Keystone-K-Series GR Butterfly Valve Powered Actuator

Keystone Series GR Butterfly Valve with Powered Actuator

Descripción del producto

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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Características

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.

Actuador neumático de un cuarto de vuelta Keystone F89

Montaje directo en todas las válvulas de mariposa y de bola Keystone.
Conexión de válvula compatible con Keystone (imperial y métrico) e ISO 5211.
El diseño de doble cremallera y piñón anula las cargas laterales en el eje de piñón, minimizando el desgaste del cojinete y prolongando la vida útil.
Flujo del producto optimizado con topes de carrera montados de manera estándar para ajustar la posición de la válvula en posición abierta y cerrada (+/- 5� en cada extremo).
El cuerpo de aluminio anodizado con acabado de pintura electrostática en polvo (ESPC) brinda una protección duradera contra ambientes corrosivos.
Versiones de doble acción y retorno por resorte disponibles para un funcionamiento rentable y seguro.
Hasta 12 resortes individuales ofrecen un rango de par de torsión flexible para válvulas de bola y mariposa.
El diseño de resorte precomprimido y el piñón de accionamiento antiexplosión ofrecen mantenimiento y operación seguros