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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    Checked orifices are a series arrangement of a precision orifice, a ball check valve and an optional screen. The all metal assemblies are made of brass or stainless steel. Gas or liquid can flow in one direction only, at a rate established by the metering orifice. Reverse pressure differential does not result in reverse flow. Standard sizes are 10-32, 1/8" NPT and 1/4" NPT. Custom requirements will be reviewed for large quantity applications.
Checked Orifices, Ball Type
Check Valves, Ball Type - NPT Connection; NPT Nipple, NPT Adapter - Line Drawing
Unit of Measure
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Part Number

Orifice Diameter

Material

CV

Maximum Fitting PRESSURE

DIFFERENTIAL CRACK PRESSURE

Screened

BIFLCH-31-0-BR N/A 0.031 in N/A Brass N/A 0.022 N/A 2000 psig N/A 0 psig N/A None
BIFLCH-32-0-BR N/A 0.032 in N/A Brass N/A 0.024 N/A 2000 psig N/A 0 psig N/A None
BIFLCH-33-0-BR N/A 0.033 in N/A Brass N/A 0.025 N/A 2000 psig N/A 0 psig N/A None
BIFLCH-35-0-BR N/A 0.035 in N/A Brass N/A 0.028 N/A 2000 psig N/A 0 psig N/A None
BIFLCH-37-0-BR N/A 0.037 in N/A Brass N/A 0.031 N/A 2000 psig N/A 0 psig N/A None
BIFLCH-38-0-BR N/A 0.038 in N/A Brass N/A 0.032 N/A 2000 psig N/A 0 psig N/A None
BIFLCH-39-0-BR N/A 0.039 in N/A Brass N/A 0.033 N/A 2000 psig N/A 0 psig N/A None
BIFLCH-40-0-BR N/A 0.04 in N/A Brass N/A 0.036 N/A 2000 psig N/A 0 psig N/A None
BIFLCH-41-0-BR N/A 0.041 in N/A Brass N/A 0.038 N/A 2000 psig N/A 0 psig N/A None
BIFLCH-42-0-BR N/A 0.042 in N/A Brass N/A 0.039 N/A 2000 psig N/A 0 psig N/A None
BIFLCH-43-0-BR N/A 0.043 in N/A Brass N/A 0.041 N/A 2000 psig N/A 0 psig N/A None
BIFLCH-47-0-BR N/A 0.047 in N/A Brass N/A 0.048 N/A 2000 psig N/A 0 psig N/A None
BIFLCH-52-0-BR N/A 0.052 in N/A Brass N/A 0.059 N/A 2000 psig N/A 0 psig N/A None
BIFLCH-55-0-BR N/A 0.055 in N/A Brass N/A 0.068 N/A 2000 psig N/A 0 psig N/A None
BIFLCH-60-0-BR N/A 0.06 in N/A Brass N/A 0.081 N/A 2000 psig N/A 0 psig N/A None
BIFLCH-10-2-BR N/A 0.0102 in N/A Brass N/A 0.0025 N/A 2000 psig N/A 2 psig N/A None
BIFLCH-11-2-BR N/A 0.011 in N/A Brass N/A 0.0028 N/A 2000 psig N/A 2 psig N/A None
BIFLCH-12-2-BR N/A 0.0122 in N/A Brass N/A 0.0034 N/A 2000 psig N/A 2 psig N/A None
BIFLCH-13-2-BR N/A 0.013 in N/A Brass N/A 0.0038 N/A 2000 psig N/A 2 psig N/A None
BIFLCH-14-2-BR N/A 0.0142 in N/A Brass N/A 0.0043 N/A 2000 psig N/A 2 psig N/A None
BIFLCH-15-2-BR N/A 0.015 in N/A Brass N/A 0.005 N/A 2000 psig N/A 2 psig N/A None
BIFLCH-16-2-BR N/A 0.016 in N/A Brass N/A 0.0055 N/A 2000 psig N/A 2 psig N/A None
BIFLCH-17-2-BR N/A 0.017 in N/A Brass N/A 0.0067 N/A 2000 psig N/A 2 psig N/A None
BIFLCH-18-2-BR N/A 0.018 in N/A Brass N/A 0.0073 N/A 2000 psig N/A 2 psig N/A None
BIFLCH-19-2-BR N/A 0.019 in N/A Brass N/A 0.008 N/A 2000 psig N/A 2 psig N/A None
Unit of Measure
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