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

Engineered for high-performance fluid control, the R4 and RG4 series combine a precision orifice with a robust metal gasket, purpose-built for face seal fittings. Choose from premium material options—including stainless steel or nickel, with or without silver plating—to match your exact chemical, pressure, and temperature requirements. These orifices deliver reliable, leak-tight performance where accuracy and durability matter most.  The RG4 is equipped with a gasket retainer, making resuse or replacement much simpler.

Precision Metal Orifices VCR Gaskets
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