PTFE & PEEK Media Isolation Valves

The NIV series media isolation valve is a solenoid-operated device that uses 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 either PTFE or PEEK, making this series ideal for use with corrosive media.

NR4 7.2 watts 12 VDC 0.60 24 VDC 0.30
NIV Series PTFE Isolation Valves Schematics

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.

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"

Clippard NIV Series PTFE Gradient Mixing Valves

The gradient mixing isolation valve combines multiple solenoids into a single compact unit. The valve incorporates two, three, four or six separate sources of media into one stream that is integral to a single block. The valves have independent inlets and one common outlet or one common inlet and multiple independent outlets.

These gradient manifolds are useful for solvent selection, stream splitting, flushing and other automated applications. These valves utilize a standard 2-way, normally-closed configuration. Standard options include four different orifice sizes, available in 12 VDC or 24 VDC.

Mixing Valve Features:

  • Ideal for gradient, mixing, and diverting applications
  • Compatible with corrosive and aggressive fluids
  • Variety of multi-valve configurations
  • Flow paths may be controlled individually
  • Flow paths are all the same length
  • Equal pressure drop, response time and internal volumes

Click here to learn more about NIV series
multi-channel gradient mixing valves.


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Related Products:

NIV Series Solenoid-Operated Media Isolation Valves