316 Ball Valve is a type of spherical valve primarily made of 316 stainless steel, widely used in industrial fields with high corrosion resistance requirements, such as chemical, food, pharmaceutical, and seawater treatment applications.
316 stainless steel is an enhanced version of 304 stainless steel, with the addition of 2%-3% molybdenum (Mo), which significantly improves its resistance to chloride corrosion. This makes it particularly suitable for environments like seawater, salt spray, or chemical solvents. Compared to 304 stainless steel, 316 offers superior corrosion resistance and better high-temperature strength.
Orde specification
Type: Ball Valve.
Standard: ASME B16.5.
Material: Body: ASTM A105N, Ball: SS 316, Stem: ASTM A479 Grade XM-19, Metal Seats, Tungsten Carbide Coated, Flexible Graphite Stem Seal Gasket.
Size: DN150.
Pressure Class: PN20.
Surface Treatment: Gray Painting.
Structure and Sealing
Ball Design: Features a metal ball with a circular channel, polished to a surface roughness of Ra ≤ 0.4 μm, ensuring smooth sealing surfaces and reduced fluid resistance.
Sealing Assembly: Utilizes PTFE (Polytetrafluoroethylene) or metal hard seals, achieving ANSI Class VI leakage rating, with sealing performance improving as medium pressure increases.
Special Structures:
Floating Ball Valve: The ball presses against the outlet seal under pressure, suitable for medium/low-pressure applications.
Fixed Ball Valve: Equipped with bearing support for low torque, ideal for high-pressure systems.
Temperature and Pressure Resistance
Temperature Range: Operates in extreme conditions, from -196°C (LNG cryogenic systems) to 650°C (high-temperature steam systems).
Pressure Rating: Handles 1.6–50 MPa (150LB–3000LB standard classes), suitable for high-pressure pipelines.
Actuation Methods
Supports manual, pneumatic (response time 0.5–2s), and electric (IP67-rated) drives, meeting automation control requirements.
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