1. Main structural features
1. Two-piece design
● Bolted connection of the valve body and valve cover (GB/T 5782 bolts)
● The valve seat can be replaced without removing the pipeline
● Service efficiency increased by 60% (compared with integrated type)
2. National Standard Flange
● Standard: GB/T 9113 (PN Series)
● Sealing Surface Type: RF (Raised Surface), FM (Concave Surface)
● Bolt hole: standard distribution GB/T 9124
3. Improved sealing system
● Double Piston Valve Seat (GB/T 26480)
● Fire Safety Design (GB/T 26480)
● Anti-Static Device (Resistance <10Ω)
2. Performance Benefits
1. National Standard Advantages
● 100% compliance with domestic production
● Fully compatible with GB piping
● High interchangeability of spare parts
2. Service Characteristics
● Online valve seat replacement (≤30 minutes)
● Standard tools can be used for disassembly and assembly
● Sealing components can be replaced separately
3. Reliability
● Maintenance-free period ≥ 5 years
● Fire test for 30 minutes without leakage
● Seismic performance conforms to GB/T 17742
3. Typical Applications
1. Petrochemicals
● Auxiliary piping for refinery plants
● Transportation of chemical materials
● LNG Auxiliary System
2. Municipal construction
● Main tap water network
● City Gas System
● Regional Heat Pipeline
3. Energy
● Power Plant Recycling Water System
● Desulfurization and denitrification device
● Boiler water supply control
Ball Valve Series
Butterfly Disc Valve Series
Slide Valve Series
Stainless Ball Valve Series
