Choice of Design

Model FVI FVM FVL FVD
Type PTFE Insert Metal Contact PTFE Lined irect
Wetted Parts PTFE / Glass CS/SS, Glass PTFE / Glass lass
Glass Tightening By ring nut and PTFE bush insert, Welded cage By PTFE gasket and bolted metal cage & flanges By bolted cage & PTFE lined flanges y CS backing flange & split cushion in PP / PTFE

Dimensions

in mm - (Sizes above 80 NB see note)

NB 15 20 25 40 50 65 80
Face to face -150 mm for all

Note (for sizes above 80 NB) : Due to constraints
of maximum available glass thickness though
Cylindrical Sight Glasses can be offered upto
200 NB,theyare not advisable beyond 80 NB,
since they are prone to breakage