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NDV Double eccentric (KM200 type, C200R type) Butterfly Valves

Made in Japan

Manufacturer: NIPPON DAIYA VALUE Co., Ltd.

Model: Double eccentric (KM200 type, C200R type)

A butterfly valve controls fluid by rotating a disc in a short cylindrical body.

Center disc type (C500 type) and double eccentric type (KM200 type and C200R type) are available.

Features

①Excellent operability

Excellent operability and visibility due that the valve can be fully opened and closed easily with 90-degree rotation.

②Space-saving and compact design

Light weight and short face-to-face dimension compared with other type of valves. It can be manufactured from small bore to large bore.
Compared size and light weight with shorter face-to-face and is lightweight and compact.

③Superior in flow control

Flow characteristics close to equal percentages and 20 to 30 : 1 rangeability make its excellent flow control available.

④Actuators are selectable by the operating conditions

By mounting actuator and connectors, it is easy to automatize.
Lever, gear, pneumatic and electric operated are applicable.

⑤Compatible with a wide range of fluid conditions

A lineup of reinforced PTFE seats, rubber seats, and metal seats is available for a wide range of applications. Butterfly valves for pharmaceutical plants are also available.

Specifications

The center line of the stem of the disc is offset from the center of the seat ring and also offset from the centerline of the piping.
Therefore, when the valve is opened or closed, the disc separates from the seat ring at a slight rotation angle due to the cam action caused by eccentricity, thus reducing wear on the sealing surfaces.
The double eccentric type is superior in valve seat seal ability, and in addition more choice of the materials such as rubber and resin seats, metal seats are available.
Our high-performance butterfly valves made of stainless steel or cast iron use this structure.

Double eccentric type

Double eccentric type

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