Si-1120 pages

Datasheett
Ball segment valvet

Si-112 EN
Edition: 2014-01

Type KVTF-C/KVXF-Ct
Flanged design Short face to face
t
Nominal pressurett
PN 25 / ASME Class 150
t
Nominal sizett
DN 80 - 400 / NPS 3” - 16”
tMaterialttStainless steel

and
•t Control-valve
shut-off
•t High capacity
•t One-piece shaft
gives a torque
transmission free
of backlash

•t Excellent tightness
irrespective of
differential pressure

•t Easy maintenance
Option

•t

KVMF-ball
segment with
V-groove for
high fibre
concentrations

•t LN Noise)
(Low
Ball segment
with low
noise trim
for high ∆P

The SOMAS KVTF-C is a flanged ball segment valve with centrically mounted shaft and
KVXF-C is a flanged ball segment valve with eccentrically mounted shaft.
The valve body is in one piece.
Face to face dimensions in accordance with EN558:2008-series 36 and ISA 75.04S.
Shaft piece is also in one piece for backlash free torque transmission.
The spring loaded seat is available in three different materials (PTFE, PTFE 53 and
HiCo).
The valves can be used for control, as well as for shut-off applications on practically
every type of media within a wide temperature range. Choose KVTF-C for liquids, media
containing impurities etc. For dry and clean media choose KVXF-C. In the KVXF-C
valve the ball segment is eccentrically mounted and rotates out from the seat when the
valve is opened. This reduces the wear on seat and segment.
Low noise trim is available as an option. The designation “LN” indicates that the ball
segment is equipped with a network of bars that are used to split up the pressure drop
across the valve. This results in less pressure recovery, thereby reducing the noise and
potential damage due to cavitation.
Note! Capacity factors will be reduced for valves with LN-trim.
Ball segment with V-groove is available for use at high fiber concentrations. The
V-groove design prevents dewatering at small opening angles.
The SOMAS valves are delivered ready for installation and operation. The valve
assemblies are delivered factory tested as complete units with actuators, positioners and
accessories.