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    Precision orifice assemblies that adapt to common fittings used in process instruments and hydraulic systems are shown.
Unit of Measure

Material

 N/A 303 SS

Nominal Orifice Size

 N/A 39

CV

 N/A 0.033

Maximum Operating Pressure

 N/A 4000 psig

Connection A

 N/A SAE 37 DEG #4 7/16"-20 Male

Connection B

 N/A SAE 37 DEG #4 7/16"-20 Female

Screened

 N/A None

Orifice Diameter

 N/A 0.039 in

Orifice Diameter Accuracy

 N/A ±0.0005 in

Width Across Flats (Hex)

 N/A 9/16 in

Total Length

 N/A 1.14 in

Hex Height

 N/A 0.600 in

N/A

    Type K4 is a 1/4" OD Tube and is suitable for use with a wide variety of compression fittings.Type K2 is for 1/8" OD Tube fittings.Types R4 and RG4 are suitable for use with face seal fittings. Types BFS and CFJ are used in hydraulic circuits, having SAE flare connections.

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: 9.45 5 psig: 20.6 10 psig: 28.8 15 psig: 35.4 20 psig: 41.5 25 psig: 47.9 30 psig: 54.2 40 psig: 67.0 50 psig: 79.7 60 psig: 92.8 70 psig: 106 80 psig: 119 90 psig: 132 100 psig: 146

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

 N/A 5 In. Hg.: 13.3 10 In. Hg.: 16.6

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

 N/A 15 In. Hg.: 17.4 20 In. Hg.: 17.4 30 In. Hg.: 17.4

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

 N/A 1 psig (6.9 kPag): 4.46 5 psig (34.5 kPag): 9.7 10 psig (69.0 kPag): 13.6 15 psig (103.4 kPag): 16.7 20 psig (137.9 kPag): 19.6 25 psig (172.4 kPag): 22.6 30 psig (206.9 kPag): 25.6 40 psig (275.8 kPag): 31.6 50 psig (344.8 kPag): 37.6 60 psig (413.7 kPag): 43.8 70 psig (482.7 kPag): 50 80 psig (551.6 kPag): 56.2 90 psig (620.6 kPag): 62.4 100 psig (689.5 kPag): 68.7

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

 N/A 5 In. Hg. (127 Mm. Hg.): 6.29 10 In. Hg. (254 Mm. Hg.): 7.85

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

 N/A 15 In. Hg. (381 Mm. Hg.): 8.22 20 In. Hg. (508 Mm. Hg.): 8.22 30 In. Hg. (762 Mm. Hg.): 8.22

Water Flow - Gallons/minute (GPM)

 N/A 1 psig: 0.033 2 psig: 0.047 3 psig: 0.057 4 psig: 0.066 5 psig: 0.074 6 psig: 0.081 7 psig: 0.087 8 psig: 0.093 9 psig: 0.099 10 psig: 0.104 15 psig: 0.128 20 psig: 0.148 30 psig: 0.181 40 psig: 0.209 50 psig: 0.233 60 psig: 0.256 70 psig: 0.276 80 psig: 0.295 90 psig: 0.313 100 psig: 0.330

Water Flow - Liters/minute (LPM)

 N/A 1 psig (6.9 kPag): 0.125 2 psig (13.8 kPag): 0.177 3 psig (20.7 kPag): 0.216 4 psig (27.6 kPag): 0.250 5 psig (34.5 kPag): 0.279 6 psig (41.4 kPag): 0.306 7 psig (48.3 kPag): 0.331 8 psig (55.2 kPag): 0.353 9 psig (62.1 kPag): 0.375 10 psig (69 kPag): 0.395 15 psig (103.4 kPag): 0.484 20 psig (137.9 kPag): 0.559 30 psig (206.9 kPag): 0.684 40 psig (275.8 kPag): 0.79 50 psig (344.8 kPag): 0.883 60 psig (413.7 kPag): 0.968 70 psig (482.7 kPag): 1.045 80 psig (551.6 kPag): 1.117 90 psig (620.6 kPag): 1.185 100 psig (689.5 kPag): 1.249

Flow Data Status

 N/A Generic