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Keystone Optiseal Resilient Seated Butterfly Valve

The 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.

Details

Features

1.Top bushing absorbs actuator side thrust loads.

2.Actuator flange acc. ISO 5211.

3.High solid, glossy, silicone free, paint system ensuring excellent corrosion resistance.

4.Extended body neck allows pipe insulation.

5.Body locating holes ease installation and centering between the flanges.

6.Rounded polished disc edge gives full concentric sealing, lower torques, longer seat life and bubble-tight shut-off.

7.The seat is field replaceable and fully isolates the body and stem from the flow.

8.Primary stem sealing exceeds the pressure rating of the valve and prevents leakage through shaft area to atmosphere.

9.A secondary shaft sealing provides back‑up safety.

10.No flange gaskets required.

11.High Cv value.

12.Top and bottom shaft bearings for optimized support and small friction in all body materials up to DN 300, except cast iron.



Specifications

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 1-1/2 / DN 40, NPS 2-1/2 / DN 65, NPS 3 / DN 80, NPS 4 / DN 100, NPS 6 / DN 150, NPS 8 / DN 200, NPS 10 / DN 250

Valve Size Standard

DN

Valve Type

Butterfly

Media

Liquids, Water, Hot Water, Air

Stem

O-ring



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Pictures show



Application area

能源

化工

矿业