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  bellows sealed globe valve introduction

  The Chemical, Refining, and Pharmaceutical industries are included in this category. Each essential componentwithin a processing system can impose productivity constraints on the entire system. Each element in a processing system needs to permit increased throughput while accommodating plant safety and environmental concerns and must comply with relevant industry standards and legislation. Every critical component in a processing system affects the effectiveness of the entire system, determining the plant’s capacity to deliver results according to production targets. Valves play such a critical role in most processing environments.
  Development of valve technologies matches demands of industry and typically aims at meeting or exceeding requirements in terms of safety and production efficiency. Conventional technologies are increasingly being replaced by designs that are more effective and which comply with new industry standards. Lifetime cost of ownership is a measure often used to determine the real value of a valve and such a calculation ought to take account of the cost of outages, downtime for maintenance, and potential expenses associated with environmental clean-up or containment. There is a growing industry acceptance of the fact that the most optimal valve type for hazardous media processing (also called “demanding” applications) is known as the “bellows sealed globe valve” (BSGV).
  
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  The benefits of this design for bellows seal shut-off valves

  Bellows Sealed Globe Valves can be supplied according to all ANSI Class ratings, up to and including ANSI Class 2500. The valves can then be customized based on the required hardfacing material and the end connection type.
  > Size: ¼" to 4"
  > Up to ANSI class 2500
  > Stainless steel and carbon steel
  > Threaded, flanged or welded connections
  > ASME qualified
  > N & NPT stamp holder
  > Manual, pneumatic, or electric actuation
  > Most bellows have been qualified up to to 10,000 cycles, with some unique 1,000,000 cycle qualification on a limited number of bellows
  > All valves are 100% helium leak tested at leak rates less than 1 x 10-6
  > Flexible metallic bellows replaces the function of the conventional gland, reducing maintenance frequency and operation cost
  > Bellows is multi-ply, welded seam construction from Inconel 625 material, which provides long life
  > Bellows is welded to stem and bonnet to ensure zero leakage through gland, which eliminates harmful chemicals being released into the atmosphere
  > Screwed and seal welded joints replace flanged joints to ensure zero leakage (the valve is thus hermetically sealed)
  > Valve seating can be refurbished by simply lapping the body seat and replacing the disc, which can be performed in the field or end users shop
  
  
  
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  Gute role of various types of shut-off valves

  Gute Stop-Check Valves provide the same function as a Y-Globe valve, but also provide check-valve protection in the event of backflow. The stem is not connected to the disc. When the valve is in the open position the disc is free to respond to the flow.
  Gute Blow-down Valves are used to remove impurities from boilers or their associated pipelines in order to maintain boiler integrity and efficiency. Gute provides both intermittent and continuous blow-down valves in both angle and Y-Globe designs.
  Special Globe Valve Designs such as High-Pressure Angle Valves provide low-pressure drops and eliminate elbows and are used in several industries including urea, power generation, polymer, oil and gas.
  
  
  
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