HögforsValves  

  PRODUCTS TABLE  
  BLUE LINE  
  Butterfly valves  
  • 31100 series  
  • 31300 series  
  • 31500 series  
  Ball valves  
  • 34000  
  • 34100  
  • 34200  
  • 34300  
  • 34500  
  • 36000  
  • 38000  
  Strainers  
  • 38500  
  SILVER LINE  
  Butterfly valves  
  • 411 series  
  Ball valves  
  • 440  
  • 442  
  • 443  
  • 445  
  • 450  
  Ball sector valves  
  • 455  
  • 465  

31300 series

31300CS Butterfly valve with weld ends of carbon steel
PN 25, DN 200 - 1400

The butterfly valve 31300CS with DIN or GOST (option) weld ends is specially designed for district heating.
It can be used as an on-off or control valve.

Högfors butterfly valve is tight in both flow directions.

Nominal pressure
25 bar

Closing pressure difference
max 16 bar or 25 bar (option)

Tightness class
ISO 5208, EN 12266-1, RATE B

Temperature
max/min +260°C/-40°C (DN200 - 1000)
max/min +260°C/-20°C (DN1200 - 1400)


The max pressure difference depends on the working temperature.

Design
The body of the butterfly valve with weld ends is carbon steel. The double eccentric disc and shafts are made of stainless steel. Replaceable seat ring is also stainless steel. The shaft packing box is a combination of graphite rings and O-rings which are possible to tighten and are also replaceable.
The butterfly valve is delivered with a bare shaft or with an actuator.
You can choose either bare shaft, manual gear, electrical, pneumatic or hydraulic actuator.

Nominal sizes
DN 200 - 1400

Conform with the requirements of the Council Directive 97/23/EC on Pressure Equipement, marking: CE 0575 Class: Gas, group 1 

More detailed information see Product card

Högfors Oy • Tel. +358 (0)2 727 7200
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