Butterfly valves

Applications

  • District heating networks
  • District cooling networks

Available

  • as shut-off butterfly valve or control and shut-off butterfly valve
  • in sizes from DN 300 to DN 1400
  • with full bore or reduced bore
  • in pressure class PN25 (body)
  • in trim classes Δp=16 bar or Δp=25 bar
  • with tightness class A or B (EN12266-1)
  • for a temperature range of −40°C to 200°C (250°C)
  • with weld connections EN (DIN) together with GOST standards (recommended)
  • also with flanged connections
  • with manual gear, electric or hydraulic actuator

Characteristics

  • fully welded construction
  • manufactured using high quality materials and components
  • light weight, space saving design
  • easy-to-insulate
  • easy-to-install and operate
  • maintenance-free
  • metal seated
  • stainless steel flap + special alloy chrome plated seat

  • triple offset geometry
  • total tightness in both flow directions
  • non-jamming seat construction
  • seat design for large temperature ranges
  • high Kv value
  • designed according to EN488

Shut-off butterfly valves

Control and shut-off butterfly valves

Reference: Xingtai DH Company

Butterfly valve features

Optimal flow properties for all most demanding applications

  • flap and stem structure minimizes flow resistance and turbulence
  • strong two-piece stem structure maximizes flow capacity
  • full-bore structure in size classes DN 300–800
  • particularly high Kv value in DN 900 to 1400 reduced bore butterfly valves
  • high Kv value reduces pumping costs

All metal seat construction

  • metal seals extend the lifetime of the butterfly valve
  • suitable for many different applications and withstands varying water quality
  • total tightness in both flow directions
  • practically maintenance-free

Triple offset geometry design

  • minimizes the friction between the flap and seat ring during operation
  • prevents wear and ensures long service life of the valve