Double Flanged Eccentric Butterfly Valve

Standard: EN593/ ISO 5752 /BS5155/AWWA C504

Flange drilling is according to DIN 2501, BS4504, ANSI B16.1

Working pressure: 10bar/16bar/25bar

Testing pressure:

Shell: 15bar/24bar/37.5bar

Seal: 11bar/17.6bar/27.5bar

Type: Double Flange Eccentric, Double Flange Concentric

Material:

Body: DI/CI /Carbon Steel/Stainless Steel

Disc: DI/Stainless steel 304/316,AL-Bronze

Shaft: Stainless steel410/416/420 , Seat :EPDM/NBR

Coating: Internal and external with fusion bonded epoxy coating min250μm

Double flange eccentric butterfly valves are widely used in industrial and civilian fields due to their unique design and excellent performance.

Its core advantages stem from three major eccentric structures: the axis of the valve stem deviates from the center of the butterfly plate and the pipeline, the sealing surface has a conical eccentricity, and the center of rotation of the butterfly plate deviates from the centerline of the flow channel. This causes the butterfly plate to detach from the valve seat before moving when the valve is opened and closed, reducing friction, lowering operating torque, and extending service life.

In terms of performance, the valve has efficient sealing, and the eccentric design creates a large and uniform sealing pressure ratio when the butterfly plate and valve seat are closed, making it suitable for high-pressure, high sealing requirements scenarios such as gas and chemical industries; The low torque characteristic can be adapted to low-power drive devices, saving costs and energy consumption; The combination of minimal wear and high-quality materials ensures stable performance during frequent opening and closing, significantly reducing maintenance costs. At the same time, it can adapt to various working conditions such as water, steam, corrosive media, etc., with a working temperature of around -40 ℃ -450 ℃ and a wide pressure range.

In terms of application, it is used for precise flow control and leak prevention in water supply and drainage engineering; Ensuring the safe transportation of raw materials and products in the petrochemical industry; Regulating cooling water and steam in the power industry; The heating system controls the flow of hot water to reduce heat loss.

With efficient and reliable fluid control capabilities, double flange eccentric butterfly valves have become an important component of pipeline systems.