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    This type precision orifice includes an o-ring for sealing against a flat surface. The set screw style can be installed in fittings, manifolds and custom parts for accurate flow rate control of liquids or gases.
Unit of Measure

Specifications

Seal Material

Viton

Material

Brass

Nominal Orifice Size

28

CV

0.018

Maximum Temperature

300 ºF

Maximum Operating Pressure

200 psig

Maximum Opening Diameter

0.047 in

Connection A

6-32 UNC Threaded Insert O-ring seal

Screened

None

Dimensions

Orifice Diameter

0.028 in

Thread Size

6/32

Width Across Flats (Hex)

1/16 in

Total Length

0.310 in

Orifice Diameter Accuracy

±0.0005 in

Flow Data

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

1 psig: 4.68 5 psig: 10.5 10 psig: 15.2 15 psig: 18.6 20 psig: 21.8 25 psig: 24.8 30 psig: 28.0 40 psig: 34.1 50 psig: 40.3 60 psig: 46.4 70 psig: 52.5 80 psig: 58.7 90 psig: 65.0 100 psig: 71.4

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

5 In. Hg.: 6.7 10 In. Hg.: 8.48

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

15 In. Hg.: 8.90 20 In. Hg.: 8.9 30 In. Hg.: 8.90

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

1 psig (6.9 kPag): 2.21 5 psig (34.5 kPag): 4.94 10 psig (69.0 kPag): 7.18 15 psig (103.4 kPag): 8.78 20 psig (137.9 kPag): 10.3 25 psig (172.4 kPag): 11.7 30 psig (206.9 kPag): 13.2 40 psig (275.8 kPag): 16.1 50 psig (344.8 kPag): 19.0 60 psig (413.7 kPag): 21.9 70 psig (482.7 kPag): 24.8 80 psig (551.6 kPag): 27.7 90 psig (620.6 kPag): 30.7 100 psig (689.5 kPag): 33.7

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

5 In. Hg. (127 Mm. Hg.): 3.16 10 In. Hg. (254 Mm. Hg.): 4.00

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

15 In. Hg. (381 Mm. Hg.): 4.20 20 In. Hg. (508 Mm. Hg.): 4.20 30 In. Hg. (762 Mm. Hg.): 4.20

Water Flow - Gallons/minute (GPM)

1 psig: 0.018 2 psig: 0.025 3 psig: 0.031 4 psig: 0.036 5 psig: 0.040 6 psig: 0.044 7 psig: 0.048 8 psig: 0.051 9 psig: 0.054 10 psig: 0.057 15 psig: 0.070 20 psig: 0.080 30 psig: 0.099 40 psig: 0.114 50 psig: 0.127 60 psig: 0.139 70 psig: 0.151 80 psig: 0.161 90 psig: 0.171 100 psig: 0.180

Water Flow - Liters/minute (LPM)

1 psig (6.9 kPag): 0.068 2 psig (13.8 kPag): 0.096 3 psig (20.7 kPag): 0.118 4 psig (27.6 kPag): 0.136 5 psig (34.5 kPag): 0.152 6 psig (41.4 kPag): 0.152 7 psig (48.3 kPag): 0.180 8 psig (55.2 kPag): 0.193 9 psig (62.1 kPag): 0.204 10 psig (69 kPag): 0.215 15 psig (103.4 kPag): 0.264 20 psig (137.9 kPag): 0.305 30 psig (206.9 kPag): 0.373 40 psig (275.8 kPag): 0.431 50 psig (344.8 kPag): 0.482 60 psig (413.7 kPag): 0.528 70 psig (482.7 kPag): 0.570 80 psig (551.6 kPag): 0.609 90 psig (620.6 kPag): 0.646 100 psig (689.5 kPag): 0.681

Flow Data Status

Generic