AWK butterfly valve DN150 (6")
The DN150 (6") FL X FL ANSI AWWA OS&Y butterfly valve with GG-GJL cast iron body and C36000 bronze stem is a versatile device commonly used in industrial and water treatment applications. This type of valve, particularly efficient for controlling the flow of liquids in medium-diameter pipes, stands out for its robustness and reliability.
The valve features a body made of GG-GJL gray cast iron , known for its excellent mechanical strength and ability to withstand heavy stresses, even in industrial environments. Its flanges on both ends are designed according to the ANSI standard, ensuring a safe and standardized connection to other equipment or piping. The valve's nominal size is 150 mm (6 inches) , making it suitable for medium-flow liquid applications.
The main component is the internal disc, which rotates perpendicular to the flow of liquid, blocking it or regulating its intensity. The butterfly disc is operated by a C36000 bronze stem, which ensures high corrosion resistance, a crucial factor when working in humid environments or in contact with aggressive liquids.
Butterfly valves are designed to provide rapid opening and closing, with a 90° rotation of the disc. Thanks to the OS&Y configuration, the stem moves externally from the valve body, allowing easy access to the threads and simplifying maintenance. The cast iron body and metal disc give the valve sufficient mechanical strength to withstand high pressures, while maintaining a relatively compact and lightweight structure.
The AVK DN150 butterfly valve is simple to operate: by turning the handwheel, the disc moves from a fully open to fully closed position in a matter of seconds, thus regulating the flow. It is particularly useful in situations where frequent adjustment or rapid flow control is required, such as in water distribution networks or wastewater treatment plants.
The valve can be combined with electric, pneumatic, or hydraulic actuators for system automation. This accessory becomes essential in systems requiring remote control or where direct access to the valve is difficult. Additionally, pressure or flow sensors can be integrated to monitor system performance in real time.
Fluid flow rate and pressure within the system can be optimized using formulas such as the Darcy-Weisbach , which takes into account the internal diameter, pipe length, flow velocity, and the fluid's friction coefficient. For valves like this, it is important to ensure that operating conditions do not exceed the nominal DN150 specifications, especially in terms of maximum allowable pressure.
Maintenance of the DN150 butterfly valve requires periodic inspection of the stem and seals, which may wear over time. Thanks to the OS&Y system, the stem is easily accessible for lubrication or replacement of parts. On a used unit, it is essential to verify that the stem is still in good condition and that the disc moves without excessive friction or leaks.
A butterfly valve like the AVK DN150 , if used, can represent an excellent purchase opportunity if the main components are checked to be intact and well-maintained. In particular, it is necessary to check:
Butterfly valves like the AVK DN150 are widely used in water treatment, the chemical industry, water distribution networks, and many other industrial sectors. Choosing a used valve like this can result in significant savings without significantly compromising performance, especially if properly maintained.
Buying a used valve can be a smart choice, especially when you are confident in the quality and robustness of the product.
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