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Product Detail

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Bolted bonnet bellows seal globe valves

Description

Forged for higher safety: Increased toughness, strength and fatigue resistance.Guided disc: Seat and disc hardfaced with CoCr alloy, ground and lapped.



Size range(s)


NPS 2 1/2 - 10

(DN 65 - 250)

Pressure rating

ASME Class 600 - 1500

Standard connections

Butt weld

Features and benefits

  • Long cycle life bellows (3000 cycles) in Gr. 321 (stainless) or Inconel. Designed and successfully tested in high pressure/temperature conditions.
  • Two-part bellows.
  •  Two secondary stem seals: a) Backseat in open position; b) Graphite packing.
  •  Low torque due to: a) Non-rotating stem prevents torsion of bellows; b) Stem nut thrust bearings; c) Central lubrication.