GB/T 25133-2010Hydraulic fluid power systems -- Assembled systems -- Methods of cleaning lines by flushing (English PDF)

National Standard of the People's Republic of China

ICS

23.100.40

Contents

• 1 Scope
• 2 Normative references
• 3 Terms and definitions
• 3.1 Flushing
• 3.2 External flushing outflushing
• 3.3 Visual cleanliness visiblecleanliness
• 3.4 Clean work area cleanworkarea
• 5 Flushing of the pipeline in the hydraulic system
• 5.1 Influencing factors
• 5.2 System Design
• 5.3 Component cleanliness level
• 5.4 Preservatives
• 6.1 Preparation of piping during manufacturing
• 6.2 Surface treatment
• 6.3 Storage of pipes and joints
• 7 Hydraulic line installation
• 8 Flushing requirements
• 8.1 General
• 8.2 Clearing inner surface particles
• 8.2.2 Re and required flow (qV) can be calculated using equations (1) and (2).
• 8.3 Separation of filters and particles
• 8.3.1 General requirements
• 8.3.2 Auxiliary Flushing Filter
• 8.4 Minimum rinse time
• 8.4.2 The recommended minimum rinse time (t) can be calculated using equation (3).
• 9 Final cleanliness test
• 10 Description of the label (citing this standard)