Keystone-K-Series GR Butterfly Valve Powered Actuator

Keystone Series GR Butterfly Valve with Powered Actuator

Produktbeschreibung

The Keystone Series GR is a general purpose resilient seated butterfly valve available in flanged, lugged or wafer body style complete with powered actuator, configurable by power source, size, function and more.

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Keystone Series GR Butterfly Valve

Wafer and lugged body design with face-to-face dimension, according to EN 558 Series 20 and API 609.
Designed according to EN 593 and API 609.
The seat is field replaceable and fully isolates the body and shaft from the flow.
Primary shaft sealing exceeds the pressure rating of the valve and prevents leakage through shaft area to atmosphere.
A secondary shaft sealing provides back-up safety.
A molded-in O-ring in the seat for flange sealing eliminates the need for gaskets.
Shaft seals prevent moisture penetrating into the shaft area.
The two piece shaft allows for a thin disc and provides minimal obstruction to flow (up to DN 300/ NPS 12).
Rounded polished disc edge gives full concentric sealing, lower torques, longer seat life and drop-tight shut-off.
Body locating holes allow ease of installation and centering between the flanges.
Extended body neck allows for pipe insulation.
Top and bottom shaft bearings for optimized support and minimum friction and decreased torque.

Emerson Powered Actuator

Direct mounting to all Keystone butterfly valves and ball valves.
Valve connection compatible with Keystone (imperial and metric) and ISO 5211.
Double Rack and Pinion design nullifies side loads on the pinion shaft, minimizing bearing wear and extending life.
Optimized product flow with standard mounted travel stops for valve position adjustment in open and close position (+/- 5° at each end).
Anodized aluminium body with electrostatic powder coating (ESPC) finish provides durable protection against corrosive environments.
Double acting and spring return versions available for cost effective and safe operation.
Up to 12 individual springs offer flexible torque range for both ball as butterfly valves.
Pre-compressed spring design and anti-blowout drive pinion means safe maintenance and operation.

Keystone F89, pneumatischer Doppelkolben-Schwenkantrieb

Direkter Aufbau an alle Keystone Absperrklappen und Kugelhähne
Armaturenanschluss nach Keystone-Standard (metrisch oder zöllig) oder ISO 5211
Doppelte Zahnstangen-Ritzel Ausführung vermeidet Biegebeanspruchung der Ritzelwelle, wodurch der Lagerverschleiß minimiert und die Standzeit erhöht wird
Serienmäßige Endanschläge (+/-5°) zur Einstellung der AUF- und ZU-Richtung ermöglichen die exakte Einstellung der Absperrarmatur und somit des Medienflusses
Gehäuse aus anodisierten Aluminium mit elektrostatischer Pulverbeschichtung (ESPC) ermöglicht dauerhaft hohe Korrosionsbeständigkeit
Doppeltwirkende und federrückstellende Versionen für kosteneffektiven und sicheren Betrieb erhältlich
Bis zu 12 Federn bieten flexiblen Drehmomentbereich für Kugelhähne und Absperrklappen
Vorgespannte Federn und ausblassicheres Ritzel sorgen für Sicherheit bei Wartung und Betrieb