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Manifolds Diaphragm and Bellows Valve

  • DRASTAR Core Valve is an advanced concept of valve that Drastar developed for ultra-high purity specialty gases extensively used in the semiconductor manufacturing line, bulk gas line and other facility lines. Core valves have integrated and improved all the merits of diaphragm valve, bellows valve and needle valve to best work (Drastar Patent #10-1510987).
  • Model No. : Core Valve (UHP, NPT, PT)
  • Brand : Drastar
Datasheet

Surface finishes to AP or B.A. 25Ra E.P. 10Ra or 5Ra 
Improved for micro and precise adjustment 
Pull and lock device (Drastar’s patent #10-1370537) prevents the knob’s self-turning 
Easy operation 
Applicable for 20bar(290psig) ~ max 750bar(11,000psig) 

 Ports Size

  1/4"        1/2"        3/4"

  Cv Value

  0.4          1.2          2.8

 Design Proof Pressure

 150% maximun rated

  Grade

  AP (Ry ≤ 25?) 
  BA (Ry ≤ 3.0?) 
  EP (Ry ≤ 0.7?)  

  Seat Material(DISK)

  PCTFE / VESPEL  

  Body Material

  Stainless Steel 316L 
     or 
  Stainless Steel 316L Double melt

  Handle Material

  Aluminum

  Max. Working 
  Pressure Range

  20bar, 50bar, 250bar, 500bar, 750bar  

  Operating  Temperature

  -40°C ~ +70°C (-40°F ~ +165°F) Standard 
  +250°C ~ +500°C (+328°F ~ +1000°F) Optional

Each product is designed for maximum safety and ease of use. However, for the most safe and efficient use, the ideal working pressure can be used within 95% of the maximum working pressure of each model. For precise and smooth operation and extended product life, It is highly recommended to select and use the model.

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  • Manifolds Diaphragm and Bellows Valve