Steriflow SVC Down-Flow Series Sanitary Check Valves

Two piece, spring-less sanitary check valve  for vertical liquid down-flow installations. Bioprocess drain lines are a common application. Note that liquids must have density/specific gravity very close to water. Applications areas are:

  • WFI point of use: back flow prevention, below point of use valve
  • Media/buffer prep: back flow prevention during dilution, drain line back flow prevention
  • Separation: centrifuge waste line to drain, back flow prevention
  • Purification, chromatography: waste line to drain back flow prevention
  • Agitator or pump seal water outlet to drain back flow prevention
  • F & B and consumer H & B process inputs, outputs, purified water and clean utility down line back flow prevention
 

Steriflow Valves

Features & Benefits:

  • The first and only vertical down flow sanitary check valve that is normally open and continuously self-draining.
  • Removal of traditional spring anf stem guide:
  • Eliminates areas where biburden and bacteria can accumulate 
  • Potential for particulate generation 
  • Very low cracking (opening) pressure
  • High flow rates with minimal pressure loss at increased flow compared with mechanical return check valves 

 

Specifications:

Size: 1/2'' - 4'' (DN15-DN100)

End Connections: ASME,DIN,ISO Tri-Clamp and Tube Weld Ends 

CV(Kv): 3.5-58.6 (3,03-50,7)

Wetted Material: ASME SA479 316L(UNS 31603) is standard. EN 10272:2000 GR 1.4435, AL-6XN®, Hastelloy C-22 and others are optional 

Disc Material: Polypropylene (all materials FDA and USP Class VI)

Gasket Material: Various (all materials FDA and USP Class VI) 

Max Pressure Temperature: 230 psi @100°F (16 bar @ 38°C); max temperature dependent on disc and gasket material

Cracking (opening pressure): Valve is always open, will only close if water based liquid rises in outlet drain line

Metallic Surface Finish: Wetted parts:ASME BPE SF5 20 Ra µin (0,5 Ra µm) electropolished; standard 8 Ra µin (0,2 Ra µm) electropolished optional

 

Manufacturer
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Steriflow Valves