Choosing a double flanged butterfly valve for your plumbing system is the first step to finding a quality valve that works in your specific application. You will be able to choose from a variety of styles, such as soft seated, semi-automatic, and metal-to-metal seated. You will also be able to choose from a variety in design, including offset discs and a fully lined design.
Metal-to-metal seated butterfly valves are among the most adaptable of the several varieties of butterfly valves that are available. They are capable of withstanding high pressures and temperatures because they were developed specifically for use in heavy-duty applications. They are comprised of a few components and have a straightforward design. They find their most common application in fields that work under intense pressure.
They are offered in single, double, and even triple offset patterns to choose from. In industrial gas applications, the double offset design is utilized the vast majority of the time. From the center line of the valve body, the double offset butterfly valve is offset in both directions. This configuration results in the creation of a second offset, which performs the function of a mechanical stop.
Depending on the service and application, there are several types of butterfly valves. These include soft seated, metal seated, and hard seals. These valves are designed for a range of different applications, such as water purification, waste water treatment, fire protection, and heat-recovery applications.
Soft seated butterfly valves are typically mid-line and are available in a variety of materials, including plastic, elastomeric materials, and metal. Soft seats provide good sealing performance and prevent fluid leakage when closed. However, their poor mechanical properties make them less suitable for high-temperature applications.
The Fully Lined Double Flanged Butterfly Valve delivers a sturdy and reliable liner for low cost and great performance. This liner was designed to withstand the severe chemical applications that the valve is intended to handle. Additionally, it provides a bubble-tight shut-off for installations that are very demanding.
The rubber linings of these valves can be purchased in a wide variety of configurations. The fully lined variety has a low coefficient of friction, excellent resistance to corrosion, and a long life expectancy in service. Options for a gearbox and an electrical actuator are also included with them. These valves are offered in a number of sizes so that they can be customized to meet your requirements.
The rubber liner of these concentric flanged butterfly valves creates a seal against both the pipe flange and the disc at the same time. Nitrile rubber is frequently used for the liner since it is more cost-effective than many of the other possibilities.
In contrast to conventional butterfly valves, the double offset butterfly valve makes use of contemporary design practices to ensure that the valve functions effectively and does not require maintenance. The sealing provided by this kind of valve is completely watertight during its entire lifespan.
The pressure surges that can damage the valve are absorbed by the ductile cast iron material that makes up the valve disc. Because of its asymmetrical design, the disc can be opened and closed using a camming action. It is designed to work well with a wide variety of substances, such as abrasives, chemicals, food, and other solids, among other things. It can be purchased in a variety of materials, including those used for the seat.
AFC Valve factory guarantees every valve to be tested hydrostatically. The test pressure for the shell and seat tests is typically 1.5 *. We are confident that each valve can work in the water system thanks to the tests. EN12266 was the preferred standard for us. Products that meet UL and FM standards are followed UL/FM test procedure.
The valves are controlled in every step of manufacturing through a standard manufacturing procedure. AFC's quality control system has been able to monitor every stage of manufacturing with IPQA. This guarantees that each step of casting, machining, coating and assembly is properly recorded and monitored. Poor quality products are due to inadequate process control.
The design of the valve is based upon thirty years of experience and lots of feedback from field employees. Our valve is easy to operate and is robust in the field. Every valve is built in accordance with various standards. The gate valve is designed to conform to EN, AS and UL standards. Butterfly valves with double eccentrics comply with the EN and AWWA standards. Every product is subject to the specific standards of its.
China is the biggest and most efficient supply chain. Castings are the biggest cost of water valves. China is producing castings of the best quality at an reasonable cost. There's always a way to judge the quality and price. AFC valve is the most effective choice to find the perfect equilibrium between quality and price.
Unlike globe valves, manual double flanged butterfly valves are not as heavy and require less space. However, they are a bit time-consuming to operate. Manual valves require a handwheel and a gear system to operate.
This type of valve also contains an elastomer seat to provide a tight seal. The seat is connected to the valve disc through a spline shaft. The resiliency of the seal prevents leakage. The seat is also designed to withstand compression forces.
The resiliency of the seal also enables minor body deformations during temperature fluctuations. The seal also energizes according to the compressive force. This helps in a uniform wedging effect.
Typically, butterfly valves are used for fire protection, water purification, air conditioning, and heating ventilation. These valves are designed to be robust and long lasting. They are also renowned for their slick seal design. In addition, they are very easy to install. They are available in various sizes and designs. They are a good choice for any application requiring a low pressure drop and high performance.
The main components of butterfly valves are the body, seat, and disc. A good quality disc will protect the valve from water hammer and pressure surges. In addition, the disc should be designed to handle high differential pressures.
Generally, a butterfly valve is used to open and close a pipe. These valves are widely used in water and electricity piping. These valves are also used in the piping of drugs and medicines. They are available in different designs and materials. Some of these valves are corrosive, but others are non-corrosive.
Concentric double flanged butterfly valves are available in a variety of materials. They can be made from cast iron or duct iron. They are also available in carbon steel. These valves have a pressure rating and comply with NF EN1074-1 and DVGW standards.
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