Sanitary Spring Disc Check Valves AISI 304 & AISI 316L

Available in 304 or 316L stainless steel; 1" through 4" tube sizes as well as fractional sizes. Pneumatic actuation optional on some models and they are CIP capable.

  

• DIA Cherry-Burrell W45 Sanitary Check Valves are 'wafer-style', where product flow pushes the valve disc away from the seat. In the absence of forward flow pressure, the electropolished spring returns the disc and holds it closed against the seat. Back flow pressure also pushes the disc into the closed position.
• Two available seal options: O-Ring or Tri-Ring; in the disc OD provides tight closure while metal-to-metal contact between the disc and seat allows for long-lasting, durable operation.
• Machined from 316L stainless steel bar with all polished surfaces < 32 Ra, the W45 Check Valve has smooth internal surfaces for superior cleaning.
• When free-draining is required, the D45 must be vertically mounted.

   

DIA Sanitary Ball Check Valve

• DIA Cherry-Burrell Sanitary Ball Check Valves have a 316L stainless steel body with a curved offset ball trap. Product flow pushes the ball up into the trap and out of the product stream for full diameter flow. 
• This check valve is well suited to applications where there is pulsing flow and should not be used for sticky, adhesive products, or those with excessive viscosities where the ball can be held in the offset tube. 
• Vertical installations are preferred where product must flow bottom to top to gravity seat the ball. 
• For horizontal check valve installations, the curved offset must be upright and perpendicular to the plane of the pipeline for free-draining and proper ball seating. A minimum liquid pressure is required to seal ball. 
• DIA Cherry-Burrell Sanitary Ball Check Valves use larger diameter balls for the tube size than those used by competitors; eliminating the possibility of jamming the ball in the product tube, which can otherwise occur when subjected to high back pressure or hydraulic shock. 
• Choose the ball material to suit various applications; either (Buna-N, Viton, or EPDM) or solid nylon.

   

Sanitary Horizontal Spring Disk Check Valve

• DIA Cherry-Burrell 45HMP Sanitary Check Valves are 'wafer-style', where product flow pushes the valve disc away from the seat. In the absence of forward flow pressure, the electropolished spring returns the disc and holds it closed against the seat. Back flow pressure also pushes the disc into the closed position.
• Eccentric design allows free draining when mounted in the horizontal position.
• 316L body construction with sanitary polish
• CIP capable

   

DIA Air Blow Sanitary Check Valve

• DIA Cherry-Burrell 62B Sanitary Air Blow Check Valves are 'plug-style', where air pressure pushes the bonded rubber plug away from the seat. In the absence of air pressure, the spring returns the plug and holds it closed against the seat.
• For 3A applications the DIA Cherry-Burrell 62B Air Blow Check Valve must be used with the incorporated filter disc and suitable air to be in contact with product.
• Air usage: estimated air volume usage will depend upon the pipeline vessel to be evacuated. The Waukesha Cherry-Burrell 62B is rated up to 1600 Ft3/Hr. air flow.
  
  Applications:
   
• Evacuation of process pipelines for product recovery and/or drainage
• Air agitation of product in pipelines, tanks, and other equipment
• Air drying of process lines and equipment for corrosion resistance/ formation of protective oxide films