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80-03 type valve plate
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- Product Description
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Material Advantages
Corrosion Resistance: The passivation film formed on the surface of stainless steel resists erosion from acids, alkalis, salts, and humid environments, extending valve life.
High/Low Temperature Resistance: Certain grades (such as 310S, 347) can operate stably within -200℃~1200℃, adapting to extreme temperature conditions.
Strength and Toughness: Possesses both metallic strength and processing plasticity, capable of withstanding high-pressure fluid impact.
Hygiene: Smooth surface, not prone to bacterial growth, compliant with food-grade (e.g., 304L, 316L) and medical-grade standards.
Structure
Slab type: Common in gate valves, opened and closed by sliding perpendicular to the fluid direction, with sealing surfaces mostly flat or wedge-shaped.
Disc type: Common in butterfly valves, controls flow by rotating around a central axis (0°~90°), with a sealing ring (e.g., rubber, metal) on the valve plate edge.
Swing type: Common in check valves, the valve plate swings around a fixed axis, automatically opening with fluid pressure to prevent backflow.
Key Design Parameters
Sealing surface form: Flat face (FF), raised face (RF), ring joint face (RJ), etc., affecting sealing performance and leakage rate.
Flow passage diameter: Matches the valve's nominal diameter (DN), determining the fluid flow capacity.
Actuation method: Manual, electric, pneumatic, hydraulic, etc., the valve plate structure must be adapted to different actuators (e.g., valve stem, gearbox).
Application Scenarios
Chemical industry: For conveying corrosive media (e.g., sulfuric acid, hydrochloric acid), 316L or duplex stainless steel valve plates are selected to prevent corrosive leakage.
Food and pharmaceutical: Using 316L stainless steel valve plates, meeting GMP standards, for sterile fluid control (e.g., pharmaceutical equipment, beverage production lines).
Oil and natural gas: In high-pressure, high-temperature environments, martensitic stainless steel (e.g., 420) or special stainless steel valve plates are used to withstand oil and gas erosion and sulfide corrosion.
Water treatment and environmental protection: 304 stainless steel valve plates are used in tap water pipelines and sewage treatment equipment, resisting chloride ion corrosion.
Energy and power: High-temperature resistant stainless steel (e.g., 321H) is used in power plant boiler valves to withstand high-temperature steam impact.
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