BU6.. Series Butterfly Valves, Wafer or Lug Pattern

Flow medium                          Nylon coated disc: Cold and hot water

                                              SS304 disc: cold and hot water. Max. 50% Glycol

Temperature of medium          Nylon-coated disc: 0...+95°C SS304 disc: -20...+100°C

Nominal pressure                    1600kPa (PN16)

Flow characteristic                  Modified equal-percentage Rangeability                            10:1 (for 30°... 70° range)

Leakage rate                           Rate A Bubble Tight (ISO 5208)

Pipe connections                    ISO 7005.2,AS2129

                                             PN10/16, Table E for wafer (DN50..300)

                                             PN16 for wafer (DN350...500)

                                             PN16 for lug (DN50...500) Max.

Close-off pressure                   1200kPa

Installation position                 Vertical 

Valve Material

Body                                        Ductile cast iron GGG40 (DN50...500)

Disc                                         Nylon coated ductile cast iron disc / Stainless steel 304 disc

Seat                                        EPDM

Shaft                                       Stainless steel 416

Bushing                                   RPTFE