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
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Unit of Measure

Specifications

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 60

CV

 N/A 0.081

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

Application

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

Advantages

N/A

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

Air Flow Notes

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

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.

Dimensions

Orifice Diameter

 N/A 0.06 in

Width Across Flats (Hex)

 N/A 11/16 in

Total Length

 N/A 1.47 in

Flow Data

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

 N/A 1 psig: 23.7 5 psig: 50.6 10 psig: 68.2 15 psig: 82.6 20 psig: 97.3 25 psig: 112 30 psig: 126 40 psig: 156 50 psig: 185 60 psig: 214 70 psig: 244 80 psig: 273 90 psig: 303 100 psig: 331

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

 N/A 5 In. Hg.: 31.4 10 In. Hg.: 38.6

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

 N/A 15 In. Hg.: 39.4 20 In. Hg.: 39.4 30 In. Hg.: 39.4

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

 N/A 1 psig (6.9 kPag): 11.2 5 psig (34.5 kPag): 23.9 10 psig (69.0 kPag): 32.2 15 psig (103.4 kPag): 39 20 psig (137.9 kPag): 45.9 25 psig (172.4 kPag): 52.8 30 psig (206.9 kPag): 59.7 40 psig (275.8 kPag): 73.6 50 psig (344.8 kPag): 87.4 60 psig (413.7 kPag): 101 70 psig (482.7 kPag): 115 80 psig (551.6 kPag): 129 90 psig (620.6 kPag): 143 100 psig (689.5 kPag): 156

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

 N/A 5 In. Hg. (127 Mm. Hg.): 14.8 10 In. Hg. (254 Mm. Hg.): 18.2

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

 N/A 15 In. Hg. (381 Mm. Hg.): 18.6 20 In. Hg. (508 Mm. Hg.): 18.6 30 In. Hg. (762 Mm. Hg.): 18.6

Water Flow - Gallons/minute (GPM)

 N/A 1 psig: 0.081 2 psig: 0.115 3 psig: 0.140 4 psig: 0.162 5 psig: 0.181 6 psig: 0.198 7 psig: 0.214 8 psig: 0.229 9 psig: 0.243 10 psig: 0.256 15 psig: 0.314 20 psig: 0.362 30 psig: 0.444 40 psig: 0.512 50 psig: 0.573 60 psig: 0.627 70 psig: 0.678 80 psig: 0.724 90 psig: 0.768 100 psig: 0.810

Water Flow - Liters/minute (LPM)

 N/A 1 psig (6.9 kPag): 0.307 2 psig (13.8 kPag): 0.434 3 psig (20.7 kPag): 0.531 4 psig (27.6 kPag): 0.613 5 psig (34.5 kPag): 0.686 6 psig (41.4 kPag): 0.751 7 psig (48.3 kPag): 0.811 8 psig (55.2 kPag): 0.867 9 psig (62.1 kPag): 0.920 10 psig (69 kPag): 0.970 15 psig (103.4 kPag): 1.188 20 psig (137.9 kPag): 1.371 30 psig (206.9 kPag): 1.679 40 psig (275.8 kPag): 1.939 50 psig (344.8 kPag): 2.168 60 psig (413.7 kPag): 2.375 70 psig (482.7 kPag): 2.565 80 psig (551.6 kPag): 2.742 90 psig (620.6 kPag): 2.909 100 psig (689.5 kPag): 3.066

Flow Data Status

 N/A Generic