APIの特徴とメリット 607 アメリカ規格の固定ボールバルブ
A fixed ball valve is a ball valve with a fixed shaft. Depending on the installation of the seat seal ring, there are two structures: a front-seal seat and a rear-seal seat. 固定ボールバルブは主に高圧用に使用されます。, 大口径用途.
Advantages of fixed ball valves:
1. グリース注入による緊急シール: In case of unexpected seat seal failure due to foreign objects in the medium or fire, the grease injection valve provides a quick connection to a grease injection gun. The inlet pump can easily and quickly inject grease into the seat seal, 漏れを軽減する.
2. Reliable stem seal and low operating torque: 標準のシールリングに加えて, an O-ring is also installed on the packing gland, ensuring the reliability of the stem seal with double sealing. 追加されたグラファイトパッキンとグリース注入により、火災後のステム漏れを最小限に抑えます。. ステム滑り軸受とスラスト軸受によりバルブ操作が容易.
3. Full-bore or reduced-bore: Full-bore or reduced-bore structures can be selected as needed. Full-bore valves have the same flow orifice diameter as the pipeline inner diameter, パイプラインの清掃を促進する. 4. Extendable Stem: The valve stem can be extended to meet installation or operational needs. Extended stem ball valves are particularly suitable for applications requiring underground pipeline installation, 都市ガス導管など. The extended stem dimension is determined according to customer requirements.
5. 柔軟な運用: 低摩擦係数で自己潤滑性に優れたバルブシートとステムベアリングを採用, バルブの作動トルクが大幅に軽減されます. したがって, シールグリスを塗布しなくても, the valve can be operated smoothly and flexibly for extended periods.
