ASTM F993 Standard Specification for Valve Locking Devices
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ASTM International
Standard Specification for Valve Locking Devices
N F993
Annotation
This specification2 covers the application, design, and materials for valve locking devices.
Locking devices Types I and II described in this specification are designed to secure the valve in a fully opened or completely closed position.
This specification does not apply to valves equipped with locking devices from the valve manufacturer, unless this standard is invoked in the procurement ordering data for the valve or its locking device, or both.
This specification is intended to supersede NASEA drawing S4824-1385509. However, cancellation of that drawing and adoption of this specification can only be effected by the navy.
2 This specification is intended to supersede NAVSEA Drawing S4824-1385509. However, cancellation of that drawing and adoption of this specification can only be effected by the Navy.
Автоматический перевод:
Стандартная спецификация для устройств захвата клапана
Этот specification2 покрывает применение, дизайн и материалы для устройств захвата клапана.
Захват Типов I и II устройств, описанных в этой спецификации, разработан для обеспечения клапана в полностью открытой или абсолютно закрытой позиции.
