For the structure of the triple-eccentricity seal bufferfly valve, when the valve is under the complete open state, its bufferfly plate sealing face will break away from the valve seat sealing face completely; when it is opened from 0 to 90°, the bufferfly plate sealing face will break away from the valve seat sealing face upon opening; when it is closed from 90° to 0°, and only upon closing, the bufferfly plate sealing face can contact and press onto the valve seat sealing face tightly.
Technical Specifications
Design standard: API 609、GB/T 12238、ISO 5752
Face to face standard: ASME B16.10、GB/T 12221
Flange ends: ASME B16.5、ASME B16.47、GB/T 9113
Fire safe design:API 6FA 、API 607
Pressure test:API 598、GB/T 13927
Product Specifications
Body material: carbon steel, stainless steel, alloy steel
Nominal diameter: 2"～180"（DN50~DN4500）
Pressure range:Class150～600（PN10~PN100）
Working temperature:-196℃～+200℃
Operation : wrench, worm gear, electric,etc.
Design Features
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Application
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Small installation space, light weight, and maintenance friendly;
Good sealing effect and long service life;
Simple structure and small opening/closing torque;
Good flow adjusting ability, high precision of flow characteristic curve and good dynamic adjustment stability;
Leakage rate: ANSI B 16.104 Ⅵ;
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Range of application: water system, electricity, petroleum, chemical industry, papermaking, metallurgy, aerospace and other industries
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