Combination air valve with rapid filling prevention mechanism fig. FOX 3F-RFP

The air valve ensures that air pockets are vented under working pressure, that large air flows are admitted during draining, and that air is discharged at a controlled speed while the pipe is being filled, so as to avoid water hammer.

Features

• GJS 450-10 ductile iron body and cover.

• Stainless steel venting sub-assembly.

• Stainless steel seat.

• Solid polypropylene float.

• Rapid filling prevention mechanism.

• RAL 5005 blue epoxy coating applied by fluidised bed technology.

Working conditions

• Pressure: 10-16-25-40 bar.

• Minimum pressure 0.2 bar.

• Clean water up to 60°C, higher values on request.

Connections

• Flanges from DN 50 to DN 300 mm.

• Flanges to EN 1092/2, ANSI 150, AS; others on request.

• 1″ – 2″ BSP F threads; NPT on request.

Standard

• Designed and tested to EN 1074, AWWA C-512, AS 4956, AS 4020, WRAS.