World Wide Metric, Inc.
37 Readington Road
Branchburg, New Jersey 08876
Phone: 732-247-2300 • Fax: 732-247-7258
E-Mail: sales@worldwidemetric.com • Web site: www.worldwidemetric.com
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Other wall thicknesses are available from stock.
Concentric reducers with a permeability πr <1.08 are available on request.
a2319-500
Unit of Measure
1 2 3 4 5 

Item #

RA 1 - Nominal Size

RA 2 - Nominal Size

RA 1 - OD

RA 2 - OD

S1

S2

YCN-RED-020x1.0X016x1.0 N/A 1/2 in N/A 3/8 in N/A 20.0 mm N/A 16 mm N/A 1.0 mm N/A 1.0 mm
YCN-RED-025x1.5X016x1.0 N/A 3/4 in N/A 3/8 in N/A 25.0 mm N/A 16 mm N/A 1.5 mm N/A 1.0 mm
YCN-RED-025x1.5X020x1.0 N/A 3/4 in N/A 1/2 in N/A 25.0 mm N/A 20 mm N/A 1.5 mm N/A 1.0 mm
YCN-RED-030x1.5X016x1.0 N/A 1 in N/A 3/8 in N/A 30.0 mm N/A 16 mm N/A 1.5 mm N/A 1.0 mm
YCN-RED-030x2.0X016x1.0 N/A 1 in N/A 3/8 in N/A 30.0 mm N/A 16 mm N/A 2.0 mm N/A 1.0 mm
YCN-RED-030x1.5X020x1.0 N/A 1 in N/A 1/2 in N/A 30.0 mm N/A 20 mm N/A 1.5 mm N/A 1.0 mm
YCN-RED-030x2.0X020x1.0 N/A 1 in N/A 1/2 in N/A 30.0 mm N/A 20 mm N/A 2.0 mm N/A 1.0 mm
YCN-RED-030x1.5X025x1.5 N/A 1 in N/A 3/4 in N/A 30.0 mm N/A 25 mm N/A 1.5 mm N/A 1.5 mm
YCN-RED-030x2.0X025x1.5 N/A 1 in N/A 3/4 in N/A 30.0 mm N/A 25 mm N/A 2.0 mm N/A 1.5 mm
YCN-RED-038x1.5X016x1.0 N/A 1 1/4 in N/A 3/8 in N/A 38.0 mm N/A 16 mm N/A 1.5 mm N/A 1.0 mm
YCN-RED-038x2.0X016x1.0 N/A 1 1/4 in N/A 3/8 in N/A 38.0 mm N/A 16 mm N/A 2.0 mm N/A 1.0 mm
YCN-RED-038x1.5X020x1.0 N/A 1 1/4 in N/A 1/2 in N/A 38.0 mm N/A 20 mm N/A 1.5 mm N/A 1.0 mm
YCN-RED-038x2.0X020x1.0 N/A 1 1/4 in N/A 1/2 in N/A 38.0 mm N/A 20 mm N/A 2.0 mm N/A 1.0 mm
YCN-RED-038x1.5X025x1.5 N/A 1 1/4 in N/A 3/4 in N/A 38.0 mm N/A 25 mm N/A 1.5 mm N/A 1.5 mm
YCN-RED-038x2.0X025x1.5 N/A 1 1/4 in N/A 3/4 in N/A 38.0 mm N/A 25 mm N/A 2.0 mm N/A 1.5 mm
YCN-RED-038x1.5X030x1.5 N/A 1 1/4 in N/A 1 in N/A 38.0 mm N/A 30 mm N/A 1.5 mm N/A 1.5 mm
YCN-RED-038x2.0X030x2.0 N/A 1 1/4 in N/A 1 in N/A 38.0 mm N/A 30 mm N/A 2.0 mm N/A 2.0 mm
YCN-RED-044x1.5X020x1.0 N/A 1 1/2 in N/A 1/2 in N/A 44.5 mm N/A 20 mm N/A 1.5 mm N/A 1.0 mm
YCN-RED-044x2.5X020x1.0 N/A 1 1/2 in N/A 1/2 in N/A 44.5 mm N/A 20 mm N/A 2.5 mm N/A 1.0 mm
YCN-RED-044x1.5X025x1.5 N/A 1 1/2 in N/A 3/4 in N/A 44.5 mm N/A 25 mm N/A 1.5 mm N/A 1.5 mm
YCN-RED-044x2.5X025x1.5 N/A 1 1/2 in N/A 3/4 in N/A 44.5 mm N/A 25 mm N/A 2.5 mm N/A 1.5 mm
YCN-RED-044x1.5X030x1.5 N/A 1 1/2 in N/A 1 in N/A 44.5 mm N/A 30 mm N/A 1.5 mm N/A 1.5 mm
YCN-RED-044x2.5X030x2.0 N/A 1 1/2 in N/A 1 in N/A 44.5 mm N/A 30 mm N/A 2.5 mm N/A 2.0 mm
YCN-RED-044x1.5X038x1.5 N/A 1 1/2 in N/A 1 1/4 in N/A 44.5 mm N/A 38 mm N/A 1.5 mm N/A 1.5 mm
YCN-RED-044x2.5X038x2.0 N/A 1 1/2 in N/A 1 1/4 in N/A 44.5 mm N/A 38 mm N/A 2.5 mm N/A 2.0 mm
Unit of Measure
1 2 3 4 5