Features:

• Suitable for high purity applications
• 316L Stainless Steel enhances, welding and corrosion resistance
• Both manual and pneumatic actuator are available
• Face seal fittings (FSR) and butt weld connections
• Internal springless
• Design for very low particle generation
• Metal-to-metal diaphragm seals
• High cycle life
• 100% Helium leak tested

• Wetted
• Body： 316L stainless steel
• Seat： PCTFE*, Vespel®**
• Diaphragm： Elgiloy®
  
  Non-wetted
• Nut： 316 stainless steel
• Knob： ABS
  
  Operating Conditions
• Maximum Operating Pressure： 250 psig (17 barg): Pneumatic actuation;3500 psig (240 barg): Pneumatic and manual actuation
• Minimum Operating Pressure： vacuum
• Temperature： -40°F to 150°F (-40°C to 65°C)
• Pneumatic Actuator
  　　Operating Pressure： 70 - 125 psig
  　　Inlet Connection： 1/8”NPT (Female)
  　　Normally： Closed
  
  Functional Performance
• Flow Capacity： Cv=0.17
• Maximum Leak Rate:
  　　Inboard Leakage： 1 x 10^-9 atm cc/sec He
  　　Outboard Leakage： 1 x 10^-9 atm cc/sec He
  　　Across Seat Leakage： 4 x 10^-9 atm cc/sec He
• Proof Pressure： 150% of maximum rated pressure
• Burst Pressure： 400% of maximum rated pressure
  
  Surface Finish
• Standard Ra： 10 - 15 μin
• Optional Ra (EP)： 7 μin (Electropolished)
  
  Internal Volume
  　　0.8 cc