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Butterfly Valves, KEYSTONEKeystone 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
- Certifications
- DVWG, PED
- End Connection
- Flanged, Lugged, Wafer
- Application
- Desalination, Water distribution, Chillers , Balance of Plant, Water Treatment
- Body Design
- Short Pattern
- Material
- Epdm Rubber, Duplex, Ductile Iron, Cast Iron, Carbon Steel, Buna-N, Bronze, 316L Stainless Steel, 316 Stainless Steel, 304 Stainless Steel, Aluminum Bronze
- Operating Temperature
- Less Than 200 C
- Pressure Class
- ASME, PN
- Process Connection Type
- 125FF, 150RF, PN16, PN25, 150FF
- Seat/Seal Type
- Resilient
- Shutoff Class
- Zero Leakage
- Valve Size
- NPS 6 / DN 150, NPS 4 / DN 100, NPS 3 / DN 80, NPS 24 / DN 600, NPS 2-1/2 / DN 65, NPS 20 / DN 500, NPS 2 / DN 50, NPS 18 / DN 450, NPS 16 / DN 400, NPS 14 / DN 350, NPS 12 / DN 300
- Valve Size Standard
- NPS, DN
- Valve Type
- Butterfly
- Media
- Air, Air, Inert Gas, Water
- Stem
- O-ring
Features
- 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
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