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    Precision orifice assemblies that adapt to common fittings used in the process industry. Press-fit inserts are used with standard compression tube fittings to form a precision orifice assembly. The fittings shown here are for 1/4" OD tubing, or 3/16" OD tubing.
Unit of Measure

Material

 N/A 316 SS

Nominal Orifice Size

 N/A 12

CV

 N/A 0.0034

Maximum Operating Pressure

 N/A 4000 psig

Maximum Pressure Differential

 N/A 200 psid

Connection A

 N/A 1/4" NPT Male

Connection B

 N/A 1/4" OD Tube Compression

Screened

 N/A None

Orifice Diameter

 N/A 0.0122 in

Orifice Diameter Accuracy

 N/A ±0.0005 in

Width Across Flats (Hex)

 N/A 9/16 in

Total Length

 N/A 1.48 in

Width Across Flats (Hex) 2

 N/A 9/16 in

N/A

    Compression fittings are used with a metal or rigid plastic tubing. These fittings are used in instrumentation for process control systems. The nature of the connectors allow for easy disassembly and re-assembly without the need for teflon tape or sealants.

N/A

  • High Pressure Capability
  • Bi-directional Flow
  • Economical Precision Orifice
  • Repeatable Orifice Size and Shape
  • Predictable Flow Rate

Air Flow at Pressure - Standard Cu. Ft. Per Hour (SCFH)

 N/A 1 psig: 0.843 5 psig: 1.94 10 psig: 2.73 15 psig: 3.43 20 psig: 4.07 25 psig: 4.66 30 psig: 5.23 40 psig: 6.44 50 psig: 7.59 60 psig: 8.75 70 psig: 9.92 80 psig: 11.1 90 psig: 12.2 100 psig: 13.4

Air Flow at Vacuum - Standard Cu. Ft. Per Hour (SCFH)

 N/A 5 In. Hg.: 1.23 10 In. Hg.: 1.55

Air Flow at Vacuum, Choked Flow - Standard Cu. Ft. Per Hour (SCFH)

 N/A 15 In. Hg.: 1.68 20 In. Hg.: 1.68 30 In. Hg.: 1.68

Air Flow at Pressure - Standard Liters Per Minute (SLPM)

 N/A 1 psig (6.9 kPag): 0.398 5 psig (34.5 kPag): 0.92 10 psig (69.0 kPag): 1.29 15 psig (103.4 kPag): 1.62 20 psig (137.9 kPag): 1.92 25 psig (172.4 kPag): 2.20 30 psig (206.9 kPag): 2.47 40 psig (275.8 kPag): 3.04 50 psig (344.8 kPag): 3.58 60 psig (413.7 kPag): 4.13 70 psig (482.7 kPag): 4.68 80 psig (551.6 kPag): 5.23 90 psig (620.6 kPag): 5.78 100 psig (689.5 kPag): 6.33

Air Flow at Vacuum - Standard Liters Per Minute (SLPM)

 N/A 5 In. Hg. (127 Mm. Hg.): 0.582 10 In. Hg. (254 Mm. Hg.): 0.730

Air Flow at Vacuum, Choked Flow - Standard Liters Per Minute (SCFH)

 N/A 15 In. Hg. (381 Mm. Hg.): 0.792 20 In. Hg. (508 Mm. Hg.): 0.792 30 In. Hg. (762 Mm. Hg.): 0.792

Water Flow - Gallons/minute (GPM)

 N/A 1 psig: 0.0034 2 psig: 0.0048 3 psig: 0.0059 4 psig: 0.0068 5 psig: 0.0076 6 psig: 0.0083 7 psig: 0.0090 8 psig: 0.0096 9 psig: 0.0102 10 psig: 0.0108 15 psig: 0.0132 20 psig: 0.0152 30 psig: 0.0186 40 psig: 0.0215 50 psig: 0.0240 60 psig: 0.0263 70 psig: 0.0284 80 psig: 0.0304 90 psig: 0.0323 100 psig: 0.0340

Water Flow - Liters/minute (LPM)

 N/A 1 psig (6.9 kPag): 0.0129 2 psig (13.8 kPag): 0.0182 3 psig (20.7 kPag): 0.0223 4 psig (27.6 kPag): 0.0257 5 psig (34.5 kPag): 0.0288 6 psig (41.4 kPag): 0.0288 7 psig (48.3 kPag): 0.0341 8 psig (55.2 kPag): 0.0364 9 psig (62.1 kPag): 0.0386 10 psig (69 kPag): 0.0407 15 psig (103.4 kPag): 0.0498 20 psig (137.9 kPag): 0.0576 30 psig (206.9 kPag): 0.0705 40 psig (275.8 kPag): 0.0814 50 psig (344.8 kPag): 0.0910 60 psig (413.7 kPag): 0.0997 70 psig (482.7 kPag): 0.1077 80 psig (551.6 kPag): 0.1151 90 psig (620.6 kPag): 0.1221 100 psig (689.5 kPag): 0.1287

Flow Data Status

 N/A Generic