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The NIV series media isolation valve is a solenoid-operated device that utilizes a flexible diaphragm to isolate the actuation mechanism from the fluid path. Media isolation valves are commonly used for a wide variety of applications, including those that require precise, repeatable dispensing of media for analytical instrumentation. All wetted areas of the valve are PTFE or PEEK, making this series ideal for use with corrosive media.
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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. Choose from four orifice sizes available as 2-way normally-closed, 2-way normally-open, or 3-way selector/diverter. Special configurations available by request.

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 ultra-low leak applications.

  • Low power consumption
  • Compact, lightweight design
  • Bidirectional
  • Minimal dead volume
  • Fully flushable
  • All wetted areas PTFE or PEEK
  • Ideal for use with corrosive media
  • High cycle life
  • Fast response time
  • Proudly made in the USA

For a PEEK-body version of this valve, see the PIV series.

Model Power Voltage Amps
NR1 1.0 watts 12 VDC 0.08
24 VDC 0.04

NR2 1.5 watts 12 VDC 0.13
24 VDC 0.06

NR3 4.2 watts 12 VDC 0.40
24 VDC 0.18

NR4 7.2 watts 12 VDC 0.60
24 VDC 0.30

NIV Series PTFE Isolation Valves Schematics

Valve Type Orifice Ports Model Part No. Width Height
2-Way Normally-Closed 0.040" #10-32 NR1 NR1-2 0.750" 1.155"
0.062" 1/4-28 UNF NR2 NR2-2 1.000" 1.488"
0.093" 1/4-28 UNF NR3 NR3-2 1.250" 1.863"
0.156" 1/8 NPS NR4 NR4-2 1.500" 2.088"

2-Way Normally-Open 0.040" #10-32 NR1 NR1O-2 0.750" 1.163"
0.062" 1/4-28 UNF NR2 NR2O-2 1.000" 1.493"
0.093" 1/4-28 UNF NR3 NR3O-2 1.250" 1.814"
0.156" 1/8 NPS NR4 NR4O-2 1.500" 2.039"

3-Way Selector/Diverter 0.040" #10-32 NR1 NR1-3 0.750" 1.161"
0.062" 1/4-28 UNF NR2 NR2-3 1.000" 1.492"
0.093" 1/4-28 UNF NR3 NR3-3 1.250" 1.814"
0.156" 1/8 NPS NR4 NR4-3 1.500" 2.039"

2D DrawingsFile
Additional Circuitry OptionNone
Applications FormApplications Form
Coil Wire Size26 AWG
Connection18" Wire Leads
Data SheetData Sheet
DocumentationCE, RoHS
Function2-Way Normally-Closed
Material, WettedPTFE, FKM
Max PSI28" Hg to 30 psig
Max. Flow60 l/min @ 30 psig (2 bar)
MediumAir, Water, Gas, Fluids
MountIn-Line Ports
NotesISO 9001. PPS Body options also available.
Operating PressureVac to 30 psig
Operating Temperature Range-20 to 158°F (-29 to 70°C)
Orifice / Port0.040" / #10-32
Response Time5 to 20 ms
Thread Depth#2-56 (max. 0.094")
Voltage24 VDC
Wattage1.1 Watts
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