A fully welded ball valve is a type of ball valve with a full-welded structure, where all components are connected by welding without threads or flange connections. It features reliable sealing and is capable of withstanding high temperatures and pressures.

Structural Features

‌Full-welded design: Key components such as the valve body, valve seat, and ball core are welded together, eliminating the risk of external leakage.‌

‌Sealed Structure: Utilizes PTFE sealing rings and spring design, accommodating pressure and temperature fluctuations without leakage under nominal pressure and temperature conditions.‌

‌Material Selection: Valve bodies are available in materials such as WCB, stainless steel (e.g., 304, 316), suitable for various operating conditions.‌

Technical Specifications

Nominal Pipe Size: DN10-DN300 (common sizes), DN1500.

‌Temperature Range: -38℃ to 380℃ (common range), some models support higher temperatures (up to 550℃).‌

‌Operating Pressure: 1.6 MPa - 6.4 MPa.‌

Drive Type

Supports manual, pneumatic, and electric drives, catering to automation control requirements.

Application Scenario

Broadly used in the oil, chemical, power, environmental protection, and water conservancy industries, especially suitable for high-temperature, high-pressure, and corrosive medium environments.