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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    The restrictors incorporate a precision synthetic sapphire orifice which is fitted within a main body. The sapphire orifice is a stable, accurate flow restrictor. Standard sizes range from .0012" to .0252" orifice diameter in 32 increments.
Precision Sapphire Orifices 10-32 UNF connections
Precision Sapphire Orifices - 10-32 UNF connections - Line Drawing
Unit of Measure
1 2 

Part Number

Orifice Diameter

Material

CV

Maximum Fitting PRESSURE

Connection A

Screened

P-40-BR N/A 0.0157 in0.4 mm N/A Brass N/A 0.0057 N/A 100 psig N/A Straight Thread N/A None
P-44-BR N/A 0.0173 in0.44 mm N/A Brass N/A 0.0067 N/A 100 psig N/A Straight Thread N/A None
P-48-BR N/A 0.0189 in0.48 mm N/A Brass N/A 0.008 N/A 100 psig N/A Straight Thread N/A None
P-52-BR N/A 0.0205 in0.52 mm N/A Brass N/A 0.0091 N/A 100 psig N/A Straight Thread N/A None
P-54-BR N/A 0.0213 in0.54 mm N/A Brass N/A 0.01 N/A 100 psig N/A Straight Thread N/A None
P-58-BR N/A 0.0228 in0.58 mm N/A Brass N/A 0.011 N/A 100 psig N/A Straight Thread N/A None
P-64-BR N/A 0.0252 in0.64 mm N/A Brass N/A 0.013 N/A 100 psig N/A Straight Thread N/A None
Unit of Measure
1 2