Name: Keystone Model OptiSeal F14&shy;F17 Butterfly Valves
Brand: Keystone

OptiSeal Figure 14 - 17 Butterfly Valves

A resilient seated Butterfly valve for general purpose applications

Keystone Model OptiSeal F14F17 Butterfly Valves

Specs

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

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

Valve Type

Butterfly

Media

Liquids, Water, Hot Water, Liquid, Air

Stem

O-ring

Features

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.