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    Precision orifice assemblies that adapt to common fittings used in process instruments and hydraulic systems are shown. Types K4, R4 and RG4 are used with nominal 1/4" tube fittings. Type BFS is for 45° flare fittings and Type CFJ is for 37° flare fittings. Type OD is a pipe adapter.
Unit of Measure

Orifice Diameter

 N/A 0.0079 in

Outside Diameter

 N/A 0.47 in

Width

 N/A 0.030 in

Material

 N/A 316 SS

Nominal Orifice Size

 N/A 8

CV

 N/A 0.0015

Finish

 N/A Silver Plated

Maximum Operating Pressure

 N/A 100 psig

Connection A

 N/A 1/4" Face Seal

N/A

  • Types R4 and RG4 are suitable for use with face seal fittings.

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: 0.36 5 psig: 0.85 10 psig: 1.21 15 psig: 1.53 20 psig: 1.80 25 psig: 2.08 30 psig: 2.37 40 psig: 2.92 50 psig: 3.50 60 psig: 4.05 70 psig: 4.60 80 psig: 5.15 90 psig: 5.70 100 psig: 6.25

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

 N/A 5 In. Hg.: 0.536 10 In. Hg.: 0.687

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

 N/A 15 In. Hg.: 0.744 20 In. Hg.: 0.744 30 In. Hg.: 0.744

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

 N/A 1 psig (6.9 kPag): 0.170 5 psig (34.5 kPag): 0.40 10 psig (69.0 kPag): 0.57 15 psig (103.4 kPag): 0.72 20 psig (137.9 kPag): 0.85 25 psig (172.4 kPag): 0.98 30 psig (206.9 kPag): 1.12 40 psig (275.8 kPag): 1.38 50 psig (344.8 kPag): 1.65 60 psig (413.7 kPag): 1.91 70 psig (482.7 kPag): 2.17 80 psig (551.6 kPag): 2.43 90 psig (620.6 kPag): 2.69 100 psig (689.5 kPag): 2.95

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

 N/A 5 In. Hg. (127 Mm. Hg.): 0.253 10 In. Hg. (254 Mm. Hg.): 0.324

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

 N/A 15 In. Hg. (381 Mm. Hg.): 0.351 20 In. Hg. (508 Mm. Hg.): 0.351 30 In. Hg. (762 Mm. Hg.): 0.351

Water Flow - Gallons/minute (GPM)

 N/A 1 psig: 0.0015 2 psig: 0.0021 3 psig: 0.0026 4 psig: 0.0030 5 psig: 0.0034 6 psig: 0.0037 7 psig: 0.0040 8 psig: 0.0042 9 psig: 0.0045 10 psig: 0.0047 15 psig: 0.0058 20 psig: 0.0067 30 psig: 0.0082 40 psig: 0.0095 50 psig: 0.0106 60 psig: 0.0116 70 psig: 0.0125 80 psig: 0.0134 90 psig: 0.0142 100 psig: 0.0150

Water Flow - Liters/minute (LPM)

 N/A 1 psig (6.9 kPag): 0.0057 2 psig (13.8 kPag): 0.0080 3 psig (20.7 kPag): 0.0098 4 psig (27.6 kPag): 0.0114 5 psig (34.5 kPag): 0.0127 6 psig (41.4 kPag): 0.0127 7 psig (48.3 kPag): 0.0150 8 psig (55.2 kPag): 0.0161 9 psig (62.1 kPag): 0.0170 10 psig (69 kPag): 0.0180 15 psig (103.4 kPag): 0.0220 20 psig (137.9 kPag): 0.0254 30 psig (206.9 kPag): 0.0311 40 psig (275.8 kPag): 0.0359 50 psig (344.8 kPag): 0.0402 60 psig (413.7 kPag): 0.0440 70 psig (482.7 kPag): 0.0475 80 psig (551.6 kPag): 0.0508 90 psig (620.6 kPag): 0.0539 100 psig (689.5 kPag): 0.0568

Flow Data Status

 N/A Generic