Ball Welded Ball Valve

1. Main Structure and Specifications
(1) Spherical valve body design
Geometric Structure Optimization: The valve body has a spherical or nearly spherical profile. Compared with the traditional rectangular valve body, the stress distribution is more uniform and the pressure bearing capacity is increased by more than 30%

Flow channel optimization: Full diameter design (RF standard), the flow resistance coefficient is only 0.05, which is close to the level of a straight pipe

(2) Complete Welding Process
Submerged Arc Welding (SAW): The main weld seam of the valve body adopts multi-pass submerged arc welding, and 100% radiographic inspection (RT) is detectable

No external leakage design: completely eliminates the risk of flange connection leakage, suitable for direct burial/high-risk environments Quality working conditions

(3) Improved Ball System
Three-body ball core design: consists of a shaft ball with double support, the torque is 40% lower than the traditional design

Surface Treatment:

HVOF tungsten carbide coating, hardness up to HRC75

Mirror polishing (Ra≤0.2μm), sealing surface contact area>90%

(4) Intelligent Drive Configuration
Optional:

Electric actuator (IP68 rating)

Emergency shutdown of gas-liquid coupling (ESD response time <2 seconds)

IoT Module (Real-Time Valve Position/Torque Monitoring)

2. Typical Application Scenarios

(1) Energy
Natural Gas Main Pipeline (Corresponds to X80 Steel Pipeline)
LNG receiving station in ultra-low temperature conditions (-162°C)
High-pressure alcohol injection system for shale gas production
(2) Chemical industry
PTA Unit Heat Transfer Fluid Valve (350°C/6.4MPa)
Ethylene cracking unit quenching system
(3) Urban infrastructure
Regional heating main (hot water PN25/150°C)
Nuclear Power Plant Cooling Water System (Nuclear Category Certification)

3. Technological breakthrough

Anti-sulfur design:

The valve body is made of ASTM A352 LCC low temperature steel

Coating of the sealing surface with Inconel 625 alloy (NACE MR0175 certified)

Fire safety:

Complies with API 607/ISO 10497 standards

Remains leak-proof for 30 minutes after fire

Intelligent Diagnostics:

Built-in stress sensor (monitors the fatigue condition of weldments)

Digital twin system (predictive maintenance)