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
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 Brass

Nominal Orifice Size

 N/A 100

CV

 N/A 0.230

Orifice Geometry

 N/A Round

Maximum Operating Pressure

 N/A 2000 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 0.1000 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: 69.8 5 psig: 150 10 psig: 196 15 psig: 235 20 psig: 275 25 psig: 316 30 psig: 356 40 psig: 439 50 psig: 523 60 psig: 606 70 psig: 693 80 psig: 778 90 psig: 860 100 psig: 951

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

 N/A 5 In. Hg.: 96.1 10 In. Hg.: 120

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

 N/A 15 In. Hg.: 125 20 In. Hg.: 125 30 In. Hg.: 125

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

 N/A 1 psig (6.9 kPag): 32.9 5 psig (34.5 kPag): 70.8 10 psig (69.0 kPag): 92.3 15 psig (103.4 kPag): 111 20 psig (137.9 kPag): 130 25 psig (172.4 kPag): 149 30 psig (206.9 kPag): 168 40 psig (275.8 kPag): 207 50 psig (344.8 kPag): 247 60 psig (413.7 kPag): 286 70 psig (482.7 kPag): 327 80 psig (551.6 kPag): 367 90 psig (620.6 kPag): 406 100 psig (689.5 kPag): 449

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

 N/A 5 In. Hg. (127 Mm. Hg.): 45.3 10 In. Hg. (254 Mm. Hg.): 56.6

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

 N/A 15 In. Hg. (381 Mm. Hg.): 59 20 In. Hg. (508 Mm. Hg.): 59 30 In. Hg. (762 Mm. Hg.): 59

Water Flow - Gallons/minute (GPM)

 N/A 1 psig: 0.230 2 psig: 0.325 3 psig: 0.398 4 psig: 0.460 5 psig: 0.514 6 psig: 0.563 7 psig: 0.609 8 psig: 0.651 9 psig: 0.690 10 psig: 0.727 15 psig: 0.891 20 psig: 1.029 30 psig: 1.260 40 psig: 1.455 50 psig: 1.626 60 psig: 1.782 70 psig: 1.924 80 psig: 2.057 90 psig: 2.182 100 psig: 2.300

Water Flow - Liters/minute (LPM)

 N/A 1 psig (6.9 kPag): 0.871 2 psig (13.8 kPag): 1.231 3 psig (20.7 kPag): 1.508 4 psig (27.6 kPag): 1.741 5 psig (34.5 kPag): 1.947 6 psig (41.4 kPag): 2.133 7 psig (48.3 kPag): 2.304 8 psig (55.2 kPag): 2.463 9 psig (62.1 kPag): 2.612 10 psig (69 kPag): 2.753 15 psig (103.4 kPag): 3.372 20 psig (137.9 kPag): 3.894 30 psig (206.9 kPag): 4.769 40 psig (275.8 kPag): 5.506 50 psig (344.8 kPag): 6.156 60 psig (413.7 kPag): 6.744 70 psig (482.7 kPag): 7.284 80 psig (551.6 kPag): 7.787 90 psig (620.6 kPag): 8.260 100 psig (689.5 kPag): 8.706

Flow Data Status

 N/A Generic