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Product Overview: Primarily used in drainage systems, this device is installed on vertical pipelines and operates by leveraging the pressure difference within the system along with the weight of the valve flap itself to achieve opening, closing, and lifting actions.

1: Main external dimensions: DN15–1000

2: Nominal pressure: PN1.0–2.5

3: Main component materials: gray cast iron, ductile iron, carbon steel

4: Applicable media: Water, oil, (steam), acids, bases, and more

5: Operating Temperature: ≤80°C

6: Design and Application Standards: GB, BS, ANSI, JIS, DIN, API

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