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

RG4-21-SS N/A 0.021 in N/A 316 SS N/A 0.0096
RG4-22-SS N/A 0.022 in N/A 316 SS N/A 0.011
RG4-23-SS N/A 0.023 in N/A 316 SS N/A 0.012
RG4-24-SS N/A 0.024 in N/A 316 SS N/A 0.013
RG4-25-SS N/A 0.025 in N/A 316 SS N/A 0.014
RG4-26-SS N/A 0.026 in N/A 316 SS N/A 0.016
RG4-27-SS N/A 0.027 in N/A 316 SS N/A 0.017
RG4-28-SS N/A 0.028 in N/A 316 SS N/A 0.018
RG4-29-SS N/A 0.029 in N/A 316 SS N/A 0.019
RG4-31-SS N/A 0.031 in N/A 316 SS N/A 0.022
RG4-32-SS N/A 0.032 in N/A 316 SS N/A 0.024
RG4-33-SS N/A 0.033 in N/A 316 SS N/A 0.025
RG4-35-SS N/A 0.035 in N/A 316 SS N/A 0.028
RG4-37-SS N/A 0.037 in N/A 316 SS N/A 0.031
RG4-38-SS N/A 0.038 in N/A 316 SS N/A 0.032
RG4-39-SS N/A 0.039 in N/A 316 SS N/A 0.033
RG4-40-SS N/A 0.04 in N/A 316 SS N/A 0.036
RG4-41-SS N/A 0.041 in N/A 316 SS N/A 0.038
RG4-42-SS N/A 0.042 in N/A 316 SS N/A 0.039
RG4-43-SS N/A 0.043 in N/A 316 SS N/A 0.041
RG4-47-SS N/A 0.047 in N/A 316 SS N/A 0.048
RG4-52-SS N/A 0.052 in N/A 316 SS N/A 0.059
RG4-55-SS N/A 0.055 in N/A 316 SS N/A 0.068
RG4-60-SS N/A 0.06 in N/A 316 SS N/A 0.081
RG4-63-SS N/A 0.063 in N/A 316 SS N/A 0.088
Unit of Measure
1 2 3 4 5