Ball valves

Ball valves– for gases and fluids

Leakage of gas and/or fluids is something that needs to be avoided at all cost. SOMAS ball valve is designed to take care of this. The valve is a full bore, flanged ball valve with cylindrical bore made in dimensions from DN25 to DN500.


SOMAS ball valves have a homogeneous ball with a cylindrical bore. This cylindrical bore contributes to the low pipe resistance, and is beneficial in applications of abrasive media. The ball valve as valve type is used in a wide range of applications. The valve is made from stainless steel with spring loaded seats for good tightness, even at low differential pressure.

The ball valve is hard chromed as standard, but can also be supplied with Hi-Co coating. The valve can be supplied with actuator and accessories for manual operation, on/off or control applications.

3-piece ball valve

SOMAS 3-piece full-bore ball valves are mainly intended for use as manually operated valves or remotely actuated on/off valves. The ball valve meets ISO standards.
The valve is available with threaded ends, welding ends or flanges. It is also possible to combine different types of ends.

SOMAS 3-piece full-bore ball valves are equipped with seats of two materials. Fiberglass-reinforced PTFE as standard, or carbon-filled PTFE adapted for steam.

Product information

SOMAS offers two different types of ball valves. SKV and the full bored 3-piece. Below are some key differences between the two:


  • Dimensions DN25 – DN500
  • Pressure classes PN10 – 25 (DN80 – 400) PN10 – 50 (DN25 – 50)
  • Full cylindrical bore for maximum capacity
  • Hard chrome plated ball as standard. HiCo-coated ball also available as an option
  • Seats made out of PTFE 53 or HiCo (High Cobolt alloy)
  • Spring loaded seats for good tightness at low differential pressure
  • Complete range of actuators and accessories for manual operation, on/off or control applications
  • Good tightness up to class V for metal seats and class VI for soft-seal seats.


  • Dimensions DN15 – DN100
  • Pressure class: PN40, PN63
  • Full cylindrical bore for maximum capacity
  • Two alternative seat materials: fiberglass reinforced PTFE or carbon filled PTFE
  • Three alternative pipe connections. Threaded, weld ends or flanged

Ball valves– truly versatile

Ball valves are used in many different fields and in a variety of applications. Its full-bore design makes pipe resistance small, which in turn results in small energy loss. The valve can be equipped with a gear for local operation or pneumatic actuators for remote control.

The ball valve has two seats and is therefore tight in both flow directions. The spring-seat design gives a good tightness even at low differential pressures.


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