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The Kitz 4-inch swing check valve is designed to prevent backflow in industrial pipelines with high accuracy and durability. Its body is made of ductile iron or carbon steel for superior pressure and corrosion resistance, while the disc is constructed from stainless steel with a reinforced hinge mechanism. The valve is rated for PN16 to Class 300 pressure according to ASME B16.34 standards and can operate at temperatures up to approximately 300°C. The flanged connection complies with ASME B16.5 or JIS B2220 standards, allowing safe and fast installation between standard flanged pipelines. The hinge system with wear-resistant bearings and internal sealing made of graphite or PTFE ensures smooth, silent operation and minimal leakage.
The 4-inch Kitz swing check valve operates automatically, allowing flow in one direction without external force. Its weight ranges from 15 to 25 kilograms, depending on body material. The robust structure resists impact and hydraulic shock, making it suitable for water, steam, air, gas, oil, and chemical fluid lines. The external epoxy or zinc-phosphate coating protects against corrosion and extends the valve’s service life. With reliable performance, easy maintenance, and premium build quality, the Kitz 4-inch swing check valve is an ideal choice for industrial and high-pressure pipeline applications.
WEBSITE: Kitz 4-inch swing check valve Iran
In KITZ swing check valves, the body is typically made of A105 alloy steel with a tensile strength of about 485 MPa to withstand Class 600 nominal pressure. The seat is reinforced with hardfacing alloys such as Stellite, providing wear resistance in the 40 to 50 Rockwell C range for extended service life. The swing disc is constructed with a strengthened hinge and commonly manufactured from stainless steel 410, offering temperature resistance up to 425 degrees Celsius. This material configuration ensures stable operation in steam, oil, and corrosive fluid systems while preventing backflow leakage under variable pressure conditions.
