Keystone Model ParaSeal Butterfly Valves

The ParaSeal range features a proven disc, shaft and seat arrangement designed for use in high pressure and high velocity applications

Caratteristiche principali

Available in wafer, lugged and double flanged
One piece body design acc. ISO 5752 series 20 (DIN 3202 K1)
Suitable for severe vacuum and up to 25 bar bubble tight shut off
The field replaceable seat fully isolates the body and shaft from the media
Bed grooved seat construction for tight shut off at full rated pressure, also for end of line service
Suitable for Bördel and slip-on flanges
A molded-in O-ring in the seat face for flange sealing. No flange gaskets required
Lenticular shaped disc to improve flow capacity
Splined, squared or key shaped disc/shaft connection
Dry shaft design
PTFE lined bearings to minimize friction
Actuator flange acc. ISO 5211