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Uni-directional Butterfly Valve

Triple Eccentric Butterfly Valve

Product Description: Butterfly valve, triple eccentric, three offset, metal laminate seat, uni-directional, bare stem, wafer

Product Name:Triple Eccentric Butterfly Valve
Nominal Diameter: 32 Inch, DN800
Nominal Class: Class 150 LB, PN16
Design Standard: GOST Standard
Body Material: ASTM A216 WCB
Disc Material: ASTM A216 WCB
End Connection: Wafer
Metal Seat: SS 304+Graphite
Face to Face: ISO 5752
Flange End: GOST 12815
Mode of Operation: Bare Stem
Test and Inspection: EN 12266

The three-eccentric laminate hard seal flange butterfly valve is a long-lasting, energy-efficient valve designed with a three-dimensional core principle. It features a laminate stainless steel and graphite valve seat that combines hard and soft sealing for enhanced performance. The valve comprises essential components including the valve body, butterfly disc, laminate seal, valve stem, and transmission mechanism. Its advanced design and technology make it suitable for a wide range of applications, including metallurgy, power generation, petroleum, chemicals, air, gas, combustible gases, and water supply and drainage pipelines.

Triple Eccentric Butterfly Valve – Three Distinct Eccentricities

The triple eccentric butterfly valve is characterized by three distinct eccentricities:

First Eccentricity: The shaft is offset from the centerline of the sealing face.
Second Eccentricity: The shaft is offset from the centerline of the pipe and valve.
Third Eccentricity: There is a notable included angle between the oblique taper of the eccentric seat and the centerline of the pipe.

This design ensures that the seat is completely disengaged from the sealing ring throughout the entire opening and closing process. The triple eccentric structure not only leverages the cam effect but also effectively prevents abrasion and leakage.


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