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Keystone 320/322 resilient seated butterfly valve

Keystone™ 320 is an economical resilient seated butterfly valve with dimensions according ISO standards for applications requiring shut-off control in both wafer (Figure 320) and lugged (Figure 322) style.

CHEMICAL & PETROCHEMICAL Keystone MARINE PULP & PAPER

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Specifications
Features
Product request

Certifications	PED
End Connection	Lugged, Wafer
Application	Air Circulation, Blowers, Balance of Plant, Chillers , Water distribution, Dryers & Evaporators, Cooling Water , Evaporators & Dryers , Filtration
Material	Ductile Iron
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 6 / DN 150, NPS 8 / DN 200, NPS 4 / DN 100, NPS 3 / DN 80, NPS 12 / DN 300, NPS 2-1/2 / DN 65, NPS 10 / DN 250
Valve Size Standard	DN
Valve Type	Butterfly
Media	Air, Liquids, Water, Water Glycol
Stem	O-ring

Bubble-tight shut-off at full rating in both directions.
One piece, specially profiled, wafer thin disc stem.
Extended body neck allows free access to actuator where pipe insulation has been fitted.
The seat and disc are the only two parts in contact with the medium.
Face to face dimensions according ISO 3202 Part 3, K1 (ISO 5752 series 20) and DIN EN 558-1, series 20.
The F320 wafer version has four flange locating holes for end of line service under certain conditions.
Suitable for pneumatic, electric and hydraulic actuation.
Standard actuation:
Handle (F414) on DN 50-200 valves.
Gear operators (F455) on DN 250-300.
The F322 lugged version is suitable for bi-directional end of line service.
Suitable for pneumatic, electric and hydraulic actuation.

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Keystone 320/322 resilient seated butterfly valve

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