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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 Brass

Nominal Orifice Size

 N/A 33

CV

 N/A 0.025

Maximum Operating Pressure

 N/A 2000 psig

Taper

 N/A 45 º

Connection A

 N/A 1/8" NPT Male

Connection B

 N/A SAE 45 DEG #4 7/16"-20 Male

Screened

 N/A Screened

Orifice Diameter

 N/A 0.033 in

Orifice Diameter Accuracy

 N/A ±0.0005 in

Width Across Flats (Hex)

 N/A 7/16 in

Total Length

 N/A 1.04 in

N/A

    The integral screen/orifice assembly provides a compact arrangement. All types on this page The screen is located upstream of the orifice and protects against particles carried by the pressurized fluid. For protection against contamination in reverse flow situations add an external screen downstream of the orifice.

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: 6.42 5 psig: 14.4 10 psig: 21.1 15 psig: 26.1 20 psig: 30.3 25 psig: 34.5 30 psig: 39.0 40 psig: 47.7 50 psig: 56.4 60 psig: 65.0 70 psig: 73.9 80 psig: 82.6 90 psig: 91.5 100 psig: 101

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

 N/A 5 In. Hg.: 9.15 10 In. Hg.: 11.5

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

 N/A 15 In. Hg.: 12.1 20 In. Hg.: 12.1 30 In. Hg.: 12.1

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

 N/A 1 psig (6.9 kPag): 3.03 5 psig (34.5 kPag): 6.80 10 psig (69.0 kPag): 9.98 15 psig (103.4 kPag): 12.3 20 psig (137.9 kPag): 14.3 25 psig (172.4 kPag): 16.3 30 psig (206.9 kPag): 18.4 40 psig (275.8 kPag): 22.5 50 psig (344.8 kPag): 26.6 60 psig (413.7 kPag): 30.7 70 psig (482.7 kPag): 34.9 80 psig (551.6 kPag): 39.0 90 psig (620.6 kPag): 43.2 100 psig (689.5 kPag): 47.5

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

 N/A 5 In. Hg. (127 Mm. Hg.): 4.32 10 In. Hg. (254 Mm. Hg.): 5.43

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

 N/A 15 In. Hg. (381 Mm. Hg.): 5.72 20 In. Hg. (508 Mm. Hg.): 5.72 30 In. Hg. (762 Mm. Hg.): 5.72

Water Flow - Gallons/minute (GPM)

 N/A 1 psig: 0.025 2 psig: 0.035 3 psig: 0.043 4 psig: 0.050 5 psig: 0.056 6 psig: 0.061 7 psig: 0.066 8 psig: 0.071 9 psig: 0.075 10 psig: 0.079 15 psig: 0.097 20 psig: 0.112 30 psig: 0.137 40 psig: 0.158 50 psig: 0.177 60 psig: 0.194 70 psig: 0.209 80 psig: 0.224 90 psig: 0.237 100 psig: 0.250

Water Flow - Liters/minute (LPM)

 N/A 1 psig (6.9 kPag): 0.095 2 psig (13.8 kPag): 0.134 3 psig (20.7 kPag): 0.164 4 psig (27.6 kPag): 0.189 5 psig (34.5 kPag): 0.212 6 psig (41.4 kPag): 0.212 7 psig (48.3 kPag): 0.250 8 psig (55.2 kPag): 0.268 9 psig (62.1 kPag): 0.284 10 psig (69 kPag): 0.299 15 psig (103.4 kPag): 0.367 20 psig (137.9 kPag): 0.423 30 psig (206.9 kPag): 0.518 40 psig (275.8 kPag): 0.599 50 psig (344.8 kPag): 0.669 60 psig (413.7 kPag): 0.733 70 psig (482.7 kPag): 0.792 80 psig (551.6 kPag): 0.846 90 psig (620.6 kPag): 0.898 100 psig (689.5 kPag): 0.946

Flow Data Status

 N/A Generic