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-20-2-BR N/A 0.02 in N/A Brass N/A 0.0088 N/A 2000 psig N/A 2 psig N/A None
BIFLCH-21-2-BR N/A 0.021 in N/A Brass N/A 0.0096 N/A 2000 psig N/A 2 psig N/A None
BIFLCH-22-2-BR N/A 0.022 in N/A Brass N/A 0.011 N/A 2000 psig N/A 2 psig N/A None
BIFLCH-23-2-BR N/A 0.023 in N/A Brass N/A 0.012 N/A 2000 psig N/A 2 psig N/A None
BIFLCH-24-2-BR N/A 0.024 in N/A Brass N/A 0.013 N/A 2000 psig N/A 2 psig N/A None
BIFLCH-25-2-BR N/A 0.025 in N/A Brass N/A 0.014 N/A 2000 psig N/A 2 psig N/A None
BIFLCH-26-2-BR N/A 0.026 in N/A Brass N/A 0.016 N/A 2000 psig N/A 2 psig N/A None
BIFLCH-27-2-BR N/A 0.027 in N/A Brass N/A 0.017 N/A 2000 psig N/A 2 psig N/A None
BIFLCH-28-2-BR N/A 0.028 in N/A Brass N/A 0.018 N/A 2000 psig N/A 2 psig N/A None
BIFLCH-29-2-BR N/A 0.029 in N/A Brass N/A 0.019 N/A 2000 psig N/A 2 psig N/A None
BIFLCH-31-2-BR N/A 0.031 in N/A Brass N/A 0.022 N/A 2000 psig N/A 2 psig N/A None
BIFLCH-32-2-BR N/A 0.032 in N/A Brass N/A 0.024 N/A 2000 psig N/A 2 psig N/A None
BIFLCH-33-2-BR N/A 0.033 in N/A Brass N/A 0.025 N/A 2000 psig N/A 2 psig N/A None
BIFLCH-35-2-BR N/A 0.035 in N/A Brass N/A 0.028 N/A 2000 psig N/A 2 psig N/A None
BIFLCH-37-2-BR N/A 0.037 in N/A Brass N/A 0.031 N/A 2000 psig N/A 2 psig N/A None
BIFLCH-38-2-BR N/A 0.038 in N/A Brass N/A 0.032 N/A 2000 psig N/A 2 psig N/A None
BIFLCH-39-2-BR N/A 0.039 in N/A Brass N/A 0.033 N/A 2000 psig N/A 2 psig N/A None
BIFLCH-40-2-BR N/A 0.04 in N/A Brass N/A 0.036 N/A 2000 psig N/A 2 psig N/A None
BIFLCH-41-2-BR N/A 0.041 in N/A Brass N/A 0.038 N/A 2000 psig N/A 2 psig N/A None
BIFLCH-42-2-BR N/A 0.042 in N/A Brass N/A 0.039 N/A 2000 psig N/A 2 psig N/A None
BIFLCH-43-2-BR N/A 0.043 in N/A Brass N/A 0.041 N/A 2000 psig N/A 2 psig N/A None
BIFLCH-47-2-BR N/A 0.047 in N/A Brass N/A 0.048 N/A 2000 psig N/A 2 psig N/A None
BIFLCH-52-2-BR N/A 0.052 in N/A Brass N/A 0.059 N/A 2000 psig N/A 2 psig N/A None
BIFLCH-55-2-BR N/A 0.055 in N/A Brass N/A 0.068 N/A 2000 psig N/A 2 psig N/A None
BIFLCH-60-2-BR N/A 0.06 in N/A Brass N/A 0.081 N/A 2000 psig N/A 2 psig N/A None
Unit of Measure
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