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  • Keystone Figure 129/139 Butterfly Valve with Powered Actuator
Keystone-K-figure 129 239 butterfly valve Powered Actuator

Keystone Figure 129/139 Butterfly Valve with Powered Actuator

Descrizione del prodotto

The Keystone Figure 129/139 is a heavy duty resilient seated butterfly valve featuring a steel reinforced cartridge design seat complete with powered actuator, configurable by power source, size, function and more.

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Funzionalità

Keystone Figure 129/139 Butterfly Valve
  • Replaceable, metal-reinforced seat, completely encapsulated by rubber, isolates the stem and body from the media and eliminates seat distortion due to high vacuum or turbulence.
  • Primary stem seal, formed by preloaded contact of disc hub with flatted seat surfaces, completely isolates stem and body from the line media.
  • Secondary stem seal, formed by an engineered interference fit of the stem through the seat, provides additional sealing integrity.
  • Rounded, polished disc edge provides full 360 degree concentric seating, minimum flow restriction, lower seating and unseating torques and maximum seat life.
  • Superior, one-piece thru-shaft design provides high-strength and positive disc control. Shaft ends are standardized for operator interchangeability.
  • Self-locking disc screws allow quick and easy disassembly and provide a positive connection.
  • Self-adjusting, bi-directional stem seal is suitable for full industrial vacuum and pressure, preventing external contamination of the stem area.
  • Heavy-duty, corrosion-resistant top bushing absorbs actuator side thrust loads.
  • Each valve is factory tested to 110 percent of specified pressure rating assures drop-tight shut-off.
  • Cast-in top plate is an integral part of the body and is standardized to allow direct mounting of all Keystone actuators.
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.
Attuatore pneumatico a un quarto di giro Keystone F89
  • Montaggio diretto su tutte le valvole a farfalla e a sfera Keystone.
  • Connessione valvola compatibile con prodotti Keystone (sistema metrico e imperiale) e ISO 5211
  • La configurazione con doppia cremagliera e pignone annulla i carichi laterali sull'albero del pignone, favorendo un'usura minima dei cuscinetti e una durata maggiore.
  • Funzionalità ottimizzata del prodotto con fermi di fine corsa installati come standard per la regolazione della posizione della valvola in posizione aperta e chiusa (+/- 5° a ogni estremità).
  • Il corpo in alluminio anodizzato con rivestimento in polvere elettrostatica (ESPC) offre una protezione durevole negli ambienti corrosivi.
  • Sono disponibili versioni a doppio e singolo effetto (con ritorno a molla) per un funzionamento sicuro e conveniente.
  • Fino a 12 molle singole offrono un intervallo di coppia adatto a gestire valvole a sfera e valvole a farfalla.
  • La molla precompressa e il pignone di trasmissione antiespulsione rendono sicuri il funzionamento e la manutenzione.

Specifiche

Keystone Figure 129/139 Butterfly Valve
Material
316 Stainless Steel, 316L Stainless Steel, Aluminum Bronze, Buna-N, Carbon Steel, Cast Iron, Ductile Iron, Epdm Rubber, Monel, Stainless Steel
Operating Temperature
Standard Temperature (-40 - 250F)
Pressure Class
ASME
Seat/Seal Type
Resilient
Shutoff Class
Zero Leakage
Standards
API 609, ASME B16.34
Valve Size
NPS 10 / DN 250, NPS 12 / DN 300, NPS 14 / DN 350, NPS 16 / DN 400, NPS 18 / DN 450, NPS 20 / DN 500, NPS 2-1/2 / DN 65, NPS 3 / DN 80, NPS 4 / DN 100, NPS 6 / DN 150, NPS 8 / DN 200
Valve Size Standard
DN, NPS
Valve Type
Butterfly
Attuatore pneumatico a un quarto di giro Keystone F89
Pressione di alimentazione
Fino a 8,3 bar
Temperatura
Da `-40 °C a 150 °C
Tipo
Quarto di giro

Documenti e schemi

Keystone Figure 129/139 Butterfly Valve
Emerson Powered Actuator
Attuatore pneumatico a un quarto di giro Keystone F89