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 1600
- 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
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 1600 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
