KONRAD Armatur type series RA

  • Type: combined butterfly/check valve (type RA)
  • Design: Industrial valve in double eccentric disc design
    welded design
  • Nominal size: DN 100 – DN 2000
  • Nominal pressure: Up to PN 63
  • Temperature range: -196 to +550 °C
  •  Flange connection: DIN, ANSI, BS, MSS, API, JIS etc.
    butterfly valves with butt weld ends (up to DN 800)
    Face-to-face length DIN EN 558-1 / ISO 5752 series 14 (F4) or to customer specification
  • Material: Structural steel 1.0038 (S235 JR)
    High-temperature pressure vessel steel 1.0425 (P265 GH/HII), 16 Mo3
    Stainless steel 1.4541, 1.4571, 1.4301, 1.4401, 1.4439
    Duplex 1.4462
    Super duplex 1.4501, 1.4410
    a.o.
  • Lining: Hard rubber, soft rubber, natural rubber, hard material coating
  • Disc seal: NBR (Perbunan®), PTFE, 1.4571 graphite or PTFE lamellas, stainless steel
  • Shaft seal: Stuffing box
    Double or safety stuffing box
    U-seal and O-ring NBR or FKM
    U-seal and pressure ring PTFE
    Double U-seal and O-ring made of NBR, FKM
    Double U-seal and pressure ring PTFE
  • Drive: Combined shut-off and check gear with hydraulic brake

KONRAD Armatur type series RA
Overview drawing and parts list

KONRAD Armatur type series RA
Exploded view