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Unit of Measure

Flow Direction

 N/A Metal Orifice Assemblies can be used for flow in either direction. The Air Flow and Water Flow data is for a flow direction as shown in the product images.

Material

 N/A 303 SS

Nominal Orifice Size

 N/A 120

CV

 N/A 0.340

Orifice Geometry

 N/A Round

Maximum Operating Pressure

 N/A 4000 psig

Connection A

 N/A 3/8" NPT Male

Connection B

 N/A 3/8" NPT Male

Screened

 N/A None

N/A

  • Precision Flow Control – Gases or Liquids
  • Speed Controls – Cylinders and Actuators
  • Accurate Timing in Pneumatic or Hydraulic Circuits
  • Flow Restriction
  • Accurate Throttling
  • Snubbers - Gages and Instruments
  • Ultrasonic Sound Sources

N/A

  • High Pressure Capability
  • Bi-directional Flow Compatibility
  • Economical Precision Orifice
  • Repeatable Orifice Size and Shape
  • Predictable Flow Rate

Air Flow Notes

 N/A Standard Conditions 70°F, 14.7 psia
SCFH – Standard Cu. Ft. Per Hour
SLPM – Standard Liters Per Minute
The Metal Orifice Air Flow data obtained with Type B restrictor.
Flow rates for other metal restrictors are essentially the same as for Type B.
The Metal Orifice Air Flow data supercedes previous publications.

Water Flow Notes

 N/A The Metal Orifice Water Flow data calculated based on the Cv for each orifice. Flow = Cv √ΔP. ΔP = differential pressure in psid. It is assumed that the region on either side of the orifice is fully flooded with no air pockets.

Orifice Diameter

 N/A 0.1200 in

Width Across Flats (Hex)

 N/A 11/16 in

Total Length

 N/A 1.47 in

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

 N/A 1 psig: 101 5 psig: 216 10 psig: 286 15 psig: 345 20 psig: 403 25 psig: 464 30 psig: 525 40 psig: 648 50 psig: 771 60 psig: 894 70 psig: 1021 80 psig: 1146 90 psig: 1267 100 psig: 1403

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

 N/A 5 In. Hg.: 138 10 In. Hg.: 173

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

 N/A 15 In. Hg.: 180 20 In. Hg.: 180 30 In. Hg.: 180

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

 N/A 1 psig (6.9 kPag): 47.8 5 psig (34.5 kPag): 102 10 psig (69.0 kPag): 135 15 psig (103.4 kPag): 163 20 psig (137.9 kPag): 190 25 psig (172.4 kPag): 219 30 psig (206.9 kPag): 248 40 psig (275.8 kPag): 306 50 psig (344.8 kPag): 364 60 psig (413.7 kPag): 422 70 psig (482.7 kPag): 482 80 psig (551.6 kPag): 541 90 psig (620.6 kPag): 598 100 psig (689.5 kPag): 662

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

 N/A 5 In. Hg. (127 Mm. Hg.): 65.3 10 In. Hg. (254 Mm. Hg.): 81.4

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

 N/A 15 In. Hg. (381 Mm. Hg.): 84.9 20 In. Hg. (508 Mm. Hg.): 84.9 30 In. Hg. (762 Mm. Hg.): 84.9

Water Flow - Gallons/minute (GPM)

 N/A 1 psig: 0.340 2 psig: 0.481 3 psig: 0.589 4 psig: 0.680 5 psig: 0.760 6 psig: 0.833 7 psig: 0.900 8 psig: 0.962 9 psig: 1.020 10 psig: 1.075 15 psig: 1.317 20 psig: 1.521 30 psig: 1.862 40 psig: 2.150 50 psig: 2.404 60 psig: 2.634 70 psig: 2.845 80 psig: 3.041 90 psig: 3.226 100 psig: 3.400

Water Flow - Liters/minute (LPM)

 N/A 1 psig (6.9 kPag): 1.287 2 psig (13.8 kPag): 1.820 3 psig (20.7 kPag): 2.229 4 psig (27.6 kPag): 2.574 5 psig (34.5 kPag): 2.878 6 psig (41.4 kPag): 3.153 7 psig (48.3 kPag): 3.405 8 psig (55.2 kPag): 3.64 9 psig (62.1 kPag): 3.861 10 psig (69 kPag): 4.070 15 psig (103.4 kPag): 4.985 20 psig (137.9 kPag): 5.756 30 psig (206.9 kPag): 7.049 40 psig (275.8 kPag): 8.140 50 psig (344.8 kPag): 9.101 60 psig (413.7 kPag): 9.969 70 psig (482.7 kPag): 10.768 80 psig (551.6 kPag): 11.512 90 psig (620.6 kPag): 12.210 100 psig (689.5 kPag): 12.870

Flow Data Status

 N/A Generic