1. Standard design features
1. Flange Connection System
● Flange Standard: GB/T 9113 (PN Series), GB/T 9115 (Class Series)
● Sealing surface type: RF (protrusion), FM (concave surface), M (tenon and groove)
● Bolt hole center circumference diameter: GB/T 9124 standard
2. Valve body design
● Structural length: GB/T 12221 regulation
● Wall Thickness Grade: GB/T 12224 Standard
● Pressure-Temperature Rating: GB/T 12224 Annex A
3. Drive interface
● Drive Device Mounting Flange: GB/T 12223 Standard
● Flywheel Size: GB/T 12222 Regulation
2. Main advantages
1. Advantages of standardization
● 100% domestic design
● Full compatibility with domestic pipeline systems
● High interchangeability of spare parts
2. Performance Characteristics
● Flow resistance coefficient ≤ 0.07
● Sealing Class: GB/T 13927 Grade A
● 15% lower opening and closing torque than ISO standard
3. Cost-effective
● Cost-effectiveness is higher than international standard products
● Maintenance cost reduced by 30%
● Delivery cycle reduced by 50%
3. Typical Applications
1. Petrochemicals
● Refinery Equipment
● Transportation of chemical materials
● LNG Auxiliary System
2. Municipal construction
● Tap water supply network
● City Gas System
● Heat pipe
3. Industrial System
● Power Plant Recycling Water Supply System
● Metallurgy Equipment
● Food & Beverage Production Line
Ball Valve Series
Butterfly Disc Valve Series
Slide Valve Series
Stainless Ball Valve Series
