Butterfly valves: VSS0 pages
Datasheett
Butterfly valvet
Si-203 EN
Edition: 2013-04
Type VSSt
Wafer design
t
Nominal pressurett
PN 10 - 25
t
Nominal sizett
DN 80 - 1200
t
Materialtt
Stainless steel
triple
•t Advanceddesign
eccentric
•t Designed for control
and shut-off
applications
•t Designed forup to
applications
350° C (662 °F)
•t Tightness class inEN
accordance with
60534-4 Class V as
standard
made
•t Solid seatsteel of
stainless
•t Wafer design
(Mounted between
flanges) alt. lugged
design
Option
•t PTFE-seat
•t High temperature
applications up to
550° C (1022 °F)
SOMAS butterfly valves, type VSS is used as a control, on/off and shut-off valve. The
VSS valve is designed to handle a wide range of liquids, gases and steam within a broad
temperature range.
The valves have an advanced triple eccentric design including a unique shape of the disc
allows the use of a solid stainless steel seat. The solid seat remains unaffected by high
flow velocities and temperatures. A good valve function is achieved even on difficult
applications.
The seat is replaceable in alternative materials.
The VSS valve can be mounted between flanges and is also supplied in lugged design.
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.