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Keystone Model ParaSeal Butterfly Valves

Keystone Model ParaSeal Butterfly Valves are premium resilient seated butterfly valves, engineered by Emerson to deliver exceptional sealing performance and long-term reliability in diverse fluid control applications. Building on the proven design of the V11 series, the ParaSeal model features an advanced resilient seat technology that enhances bi-directional shut-off capabilities, making it ideal for critical systems where zero leakage is essential.


Details

Features

1.Available in wafer, lugged and double flanged

2.One piece body design acc. ISO 5752 series 20 (DIN 3202 K1)

3.Suitable for severe vacuum and up to 25 bar bubble tight shut off

4.The field replaceable seat fully isolates the body and shaft from the media

5.Bed grooved seat construction for tight shut off at full rated pressure, also for end of line service

6.Suitable for Bördel and slip-on flanges

7.A molded-in O-ring in the seat face for flange sealing. No flange gaskets required

8.Lenticular shaped disc to improve flow capacity

9.Splined, squared or key shaped disc/shaft connection

10.Dry shaft design

11.PTFE lined bearings to minimize friction

12.Actuator flange acc. ISO 5211


Specifications

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 2 / DN 50, NPS 2-1/2 / DN 65, NPS 3 / DN 80, NPS 4 / DN 100, NPS 6 / DN 150, NPS 12 / DN 300, NPS 14 / DN 350, NPS 16 / DN 400, NPS 18 / DN 450, NPS 20 / DN 500, NPS 24 / DN 600

Valve Size Standard

NPS, DN

Valve Type

Butterfly

Media

Air, Inert Gas, Water

Stem

O-ring



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Pictures show



Application area

能源

化工

矿业