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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    Precision orifice assemblies that adapt to common fittings used in process instruments and hydraulic systems are shown. Types K4, R4 and RG4 are used with nominal 1/4" tube fittings. Type BFS is for 45° flare fittings and Type CFJ is for 37° flare fittings. Type OD is a pipe adapter.
Precision Metal Orifices VCR Gaskets
Precision Metal Orifices - VCR Gaskets - Line Drawing
Unit of Measure
1 2 3 4 5 

Part Number

Orifice Diameter

Material

CV

R4-4-SS N/A 0.0039 in N/A 316 SS N/A 0.00035
R4-5-SS N/A 0.0051 in N/A 316 SS N/A 0.00061
R4-6-SS N/A 0.0059 in N/A 316 SS N/A 0.00086
R4-7-SS N/A 0.0071 in N/A 316 SS N/A 0.0012
R4-8-SS N/A 0.0079 in N/A 316 SS N/A 0.0015
R4-9-SS N/A 0.0091 in N/A 316 SS N/A 0.0019
R4-10-SS N/A 0.0102 in N/A 316 SS N/A 0.0025
R4-11-SS N/A 0.011 in N/A 316 SS N/A 0.0028
R4-12-SS N/A 0.0122 in N/A 316 SS N/A 0.0034
R4-13-SS N/A 0.013 in N/A 316 SS N/A 0.0038
R4-14-SS N/A 0.0142 in N/A 316 SS N/A 0.0043
R4-15-SS N/A 0.015 in N/A 316 SS N/A 0.005
R4-16-SS N/A 0.016 in N/A 316 SS N/A 0.0055
R4-17-SS N/A 0.017 in N/A 316 SS N/A 0.0067
R4-18-SS N/A 0.018 in N/A 316 SS N/A 0.0073
R4-19-SS N/A 0.019 in N/A 316 SS N/A 0.008
R4-20-SS N/A 0.02 in N/A 316 SS N/A 0.0088
R4-21-SS N/A 0.021 in N/A 316 SS N/A 0.0096
R4-22-SS N/A 0.022 in N/A 316 SS N/A 0.011
R4-23-SS N/A 0.023 in N/A 316 SS N/A 0.012
R4-24-SS N/A 0.024 in N/A 316 SS N/A 0.013
R4-25-SS N/A 0.025 in N/A 316 SS N/A 0.014
R4-26-SS N/A 0.026 in N/A 316 SS N/A 0.016
R4-27-SS N/A 0.027 in N/A 316 SS N/A 0.017
R4-28-SS N/A 0.028 in N/A 316 SS N/A 0.018
Unit of Measure
1 2 3 4 5