Keystone carries a comprehensive range of valves to suit a wide range of industrial applications. The range can be seamlessly integrated with the Keystone range of pneumatic/ electric actuators and accessories, to create complete flow control packages.

Butterfly Valves
A versatile range of resilient seated quarter turn butterfly valves is available in various designs, configurations and materials to match all specifications.

• Size range from DN40 - DN2400
  
• Pressure rating from full vacuum to PN20
  
• Temperature range from 14¡ÆF to 320¡ÆF (-10¡ÆC to 160¡ÆC)
  

• Size range DN25 - DN150
  
• Pressure range from from full vacuum uo to PN20
  
• Temperature range from 14¡ÆF to 203¡ÆF (-10¡ÆC to 95¡ÆC)
  
• Flange connections wafer style, and various other connections like IDF/FIL male part, Butt weld (std) for RJT/BSM male part, Clamp connection
  

• Size range from DN50 - DN700 (larger diameters on request)
  
• Pressure range PN10/16/24, ASME class 150/300
  
• Temperature range from -58¨¬F to 842¨¬F (-50¨¬C to 450¨¬C)
  

• Size range from DN40 - DN300
  
• Pressure range up to PN20
  
• Temperature range from -22¨¬F to 320¨¬F (-30¡ÆC to 160¡ÆC)
  
• Flange accommodation PN 6/10/16/25, ASME class 150/300, JIS 5/10/16/20/30