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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 19

CV

 N/A 0.008

Maximum Operating Pressure

 N/A 4000 psig

Connection A

 N/A SAE 37 DEG #8 3/4"-16 Male

Connection B

 N/A SAE 37 DEG #8 3/4"-16 Female

Screened

 N/A None

Orifice Diameter

 N/A 0.019 in

Orifice Diameter Accuracy

 N/A ±0.0005 in

Width Across Flats (Hex)

 N/A 7/8 in

Total Length

 N/A 1.36 in

Hex Height

 N/A 0.710 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: 2.03 5 psig: 4.70 10 psig: 6.00 15 psig: 7.56 20 psig: 9.03 25 psig: 10.4 30 psig: 11.8 40 psig: 14.5 50 psig: 17.3 60 psig: 20.0 70 psig: 22.9 80 psig: 25.6 90 psig: 28.4 100 psig: 31.1

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

 N/A 5 In. Hg.: 2.99 10 In. Hg.: 3.79

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

 N/A 15 In. Hg.: 4.11 20 In. Hg.: 4.11 30 In. Hg.: 4.11

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

 N/A 1 psig (6.9 kPag): 0.96 5 psig (34.5 kPag): 2.22 10 psig (69.0 kPag): 2.83 15 psig (103.4 kPag): 3.57 20 psig (137.9 kPag): 4.26 25 psig (172.4 kPag): 4.91 30 psig (206.9 kPag): 5.56 40 psig (275.8 kPag): 6.85 50 psig (344.8 kPag): 8.15 60 psig (413.7 kPag): 9.46 70 psig (482.7 kPag): 10.8 80 psig (551.6 kPag): 12.1 90 psig (620.6 kPag): 13.4 100 psig (689.5 kPag): 14.7

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

 N/A 5 In. Hg. (127 Mm. Hg.): 1.41 10 In. Hg. (254 Mm. Hg.): 1.79

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

 N/A 15 In. Hg. (381 Mm. Hg.): 1.94 20 In. Hg. (508 Mm. Hg.): 1.94 30 In. Hg. (762 Mm. Hg.): 1.94

Water Flow - Gallons/minute (GPM)

 N/A 1 psig: 0.0080 2 psig: 0.0113 3 psig: 0.0139 4 psig: 0.0160 5 psig: 0.0179 6 psig: 0.0196 7 psig: 0.0212 8 psig: 0.0226 9 psig: 0.0240 10 psig: 0.0253 15 psig: 0.0310 20 psig: 0.0358 30 psig: 0.0438 40 psig: 0.0506 50 psig: 0.0566 60 psig: 0.0620 70 psig: 0.0669 80 psig: 0.0716 90 psig: 0.0759 100 psig: 0.0800

Water Flow - Liters/minute (LPM)

 N/A 1 psig (6.9 kPag): 0.0303 2 psig (13.8 kPag): 0.0428 3 psig (20.7 kPag): 0.0525 4 psig (27.6 kPag): 0.0606 5 psig (34.5 kPag): 0.0677 6 psig (41.4 kPag): 0.0677 7 psig (48.3 kPag): 0.0801 8 psig (55.2 kPag): 0.0857 9 psig (62.1 kPag): 0.0908 10 psig (69 kPag): 0.0958 15 psig (103.4 kPag): 0.1173 20 psig (137.9 kPag): 0.1354 30 psig (206.9 kPag): 0.1659 40 psig (275.8 kPag): 0.1915 50 psig (344.8 kPag): 0.2141 60 psig (413.7 kPag): 0.2346 70 psig (482.7 kPag): 0.2534 80 psig (551.6 kPag): 0.2709 90 psig (620.6 kPag): 0.2873 100 psig (689.5 kPag): 0.3028

Flow Data Status

 N/A Generic