Si-110 EN0 pages

Datasheett
Ball segment valvet
Si-110 EN
Edition: 2012-07
Type KVTW/KVXWt
Wafer design
Type KVTF/KVXFt
Flanged design
Nominal pressurett
PN 25/20/16/10
Nominal sizett
DN 80 - 500
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
The SOMAS ball segment valve type KVTW with a centrically mounted shaft, and KVXW
with an eccentrically mounted shaft are of wafer design. Type KVTF is a flanged version
with centrically mounted shaft while KVXF is flanged and eccentric design.
The valve body is in one piece. Shaft device is also in one piece for torque trans­ ission
m
free of backlash. The spring-loaded seat is available in three alternative materials (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 for liquids, media
containing impurities etc. For dry and clean media choose KVX. In the KVX-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
seg­ ent is equipped with a network of bars that are used to split up the pressure drop
m
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.
•t KVM-ballwith
segment
V-groove for
high fibre
concentrations
•t LN Noise)
(Low
Ball segment
with low
noise trim
for high ∆P
Ball segment with V-groove is available for use at high fibre concentrations. The
V-groove design prevents dewatering at small opening angles.
The SOMAS valves are delivered ready for installation and operation. The valve assem­
blies are delivered factory tested as complete units with actuators, positioners and
accessories.