CVI B220 TYPE

TRUNNION MOUNTED BALL VALVE

Content Specification
General design standard API6D
Pressure-temperature rating ASME B16.34
Face to face dimensions ASME B16.10
End Flange ASME B16.5
ANSI B16.47
Butt-welded end ASME B16.25
Inspection and test API6D/API598

DESIGN FEATURE

UP STREAM SEALING TWO-WAY VALVE

CVI trunnion mounted ball valve has two
seats on both side. Each seat has springs
loaded and make seat insert contact the
ball surface for sealing. So the valve is bidirectional
sealing, and no limitation for
installation.

FIRE-SAFE DESIGN API607/API6FA

When the seat inserts are softened and burnt in case
of the fire or unusual temperature increase, the seat
retainer, under the duty of the spring, will touch with
the ball and form a metal-to-metal contact, which can
prevent internal leak. Meanwhile, the middle flange
and the upper part and lower part of the stem will form
a metal-to-metal contact which can prevent external
leak and conform to API6FA or API607.

 

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