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butterfly valve

Double offset butterfly valve




1. FEATURES

The center of rotation is moved form the centerline of the valve body.

The seat and seal design remains conical and on the center.

This design again relies on a frictional, interference seal. but the length
of rotaion over which this friction occurs is reduced, allowing a larger
range of process resistant seat materials to be used.

However these materials must be relatively soft or highly elastic to
prevent jamming.


2. DESCRIPTION
SIZE RANGE : 3" TO 120"
TEMP. RANGE : -100 DEG. C TO OVER 800 DEG. C.
FLANGE RATING : ANSI CLASS 150 TO ANSI CLASS 2500
FLANGE DRILLING : ANSI, MSS, API, JIS, DIN, BS
FACE TO FACE : ISO 5752, ANSI B16.10, DIN 3202
END CONNECTION : WELDING, WAFER, LUG, FLANGED TYPE


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