BW25 Valvola a farfalla wafer  pn 10/16





Butterfly shut-off valve with centered disc with Wafer type body and cast iron lens, EPDM elastomer seal, operating pressure PN 10/16, gauge in accordance with EN 558, made in accordance with the relevant product standards and the system EN ISO 9001 quality management system. Anti-corrosion coating using FBE (Fusion Bonded Epoxy) epoxy powder, RAL 5017 blue color, minimum thickness 250 μm.
Wafer butterfly valves are suitable for in-line installation between two flanges (or at the end of the line with counterflange), centering is obtained by means of slots on the valve body.

Use Case

Heating systems, warm water up to 110 ° C. Air conditioning systems (HVAC). Water treatment and distribution systems, waste water, industrial, agricultural, fire prevention applications. They are not suitable for liquids containing mineral oils, hydrocarbons, steam and liquids that exert an aggressive action on the EPDM seal coating. Other liquids and larger diameters on request.
They are suitable for capacity control and flow regulation.
(Without prejudice to the correct choice of the item based on the application) They are suitable: for use in line and at the end of the line, and for service that requires frequent operations; the integrated support according to ISO 5211 allows easy mounting of a wide range of servos.

Also available in versions:
● with padlockable lever in open/closed position
● with lever and limit switch
● with lever and position indicators (Limit Switch Box)
● with manual gearbox
● with manual gearbox and position indicators (Limit Switch Box)
● with electric actuator
● with pneumatic actuator (single and double acting)

BW25 Disegno tecnico valvola a farfalla wafer pn 10 / 16


Working pressure: PN 10 / PN 16
Working temperature: -10°C / +110°C
Project standard: EN 593, EN 1074-1, EN 1074-2
Gauge: EN 558
Flanges: EN 1092-2
Upper flange: ISO 5211
Testing: EN 12266-1
Coating: RAL 5017 epoxy powder, thickness 200-250 μm


( 1 ) Body: GGG 40 spheroidal cast iron
( 2 ) Disc: GGG 40 spheroidal cast iron
( 3 ) Seal: EPDM rubber
( 4 ) Shaft: AISI 416 stainless steel
( 5 ) Plug: AISI 316 stainless steel
( 6 ) Bushing: Fiberglass + PTFE
( 7 ) O-Ring: NBR
( 8 ) Lever: Carbon steel / Aluminum

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