Si-1010 pages

Datasheett
Ball segment valvet

Si-101 EN
Edition: 2012-07

Type KVT/KVXt
Wafer design
Type KVTF/KVXFt
Flanged design
t
Nominal pressurett
PN 50
t
Nominal sizett
DN 25/2 - 65
tMaterialttStainless steel
ttt
High nickel alloy (HiNi)
and
•t Control-valve
shut-off
•t High capacity
•t Ball segment and
shaft made in one
piece, gives a torque
transmission free of
backlash

•t Excellent tightness
irrespective of
differential pressure

Option

•t KVM-ball
segment
with V-groove
for high fibre
concentrations

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

The SOMAS ball segment valve type KVT with a centrically mounted shaft, and KVX
with an eccentrically mounted shaft are of wafer design. Type KVTF is a flanged version
with centrically mounted shaft while KVXF is a flanged and eccentric design.
The valves in this data sheet are of top entry design. Short face to face dimension, low
weight and small space requirement make the installation of the these valves very easy.
One-piece ball segment and shaft design gives backlash-free operation and accurate
control. The shaft is guided in the valve body and stuffing box sleeve. The spring loaded
seat is available in PTFE, PTFE 53 and HiCo.
The valves can be used for control, as well as for shut-off applications on practi­ ally
c
every type of media within a wide temperature range. Choose KVT/KVTF for liquids,
media containing impurities etc. For dry and clean media choose KVX/KVXF. In the
KVX/KVXF 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 (LN) trim is available as an option. The designation “LN” indicates that the
ball seg­ ent is equipped with a network of bars that are used to split up the pressure
m
drop across the valve. This results in less pressure recovery, thereby reducing the noise
and potential damage due to cavitation. In addition the “LN” trim can tolerate media
containing a small amount of fibers or particles.
Ball segment with V-groove is available for use at high fibre concentrations. The
V-groove design prevents de-watering at small opening angles.
SOMAS valves are delivered ready for installation and operation. The valve assem­ lies
b
are delivered factory tested as complete units with actuators, positioners and
accessories.