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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 29

CV

 N/A 0.019

Maximum Operating Pressure

 N/A 4000 psig

Maximum Pressure Differential

 N/A 200 psid

Connection A

 N/A 1/4" OD Tube Compression

Connection B

 N/A 1/4" OD Tube

Screened

 N/A None

Orifice Diameter

 N/A 0.029 in

Orifice Diameter Accuracy

 N/A ±0.0005 in

Width Across Flats (Hex)

 N/A 9/16 in

Total Length

 N/A 1.54 in

Width Across Flats (Hex) 2

 N/A 1/2 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: 5.06 5 psig: 11.3 10 psig: 16.6 15 psig: 20.3 20 psig: 23.7 25 psig: 27.1 30 psig: 30.5 40 psig: 37.1 50 psig: 43.9 60 psig: 50.4 70 psig: 57.2 80 psig: 64.0 90 psig: 71.0 100 psig: 78.0

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

 N/A 5 In. Hg.: 7.23 10 In. Hg.: 9.11

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

 N/A 15 In. Hg.: 9.56 20 In. Hg.: 9.56 30 In. Hg.: 9.56

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

 N/A 1 psig (6.9 kPag): 2.39 5 psig (34.5 kPag): 5.31 10 psig (69.0 kPag): 7.83 15 psig (103.4 kPag): 9.58 20 psig (137.9 kPag): 11.2 25 psig (172.4 kPag): 12.8 30 psig (206.9 kPag): 14.4 40 psig (275.8 kPag): 17.5 50 psig (344.8 kPag): 20.7 60 psig (413.7 kPag): 23.8 70 psig (482.7 kPag): 27.0 80 psig (551.6 kPag): 30.2 90 psig (620.6 kPag): 33.5 100 psig (689.5 kPag): 36.8

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

 N/A 5 In. Hg. (127 Mm. Hg.): 3.41 10 In. Hg. (254 Mm. Hg.): 4.30

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

 N/A 15 In. Hg. (381 Mm. Hg.): 4.51 20 In. Hg. (508 Mm. Hg.): 4.51 30 In. Hg. (762 Mm. Hg.): 4.51

Water Flow - Gallons/minute (GPM)

 N/A 1 psig: 0.019 2 psig: 0.027 3 psig: 0.033 4 psig: 0.038 5 psig: 0.042 6 psig: 0.047 7 psig: 0.050 8 psig: 0.054 9 psig: 0.057 10 psig: 0.060 15 psig: 0.074 20 psig: 0.085 30 psig: 0.104 40 psig: 0.120 50 psig: 0.134 60 psig: 0.147 70 psig: 0.159 80 psig: 0.170 90 psig: 0.180 100 psig: 0.190

Water Flow - Liters/minute (LPM)

 N/A 1 psig (6.9 kPag): 0.072 2 psig (13.8 kPag): 0.102 3 psig (20.7 kPag): 0.125 4 psig (27.6 kPag): 0.144 5 psig (34.5 kPag): 0.161 6 psig (41.4 kPag): 0.161 7 psig (48.3 kPag): 0.190 8 psig (55.2 kPag): 0.203 9 psig (62.1 kPag): 0.216 10 psig (69 kPag): 0.227 15 psig (103.4 kPag): 0.279 20 psig (137.9 kPag): 0.322 30 psig (206.9 kPag): 0.394 40 psig (275.8 kPag): 0.455 50 psig (344.8 kPag): 0.509 60 psig (413.7 kPag): 0.557 70 psig (482.7 kPag): 0.602 80 psig (551.6 kPag): 0.643 90 psig (620.6 kPag): 0.682 100 psig (689.5 kPag): 0.719

Flow Data Status

 N/A Generic