O’Keefe Controls Co.
O’Keefe Controls Co.
4 Maple Drive
Monroe, CT 06468
Phone: 203.261.6711
Email: info@okeefecontrols.com • Website: www.okeefecontrols.com
Print Back
    One-piece construction of solid metal is employed. Orifices are accurately machined, thoroughly cleaned, and flow tested to exacting standards. Sizes range from .004" to .125" orifice diameter. Special sizes can be made to order.
Unit of Measure

Specifications

Material

 N/A Brass

Nominal Orifice Size

 N/A 81

CV

 N/A 0.150

Maximum Operating Pressure

 N/A 2000 psig

Connection A

 N/A 1/4" NPT Male

Connection B

 N/A 1/4" NPT Female

Screened

 N/A None

Application

N/A

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

Dimensions

Orifice Diameter

 N/A 0.0810 in

Orifice Diameter Accuracy

 N/A ±0.0005 in

Width Across Flats (Hex)

 N/A 3/4 in

Total Length

 N/A 1.25 in

Flow Data

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

 N/A 1 psig: 46.0 5 psig: 97.5 10 psig: 131 15 psig: 158 20 psig: 185 25 psig: 212 30 psig: 239 40 psig: 295 50 psig: 347 60 psig: 400 70 psig: 458 80 psig: 513 90 psig: 568 100 psig: 627

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

 N/A 5 In. Hg.: 64 10 In. Hg.: 79.9

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

 N/A 15 In. Hg.: 83.5 20 In. Hg.: 83.5 30 In. Hg.: 83.5

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

 N/A 1 psig (6.9 kPag): 21.7 5 psig (34.5 kPag): 46 10 psig (69.0 kPag): 61.6 15 psig (103.4 kPag): 74.5 20 psig (137.9 kPag): 87.3 25 psig (172.4 kPag): 100 30 psig (206.9 kPag): 113 40 psig (275.8 kPag): 139 50 psig (344.8 kPag): 164 60 psig (413.7 kPag): 189 70 psig (482.7 kPag): 216 80 psig (551.6 kPag): 242 90 psig (620.6 kPag): 268 100 psig (689.5 kPag): 296

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

 N/A 5 In. Hg. (127 Mm. Hg.): 30.2 10 In. Hg. (254 Mm. Hg.): 37.7

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

 N/A 15 In. Hg. (381 Mm. Hg.): 39.4 20 In. Hg. (508 Mm. Hg.): 39.4 30 In. Hg. (762 Mm. Hg.): 39.4

Water Flow - Gallons/minute (GPM)

 N/A 1 psig: 0.150 2 psig: 0.212 3 psig: 0.260 4 psig: 0.300 5 psig: 0.335 6 psig: 0.367 7 psig: 0.397 8 psig: 0.424 9 psig: 0.450 10 psig: 0.474 15 psig: 0.581 20 psig: 0.671 30 psig: 0.822 40 psig: 0.949 50 psig: 1.061 60 psig: 1.162 70 psig: 1.255 80 psig: 1.342 90 psig: 1.423 100 psig: 1.500

Water Flow - Liters/minute (LPM)

 N/A 1 psig (6.9 kPag): 0.568 2 psig (13.8 kPag): 0.803 3 psig (20.7 kPag): 0.983 4 psig (27.6 kPag): 1.136 5 psig (34.5 kPag): 1.27 6 psig (41.4 kPag): 1.391 7 psig (48.3 kPag): 1.502 8 psig (55.2 kPag): 1.606 9 psig (62.1 kPag): 1.703 10 psig (69 kPag): 1.796 15 psig (103.4 kPag): 2.199 20 psig (137.9 kPag): 2.539 30 psig (206.9 kPag): 3.110 40 psig (275.8 kPag): 3.591 50 psig (344.8 kPag): 4.015 60 psig (413.7 kPag): 4.398 70 psig (482.7 kPag): 4.751 80 psig (551.6 kPag): 5.079 90 psig (620.6 kPag): 5.387 100 psig (689.5 kPag): 5.678

Flow Data Status

 N/A Generic