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NIV Gradient Mixing Valves

Configure NIV-G

NIV series multi-channel gradient valves feature multiple 2-Way, Normally-Closed PTFE media isolation valves connected around a central body. This unique design provides significant reduction in internal volume with enhanced mixing capabilities. Each actuator operates independently, allowing for flow of various media to be mixed or for one media to be split into multiple streams. These multi-channel gradient mixing valves are useful for solvent selection, stream splitting, flushing, and other automated applications.
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A unique feature of the NIV series is the one-piece valve stem that functions as a sealing membrane while also supporting and centralizing the poppet in the seating area. This multifunctional diaphragm/poppet results in a simplified design with fewer parts (only two for the 2-way and three for the 3-way), longer life and minimal dead volume.

Industries and applications that commonly use these types of valves to isolate gas or liquid include: drug dispensing, laboratory equipment, analytical, chemical analysis, sampling, life science/biotech, genetic research, gas chromatography, spectrometry, DNA synthesizing, blood analyzing, printing, diagnostic equipment, fermentation, water treatment and more.

  • Individually controlled flow paths
  • Bidirectional
  • Low power consumption
  • Minimal dead volume
  • All wetted areas PTFE
  • Ideal for gradient, mixing, and diverting applications
  • Compatible with corrosive and aggressive fluids
  • Equal pressure drop, response time and internal volumes
  • High cycle life
  • Fast response time

Model Flow @ 30 psig Orifice Ports Model 12 VDC 24 VDC
 
2 Valves 6 l/min 0.040" 1/4-28 UNF NR1 NR1-2-12-G2 NR1-2-24-G2
16 l/min 0.062" 1/4-28 UNF NR2 NR2-2-12-G2 NR2-2-24-G2
38 l/min 0.093" 1/4-28 UNF NR3 NR3-2-12-G2 NR3-2-24-G2
58 l/min 0.156" 1/8 NPS NR4 NR4-2-12-G2 NR4-2-24-G2
3 Valves 6 l/min 0.040" 1/4-28 UNF NR1 NR1-2-12-G3 NR1-2-24-G3
16 l/min 0.062" 1/4-28 UNF NR2 NR2-2-12-G3 NR2-2-24-G3
38 l/min 0.093" 1/4-28 UNF NR3 NR3-2-12-G3 NR3-2-24-G3
58 l/min 0.156" 1/8 NPS NR4 NR4-2-12-G3 NR4-2-24-G3
4 Valves 6 l/min 0.040" 1/4-28 UNF NR1 NR1-2-12-G4 NR1-2-24-G4
16 l/min 0.062" 1/4-28 UNF NR2 NR2-2-12-G4 NR2-2-24-G4
38 l/min 0.093" 1/4-28 UNF NR3 NR3-2-12-G4 NR3-2-24-G4
58 l/min 0.156" 1/8 NPS NR4 NR4-2-12-G4 NR4-2-24-G4
6 Valves 6 l/min 0.040" 1/4-28 UNF NR1 NR1-2-12-G6 NR1-2-24-G6
16 l/min 0.062" 1/4-28 UNF NR2 NR2-2-12-G6 NR2-2-24-G6
38 l/min 0.093" 1/4-28 UNF NR3 NR3-2-12-G6 NR3-2-24-G6
58 l/min 0.156" 1/8 NPS NR4 NR4-2-12-G6 NR4-2-24-G6
2D Drawings2D Files
Additional Circuitry OptionNone
ConnectionWire Leads, 18" (45 cm)
Data SheetData Sheet
DocumentationCE, RoHS Compliant, ISO 9001 Certified
Flow Range5 to 60 l/min @ 30 psig (2 bar) Air
Function2-Way Normally-Closed
Material, WettedPTFE
Max. Flow60 l/min @ 30 psig (2 bar) Air
MediumAir, Water, Gas or Corrosive Fluids
Mount#4-40 (metric also available)
NoteCE, RoHS Compliant, ISO 9001. High Pressure & PEEK Body options also available.
Operating PressureVacuum to 30 psig (2 bar)
Operating Temperature Range-20 to 158°F (-29 to 70°C)
Product Line BrochureIsolation Valves
Response Time5 to 50 ms typical
Voltage12 VDC
Weight (lbs.)0.1000

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