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Keystone Model ParaSeal Butterfly Valves

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

FOOD & BEVERAGE Keystone NUCLEAR POWER PULP & PAPER REFINERY SLURRY WATER & SEVAGE

Any questions?

Fredrik Ekeroth
Solution Seller
Phone. +46 54-57 92 06

Fredrik Malmström
Solution Seller
Phone. +46 40-33 02 33

Johan Riedenlow
Account Manager
Phone. +46 40-33 02 30

Anders Praem
Inside Sales Engineer
Phone. +45 2137 7759

Kenn Gerwien
Account Manager
Phone. +45 2346 5513

Slawka Pedersen
Inside Sales Manager
Phone. +45 2137 7702

Henna Ketoja
Inside Sales Engineer
Mob. +358 400 612 124

Tommi Penttilä
Sales Manager Conventional Power
Phone. +358 207 416 208
Mob. +358 40 512 2308

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

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