The steel-cone-and-rubber-membrane check valve is designed to provide efficient backflow prevention of liquid and gaseous media in a range of process cooling and heating applications. The valve does not have movable parts and consists only of two components — a perforated stainless steel cone and a rubber membrane.

Characteristics of the valve include: 

• The ability to achieve a tight shutoff under minimum back pressure.
  
• The ability to shut securely even when impurities such as sand are present.
  
• Almost noiseless with no hammering.
  
• Low cracking pressure.
  
• No movable, prone-to-wear parts (low in maintenance, long-lasting).
  
• The ability to shut in media in which mechanical valves stick.
  
• Good chemical and corrosion resistance.
  
• Easy installation, even in retrofits (between flanges).
  
• The ability to function simultaneously as a filter, thereby protecting pumps and other components.
  
• Secure flow monitoring (eliminates measuring errors due to recoil).
  
• The ability to operate in any direction.

  For more information about the cone-shaped valves, contact Great Western Supply Co., Houston, Texas, (713) 681-4786, e-mail Harry Boudreaux at hboudreaux@gwspipe.com, or visit www.stopsilent.com.