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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 9

CV

 N/A 0.0019

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 0.0091 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: 0.479 5 psig: 1.10 10 psig: 1.57 15 psig: 1.97 20 psig: 2.33 25 psig: 2.69 30 psig: 3.03 40 psig: 3.75 50 psig: 4.45 60 psig: 5.13 70 psig: 5.83 80 psig: 6.53 90 psig: 7.20 100 psig: 7.88

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

 N/A 5 In. Hg.: 0.703 10 In. Hg.: 0.892

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

 N/A 15 In. Hg.: 0.964 20 In. Hg.: 0.964 30 In. Hg.: 0.964

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

 N/A 1 psig (6.9 kPag): 0.226 5 psig (34.5 kPag): 0.52 10 psig (69.0 kPag): 0.74 15 psig (103.4 kPag): 0.93 20 psig (137.9 kPag): 1.10 25 psig (172.4 kPag): 1.27 30 psig (206.9 kPag): 1.43 40 psig (275.8 kPag): 1.77 50 psig (344.8 kPag): 2.10 60 psig (413.7 kPag): 2.42 70 psig (482.7 kPag): 2.75 80 psig (551.6 kPag): 3.08 90 psig (620.6 kPag): 3.40 100 psig (689.5 kPag): 3.72

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

 N/A 5 In. Hg. (127 Mm. Hg.): 0.332 10 In. Hg. (254 Mm. Hg.): 0.421

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

 N/A 15 In. Hg. (381 Mm. Hg.): 0.455 20 In. Hg. (508 Mm. Hg.): 0.455 30 In. Hg. (762 Mm. Hg.): 0.455

Water Flow - Gallons/minute (GPM)

 N/A 1 psig: 0.0019 2 psig: 0.0027 3 psig: 0.0033 4 psig: 0.0038 5 psig: 0.0042 6 psig: 0.0047 7 psig: 0.0050 8 psig: 0.0054 9 psig: 0.0057 10 psig: 0.0060 15 psig: 0.0074 20 psig: 0.0085 30 psig: 0.0104 40 psig: 0.0120 50 psig: 0.0134 60 psig: 0.0147 70 psig: 0.0159 80 psig: 0.0170 90 psig: 0.0180 100 psig: 0.0190

Water Flow - Liters/minute (LPM)

 N/A 1 psig (6.9 kPag): 0.0072 2 psig (13.8 kPag): 0.0102 3 psig (20.7 kPag): 0.0125 4 psig (27.6 kPag): 0.0144 5 psig (34.5 kPag): 0.0161 6 psig (41.4 kPag): 0.0161 7 psig (48.3 kPag): 0.0190 8 psig (55.2 kPag): 0.0203 9 psig (62.1 kPag): 0.0216 10 psig (69 kPag): 0.0227 15 psig (103.4 kPag): 0.0279 20 psig (137.9 kPag): 0.0322 30 psig (206.9 kPag): 0.0394 40 psig (275.8 kPag): 0.0455 50 psig (344.8 kPag): 0.0509 60 psig (413.7 kPag): 0.0557 70 psig (482.7 kPag): 0.0602 80 psig (551.6 kPag): 0.0643 90 psig (620.6 kPag): 0.0682 100 psig (689.5 kPag): 0.0719

Flow Data Status

 N/A Generic