Casting Ball Valve VS Forged Ball Valve
Casting Ball Valve:
Casting ball valves are produced through the casting process, where molten metal is poured into a mold
to create the valve body and components. This method allows for the production of complex shapes and
larger-sized valves at a lower cost. They are suitable for general industrial applications with moderate
operating conditions.
Forged Ball Valve:
Forged ball valves, on the other hand, are manufactured through the forging process, where metal is
compressed and shaped under high pressure. This results in a more robust and compact structure, making
forged ball valves ideal for high-pressure and high-temperature applications. The forging process
enhances the mechanical properties, providing increased strength and resistance to mechanical stresses.
Choosing the Right Valve:
The selection between casting and forged ball valves depends on the specific requirements of the
application. For lower pressure and temperature applications with cost considerations, casting ball
valves offer a cost-effective solution. However, when dealing with high-pressure or high-temperature
conditions that demand superior mechanical properties, forged ball valves are the preferred choice.
Differences between DBB, DIB-1, DIB-2
DBB (Double Block & Bleed):
Provides reliable isolation and double block capabilities, ensuring enhanced safety in critical
processes.
DIB-1:
DIB-1 ball valves have DPE seats both upstream and downstream to provide a seal in both directions. For
the DIB-1 configuration, over pressurization of the cavity is avoided by the use of an external relief
valve. With the ball in the closed position and pressure on the upstream side, the cavity pressure will
increase in case of upstream seat failure. The cavity pressure will cause a double piston effect on the
downstream seat creating a second seal on the ball.
DIB-2:
For the DIB-2 configuration, one seat SPE and the other DPE, cavity over-pressurization is internally
controlled within the line. If the upstream seat leaks, then there is automatic cavity pressure relief
on the upstream side and the downstream seat will provide isolation due to double piston effect.
The types of end connection - RF/RTJ/SW/BW/NPT
RF (Raised Face):
Commonly used for flanged connections, providing secure sealing and easy alignment.
RTJ (Ring Type Joint):
Ideal for high-pressure applications, ensuring robust sealing with metal-to-metal contact.
SW (Socket Weld):
Suitable for welded connections, offering reliable joint integrity and reduced stress concentration.
BW (Butt Weld):
Perfect for pipeline connections, ensuring strong and leak-resistant joints.
NPT (National Pipe Thread):
Versatile threaded connections, easy to install and suitable for various applications.
Soft seated VS metal seated
Soft Seated Ball Valves:
Soft seated ball valves feature a soft sealing material, such as PTFE (Teflon), which ensures excellent
sealing capabilities. When the valve is closed, the soft seat forms a tight seal against the ball,
preventing any leakage. Soft seated ball valves are ideal for applications that require bubble-tight
shut-off and low torque operation. They are commonly used in industries where leakage and environmental
concerns are critical factors.
Metal Seated Ball Valves:
Metal seated ball valves, as the name suggests, have metal-to-metal sealing surfaces between the ball
and the seat. These valves are designed to withstand high temperatures and abrasive media, making them
suitable for applications involving harsh conditions and abrasive fluids. Metal seated ball valves are
more robust and durable than soft seated ones, ensuring a longer service life and reduced maintenance
requirements.
Choosing the Right Valve:
Selecting the appropriate valve type depends on the specific application requirements. Soft seated ball
valves are well-suited for applications where leak-tight sealing and low torque operation are essential.
On the other hand, metal seated ball valves are the go-to choice for applications involving high
temperatures, abrasive media, and extended service life. Consulting with valve experts can help
determine the best-suited valve for each unique situation, ensuring optimal performance and efficiency
in any industrial process.
OEM & ODM service
As a trusted OEM& ODM partner to top valve brands worldwide, CARILO's Ball Valve Team delivers top-notch design drawings and quality. Enjoy the design and excellence of top valve brands at a favorable price.
Applications
Our ball valves excel in various industries, including petrochemicals, industrial gas, chemical, power generation, refining, and pulp&paper.
INSTALLATION, OPERATING, MAINTENANCE AND STORAGE MANUAL
Ensure optimal performance and longevity with our comprehensive manual, reflecting CARILO's dedication to customer satisfaction and excellence.
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