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Keystone OptiSeal Butterfly Valve

Keystone™ OptiSeal is a resilient seated butterfly valve for general purpose, food and beverage processing, industrial applications and chemical applications when configured with a PTFE lined seat, disc and stem.

JALOSTAMO KEMIA & PETROKEMIA Keystone LIETE PULP & PAPER RUOKA & JUOMA TUOTTEET YDINVOIMALOIHIN

Any questions?

Henna Ketoja
Inside Sales Engineer
Mob. 400 612 124

Henna.Ketoja@askalon.fi

Tommi Penttilä
Sales Manager Conventional Power
Phone. 0207 416 208

Tommi.Penttila@askalon.fi

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Ominaisuudet
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Certifications	CUTR, SIL capable, PED
End Connection	Wafer, Lugged
Application	Winemaking, Beverages, Automotive, Air Circulation
Material	Super Duplex, Hastelloy, Epdm Rubber, Duplex, Cast Iron, Carbon Steel, Buna-N, 316L Stainless Steel, 316 Stainless Steel
Operating Temperature	Up to 250 F (120 C)
Pressure Class	PN
Process Connection Type	PN16
Seat/Seal Type	Resilient
Shutoff Class	Zero Leakage
Valve Size	NPS 20 / DN 500, NPS 10 / DN 250, NPS 8 / DN 200, NPS 6 / DN 150, NPS 4 / DN 100, NPS 3 / DN 80, NPS 24 / DN 600, NPS 2-1/2 / DN 65, NPS 18 / DN 450, NPS 16 / DN 400, NPS 14 / DN 350, NPS 1-1/2 / DN 40
Valve Size Standard	DN
Valve Type	Butterfly
Media	Liquids, Water, Hot Water, Liquid, Air
Stem	O-ring

Top bushing absorbs actuator side thrust loads.
Actuator flange acc. ISO 5211.
High solid, glossy, silicone free, paint system ensuring excellent corrosion resistance.
Extended body neck allows pipe insulation.
Body locating holes ease installation and centering between the flanges.
Rounded polished disc edge gives full concentric sealing, lower torques, longer seat life and bubble-tight shut-off.
The seat is field replaceable and fully isolates the body and stem from the flow.
Primary stem sealing exceeds the pressure rating of the valve and prevents leakage through shaft area to atmosphere.
A secondary shaft sealing provides back‑up safety.
No flange gaskets required.
High Cv value.
Top and bottom shaft bearings for optimized support and minimum friction in all body materials up to DN 300, except cast iron.

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Keystone OptiSeal Butterfly Valve

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