Long stem ball valves, full bore

Solution for

  • opening and closing district heating and cooling lines (shut-off)
  • underground installation


  • in sizes from DN 25 to DN 700
  • with welded connections
  • with reduced bore design
  • in different standard stem heights – also customised stem heights
  • with different length extension pipes
  • with manual gear, electric or hydraulic actuator
  • unpainted
  • with separate air release (service) valves


  • fully welded construction
  • light weight
  • easy to insulate
  • space saving design
  • easy to install
  • easy to operate
  • maintenance-free
  • long service life
  • total bi-directional tightness = EN 12266-1 rate A in both directions
  • high Kv-value (minimum pressure loss, minimized pumping costs)
  • high-strength materials capable to withstand variable water qualities
  • stainless steel or stainless steel plated ball
  • trunnion mounted (sizes ≥ DN 600)
  • spring loaded PTFE ball seals
  • blow-out safe stem construction
  • stem sealing with double o-rings
  • designed and certified according to EN488:2015