Butterfly valve
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Triple-eccentricity Bufferfly Valve

Product Description:

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

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;


Range of application: water system, electricity, petroleum, chemical industry, papermaking, metallurgy, aerospace and other industries 

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