Main standards API 6D/ISO 14313
Applied Standards: API 6D, ISO 14313, ASME VIII, ASME B16.34, ASME B16.10, ASME B16.5, NACE MR0175 and other industry standards
Size range: Class 150: 2"-60", Class 300: 2"-48", Class 600: 2"-36"
Grade 900: 2"-24", Grade 1500: 2"-20", Grade 2500: 2"-12".
Special testing: EN 10204 Category 3.2 Material Certification (certified by thirty components), API 641 Fugitive Emissions, PMI, NDE testing.
1. The design of the valve body adopts the design method of a pressure vessel. The products are modeled by three-dimensional software before manufacturing. The simulation analysis of stress, temperature, and fluid is carried out on the model to ensure that the performance and quality of the products meet the requirements of customers. A large submerged arc welding machine automatically welds the weld seams of the valve body to ensure the welding quality of the ring weld. The structure of the valve body can be barrel or ball type according to the customer's requirement.
2. the sealing structure of the valve seat can be designed as a soft seal (polymer or rubber seal), hard seal, and combined seal structure according to the customer's requirement; the valve seat can be designed as DBB (double cut-off and drain) or DIB (double isolation and drain) structure to meet the needs of different functions.
3. the surface hardening of the ball can be nitriding, chemical nickel plating (ENP), surfacing cemented carbide, supersonic spray carbide, or spray welded nickel-based alloys and other technologies.
4. the end of the seat has a spring-loaded pre-tensioning structure, the spring is made of high-strength corrosion-resistant Inconel X-750 material, which still maintains good elasticity in extremely harsh environments, and can make the seat seals and the ball always maintain good contact.
5. The use of self-lubricating bearings effectively reduces the friction torque during the opening and closing of the valve stem.
6. The fully welded ball valves designed by GNEE Group have the functions of fire protection, anti-static, and stem fly-out prevention at the same time.
7. when the valve is used in direct burial, valve wells, and other underground piping systems, according to the different needs of customers on the valve operating platform interface heightened processing.
