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Upchurch Scientific National Pipe Thread Adapter Assy for 3/16 inch OD Tubing, 1/8 NPT Male to 5/16-24 Flat-Bottom Female, PEEK, 100/pk - U-514C

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National Pipe Thread NPT Adapter Assembly for 3/16” OD Tubing, 1/8” NPT Male to 5/16-24 Flat-Bottom Female, 70.4 μL, 0.125” (3.2 mm) Thru hole, 500 psi (34 bar), Black/Natural, PEEK, 100 per pack

Includes: (1) OD x P-132 Fitting

Product Number: U-514C

Categories: Connectors, Fluidic Connections, National Pipe Thread Adapters, Threaded Adapters

This Upchurch Scientific / IDEX Health & Science / Biotech Fluidics NPT (National Pipe Thread) Adapter Assembly is specifically manufactured from PEEK making it durable and chemically resistant. It is optimally suited for low pressure applications. It has a tubing OD of 3/16" and it's thread configuration is 1/8" NPT Male to 5/16-24 Flat-Bottom Female ports. It is black in color and comes with (1)OD x P-132 Fitting.

Related products:

  • A-329 - Polymer Tubing Cutter Large Bore

Available in the Following Configurations:

  • U-514 - NPT Adapter Assembly PEEK 1/4 NPT Male x 1/4-28 Female, Single pack
  • U-514C - NPT Adapter Assembly PEEK 1/4 NPT Male x 1/4-28 Female, 100 per pack
  • U-514-01 - NPT Adapter Body PEEK 1/4 NPT Male x 1/4-28 Female, Single pack
  • U-514-01C - NPT Adapter Body PEEK 1/4 NPT Male x 1/4-28 Female, 100 per pack

Threaded Adapters

Two of the many challenges researchers face regularly, are trying to use one style of fitting for all connections, or trying to join two different sizes of tubing. To assist in overcoming these challenges we have engineered one of the most extensive threaded adapter lines available.

Threaded Adapters come in a wide variety of configurations to meet your system requirements. They are designed to effectively bring together connectors with different threads. We offer them in English, Metric, and NPT versions. Manufactured from inert polymers and stainless steel they deliver excellent chemical resistance.

National Pipe Thread Adapters

These adapters make connections to female 1/8” and 1/4” National Pipe Thread (NPT) ports.

Manufactured from PEEK polymer, our NPT Adapters are durable and chemically resistant. We provide versions with either 1/4-28 or 5/16-24 flat-bottom threads, suitable for most low pressure applications.

Please Note: Wrap the threads on the NPT side of these adapters with thread seal tape (plumber’s tape) to ensure a leak-free seal.

Part No. Description Colour Tubing OD Includes Thru-hole Swept Volume Pressure Rating
1/8” MALE NATIONAL PIPE THREAD ADAPTERS
U-510 PEEK 1/8” NPT, M to 1/4-28 FB, F Adapter Red 1/8” (1) XP-308 0.062” (1.60 mm) 17.3 μL 500 psi (34 bar)
U-514 PEEK 1/8” NPT, M to 5/16-24 FB, F Adapter Natural 3/16” (1) XP-132 0.125” (3.2 mm) 70.4 μL 500 psi (34 bar)
1/4” MALE NATIONAL PIPE THREAD ADAPTERS
U-500 PEEK 1/4” NPT, M to 1/4-28 FB, F Adapter Red 1/8” (1) XP-308 0.062” (1.60 mm) 17.3 μL 500 psi (34 bar)
U-504 PEEK 1/4” NPT, M to 5/16-24 FB, F Adapter Natural 3/16” (1) XP-132 0.125” (3.2 mm) 70.4 μL 500 psi (34 bar)

F = Female (internal) threads; M = Male (external) threads; XL = extra long; C = Coned; FB = Flat-Bottom
* The pressure rating of this adapter exceeds the pressure holding ability of the fittings and tubing used with it.
** Thru-hole tapers from 0.188” (4.80 mm) to 0.125” (3.20 mm).


  • Model: U-514C
  • Manufactured by: Upchurch Scientific