Whether you are replacing or purchasing a new ductile iron butterfly valve, you should always look for one that has been ANSI/NSF 61 & 372 certified. These valves are extremely durable, making them an excellent choice for industrial applications.
Purchasing a new valve can be costly. A ductile iron butterfly valve can be more expensive than a cast iron valve. However, there are some advantages to using ductile iron.
Cast iron is an older alloy than ductile iron. Unlike cast iron, ductile iron corrodes less easily. It has a high tensile and yield strength. It is ideal for high-pressure applications.
Ductile iron valves come in a variety of sizes. They are available in two pressure classes. The Class 150 ductile iron seals up to 250 psi while the Class 300 ductile iron seals up to 640 psi.
The resilient wedge gate valves made of ductile iron are intended for use in sewage, fire protection, and potable water applications. The resilient wedge design ensures that there is no leakage. It comes in a variety of sizes and includes integrated lifting devices.
The National Sanitation Foundation developed both ANSI/NSF 372 and ANSI/NSF 61 standards. Both are concerned with water treatment systems. NSF provides a series of standards that address the safety of a variety of plumbing materials in order to ensure the quality of water for human consumption.
NSF/ANSI 372 addresses the lead content of drinking water system components. It also includes measurement methods. The standard is modeled after AB 1953, a law passed by the California legislature.
Avoiding close-coupled components is the simplest way to avoid lead leaching. The National Sanitation Foundation has a program that allows manufacturers to request component testing and certification.
A water treatment system must pass a variety of laboratory tests in order to meet a specific standard. A chemical test may be included. Each valve must also be tested for a leak-tight seating mechanism. The air valve for water must be tested for rated performance as well.
NIBCO(r) Press System(r) lug butterfly valve is a full featured product that is user friendly and quick to install. A press-to-connect end connection, an inboard bead, and EPDM O-rings are included. It also has a 200 psi bubble-tight shutoff. The NIBCO(r) Press System(r) includes a comprehensive range of precision engineered products and accessories.
For many commercial applications, the NIBCO(r) Press system(r) lug style butterfly valve is the obvious choice. It is an excellent choice for hot and cold potable water applications, vacuum service, and HVAC services. It's also great for fire alarm systems and high-performance system applications.
The NIBCO(r) lug style butterfly valve is also the smallest in its class. They are made of a hydraulic fluid-compatible nylon-bonded ductile iron disc. They can be positioned by using gland flange studs. They're also lighter and easier to install in a system.
Flow+ manufactures ductile iron resilient seated butterfly valve for use in a variety of industries. These valves have several advantages, including their tough construction, leak-tight seating mechanism, and ability to withstand pressures of up to 1440 PSI. These valves come in a variety of sizes, including the ST Series, which is built to MSS SP-67 specifications.
The valves come with a variety of features, including an actuating stem, a gear operator, an ISO 5211 mounting flange, and an ASME 125/150 flange. These valves come in a variety of sizes, including 2", 3", and 4".
A fusion-bonded epoxy coating is also applied to the interior and exterior of the valves. This coating contributes to a smooth flow passageway, which reduces flow resistance.
The AFC Valve Factory guarantees that every butterfly valve seat it manufactures will pass hydrostatic testing. The shell test pressure is 1.5 * and the seat test pressure is 1.1 *, respectively. With the testes valve, we are confident that every valve in the water system can be serviced properly. EN12266 was the code we used. We'll follow the UL/FM process for products that conform to UL and FM standards.
Using a standard manufacturing process Every manufacturing step involves valve control. AFC's quality management system oversees every stage of manufacturing, from castings to machining coatings to assembly, testing, and packaging. Uncontrolled processes can lead to a subpar product.
Our team's 30 years of experience, as well as extensive feedback from field workers, went into the design of the valve. Our product has proven to be far more durable than other valves, as well as much easier to use on the job. All valves are designed in accordance with various standards. One example is gate valves. It can be customized to meet EN, AS, UL, UL, or FMS standards. AWWA and EN standards can be met by butterfly valves with double eccentrics. Each product has its own set of standards that must be met.
China has the most extensive and efficient supply chain. Castings are the most expensive component of the valve's water. China's high-quality castings improve year after year, but they remain reasonably priced. It is possible to compare quality and price. AFC valve is the best option for finding the right balance of quality and price.
The Cameron DEMCO manual butterfly valve 313207 is an excellent choice for dealing with water or chemically inactive liquids. This valve has a one-piece body, a dry stem journal, and self-centering in an ASME Class 150 flange pattern. It comes in a variety of sizes and is perfect for oil and gas applications.
The butterfly valve is made of ductile iron, which means it will not lose shape under extreme pressure. In certain environments, it also provides superior corrosion resistance.
The wetted surface of the valve must be weight-protected from lead. It must also be chemically treated for disinfecting purposes and be able to withstand a chlorine residual concentration for 24 hours.
The DEMCO butterfly valve has a bi-directional flow way, meaning that the valve is designed to seal against both the flange faces and the full disc opening. It also has a 0 degree disc angle, so it opens and closes in the same direction. It is detachable for inspection and replacement. It can also be cleaned with a lubricant that does not contain hydrocarbons.
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