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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 0.017 in

Outside Diameter

 N/A 0.50 in

Width

 N/A 0.030 in

Material

 N/A 316 SS

Nominal Orifice Size

 N/A 17

CV

 N/A 0.0067

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: 1.64 5 psig: 3.73 10 psig: 4.79 15 psig: 6.04 20 psig: 7.20 25 psig: 8.31 30 psig: 9.39 40 psig: 11.6 50 psig: 13.8 60 psig: 16.0 70 psig: 18.2 80 psig: 20.5 90 psig: 22.7 100 psig: 25.0

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

 N/A 5 In. Hg.: 2.41 10 In. Hg.: 2.99

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

 N/A 15 In. Hg.: 3.28 20 In. Hg.: 3.28 30 In. Hg.: 3.28

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

 N/A 1 psig (6.9 kPag): 0.77 5 psig (34.5 kPag): 1.76 10 psig (69.0 kPag): 2.26 15 psig (103.4 kPag): 2.85 20 psig (137.9 kPag): 3.40 25 psig (172.4 kPag): 3.92 30 psig (206.9 kPag): 4.43 40 psig (275.8 kPag): 5.47 50 psig (344.8 kPag): 6.51 60 psig (413.7 kPag): 7.56 70 psig (482.7 kPag): 8.61 80 psig (551.6 kPag): 9.67 90 psig (620.6 kPag): 10.7 100 psig (689.5 kPag): 11.8

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

 N/A 5 In. Hg. (127 Mm. Hg.): 1.14 10 In. Hg. (254 Mm. Hg.): 1.41

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

 N/A 15 In. Hg. (381 Mm. Hg.): 1.55 20 In. Hg. (508 Mm. Hg.): 1.55 30 In. Hg. (762 Mm. Hg.): 1.55

Water Flow - Gallons/minute (GPM)

 N/A 1 psig: 0.0067 2 psig: 0.0095 3 psig: 0.0116 4 psig: 0.0134 5 psig: 0.0150 6 psig: 0.0164 7 psig: 0.0177 8 psig: 0.0190 9 psig: 0.0201 10 psig: 0.0212 15 psig: 0.0259 20 psig: 0.0300 30 psig: 0.0367 40 psig: 0.0424 50 psig: 0.0474 60 psig: 0.0519 70 psig: 0.0561 80 psig: 0.0599 90 psig: 0.0636 100 psig: 0.0670

Water Flow - Liters/minute (LPM)

 N/A 1 psig (6.9 kPag): 0.0254 2 psig (13.8 kPag): 0.0359 3 psig (20.7 kPag): 0.0439 4 psig (27.6 kPag): 0.0507 5 psig (34.5 kPag): 0.0567 6 psig (41.4 kPag): 0.0567 7 psig (48.3 kPag): 0.0671 8 psig (55.2 kPag): 0.0717 9 psig (62.1 kPag): 0.0761 10 psig (69 kPag): 0.0802 15 psig (103.4 kPag): 0.0982 20 psig (137.9 kPag): 0.1134 30 psig (206.9 kPag): 0.1389 40 psig (275.8 kPag): 0.1604 50 psig (344.8 kPag): 0.1793 60 psig (413.7 kPag): 0.1965 70 psig (482.7 kPag): 0.2122 80 psig (551.6 kPag): 0.2268 90 psig (620.6 kPag): 0.2406 100 psig (689.5 kPag): 0.2536

Flow Data Status

 N/A Generic