (main valve) with self-actuated auxiliary pressure relief valves, also known as the pilot control. This pilot control dictates the opening and closing of the main valve and responds to system pressure. System pressure is fed from the inlet into and through the pilot control and ultimately into the main valve"s dome. In normal operating conditions, system pressure will prevent the main valve from opening.

The valves allow media to flow from an auxiliary passage and out of the system once absolute pressure is reached, whether it is a maximum or minimum level.

When the pressure is below the maximum amount, the pressure differential is slightly positive on the piston"s dome size, which keeps the main valve in the closed position. When system pressure rises and reaches the set point, the pilot will cut off flow to the dome, causing depressurization in the piston"s dome side. The pressure differential has reversed, and the piston will rise, opening the main valve, relieving pressure.

When the process pressure decreases to a specific pressure, the pilot closes, the dome is repressurized, and the main valve closes. The main difference between spring-loaded PRVs and pilot-operated is that a pilot-operated safety valve uses pressure to keep the valve closed.

Pilot-operated relief valves are controlled by hand and are typically opened often through a wheel or similar component. The user opens the valve when the gauge signifies that the system pressure is at an unsafe level; once the valve has opened and the pressure has been released, the operator can shut it by hand again.

Increasing pressure helps to maintain the pilot"s seal. Once the setpoint has been reached, the valve opens. This reduces leakage and fugitive emissions.

At set pressure the valve snaps to full lift. This can be quite violent on large pipes with significant pressure. The pressure has to drop below the set pressure in order for the piston to reseat.

At Curtiss-Wright we also provide solutions for pressure relief valve monitoring. Historically, pressure relief valves have been difficult or impossible to monitor. Our SmartPRV features a 2600 Series pressure relief valve accessorized with a wireless position monitor that alerts plant operators during an overpressure event, including the time and duration.

There are many causes of overpressure, but the most common ones are typically blocked discharge in the system, gas blowby, and fire. Even proper inspection and maintenance will not eliminate the occurrence of leakages. An air pressure relief valve is the only way to ensure a safe environment for the device, its surroundings, and operators.

A PRV and PSV are interchangeable, but there is a difference between the two valves. A pressure release valve gradually opens when experiencing pressure, whereas a pressure safety valve opens suddenly when the pressure hits a certain level of over pressurization. Safety valves can be used manually and are typically used for a permanent shutdown. Air pressure relief valves are used for operational requirements, and they gently release the pressure before it hits the maximum high-pressure point and circulates it back into the system.

Pressure relief valves should be subject to an annual test, one per year. The operator is responsible for carrying out the test, which should be done using an air compressor. It’s imperative to ensure pressure relief valves maintain their effectiveness over time and are checked for signs of corrosion and loss of functionality. Air pressure relief valves should also be checked before their installation, after each fire event, and regularly as decided by the operators.

Direct-acting solenoid valves have a direct connection with the opening and closing armature, whereas pilot-operated valves use of the process fluid to assist in piloting the operation of the valve.

A control valve works by varying the rate of fluid passing through the valve itself. As the valve stem moves, it alters the size of the passage and increases, decreases or holds steady the flow. The opening and closing of the valve is altered whenever the controlled process parameter does not reach the set point.

Control valves are usually at floor level or easily accessible via platforms. They are also located on the same equipment or pipeline as the measurement and downstream or flow measurements.

An industrial relief valve is designed to control or limit surges of pressure in a system, most often in fluid or compressed air system valves. It does so as a form of protection for the system and defending against instrument or equipment failure. They are usually present in clean water industries.

A PRV is often referred to as a pressure relief valve, which is also known as a PSV or pressure safety valve. They are used interchangeably throughout the industry depending on company standards.

Consolidated boasts 140+ years of dedicated Pressure Relief Valve (PRV) Engineering and Manufacturing expertise.  We know overpressure protection!  With more than 10 major first-to-market products and features, Consolidated continues to deliver innovative technical solutions to the world"s most challenging overpressure protection applications.  When combined with the expertise and full-scale service of the Green Tag Center (GTC) Network, Consolidated is able to provide a comprehensive approach to Valve Lifecycle Management (VLM) that is second to none.

Comprehensive Valve Lifecycle Management (VLM) enabled by state-of-the-art tools and delivered by the unparalleled Consolidated Green Tag Center (GTC) Network, Consolidated supports our product throughout the entire lifecycle.