Features
It usually adopts a two - piece structure, which is convenient for installation and maintenance. The valve stem is designed with a load - bearing anti - ejection structure, which can effectively prevent the valve stem from being ejected under high pressure and improve the safety of use. There are two design options available: full - bore and reduced - bore. The full - bore ball valve has low fluid resistance, while the reduced - bore ball valve is more suitable for occasions where space and cost are of concern.
DIN Cast Iron Ball Valve Standards
• Design and Manufacturing Standards: DIN 3357, which specifies the structure, dimensions, materials, pressure ratings, and test methods of cast iron ball valves.
• Structural Length Standards: The F4 series is used for DN15 - DN100, and the F5 series is used for DN125 - DN250.
The specific dimensions follow the DIN 3202 or EN 558 - 1 standards.
• Flange Connection Standards: The flange end dimensions comply with the EN 1092 - 2, ISO 7005 - 2, or DIN 2533 standards.
• Pressure Ratings: Usually 1.6MPa (PN16). • Pressure Test Standards: Pressure tests are carried out in accordance with the EN 12266, ISO 5208, or DIN 3230 standards to ensure the sealing performance and strength of the valve.
• Installation Dimensions Standards: The installation pad dimensions follow the ISO 5211 standard, which is convenient for the matching installation with actuators and other components.
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