Buying Guide

NIBCO INC. WORLD HEADQUARTERS • 1516 MIDDLEBURY ST. • ELKHART, IN 46516-4740 • USA • PH: 1.800.234.0227
TECH SERVICES PH: 1.888.446.4226 • FAX: 1.888.336.4226 • INTERNATIONAL OFFICE PH: +1.574.295.3327 • FAX: +1.574.295.3455
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AHEAD OF THE FLOW
®
PVC Schedule 80
Webbed design
Solid design
N
N
L
L
Y
L
L
Bushings
Design Styles
The design style of most bushings is to have a solid wall between the
inside and outside connections. Some of the multistep reductions with
exceedingly thick cross-sections are not solid. This design style achieves
structural support with a web of ribs attaching the inner and outer connec-
tion walls, with the open area toward the exterior bushing face. The styles
are denoted by W and S for webbed and solid designs respectively.
Chemtrol
Fig. No.
4518 Flush Socket Reducer Bushing (SPG x S)
Nominal Universal Approx. Design Dim. Dim.
Size Part No. Lbs./Ea. Style L L NN
1/2 x 1/4 837-072 0.03 S 1.17 0.53
3/4 x 1/2 837-101 0.05 S 1.15 0.26
1 x 1/2 837-130 0.06 S 1.28 0.39
1 x 3/4 837-131 0.05 S 1.28 0.27
1 1/4 x 1/2 837-166 0.10 S 1.41 0.52
1 1/4 x 3/4 837-167 0.10 S 1.41 0.40
1 1/4 x 1 837-168 0.06 S 1.41 0.27
1 1/2 x 1/2 837-209 0.12 W 1.53 0.64
1 1/2 x 3/4 837-210 0.10 S 1.53 0.52
1 1/2 x 1 837-211 0.08 S 1.53 0.39
1 1/2 x 1 1/4 837-212 0.06 S 1.53 0.27
2 x 1/2 837-247 0.20 W 1.66 0.77
2 x 3/4 837-248 0.20 W 1.66 0.65
2 x 1 837-249 0.20 W 1.66 0.52
2 x 1 1/4 837-250 0.19 S 1.66 0.40
2 x 1 1/2 837-251 0.15 S 1.66 0.27
2 1/2 x 1 837-289 0.31 W 1.94 0.80
2 1/2 x 1 1/4 837-290 0.31 W 1.94 0.68
2 1/2 x 1 1/2 837-291 0.27 S 1.94 0.55
2 1/2 x 2 837-292 0.24 S 1.94 0.43
3 x 1 837-335 0.65 W 2.42 1.28
3 x 1 1/2 837-337 0.67 W 2.42 1.03
3 x 2 837-338 0.64 S 2.42 0.91
3 x 2 1/2 837-339 0.48 S 2.42 0.64
Chemtrol
Fig. No.
4518 Flush Socket Reducer Bushing (SPG x S) (cont.)
Nominal Universal Approx. Design Dim. Dim.
Size Part No. Lbs./Ea. Style LL NN
4 x 2 837-420 1.14 W 2.81 1.30
4 x 2 1/2 837-421 1.14 S 2.81 1.03
4 x 3 837-422 0.93 S 2.81 0.91
6 x 2 837-528 3.28 W 3.06 1.55
6 x 4 837-532 2.68 S 3.06 0.78
8 x 6 837-585 5.46
S
4.59 1.56
10 x 6 837-626 10.68 W 5.59 2.56
10 x 8 837-628 9.36 S 5.59 1.09
12 x 8 837-668 16.73 W 6.59 2.09
12 x 10 837-670 12.77
S
6.59 1.09
Other Reducing Couplings are produced by solvent cementing appropriate Reducer Bushings into
Socket Couplings. They may be ordered as factory fabrications or may be assembled in the field.
4518-3 Flush Spigot x Thread Reducer Bushing (SPG x FPT)
Nominal Universal Approx. Design Dim. Dim.
Size Part No. Lbs./Ea. Style LL Y*
1/2 x 1/4 838-072 0.03 S 1.17 0.31
3/4 x 1/4 838-098 0.04 S 1.29 0.31
3/4 x 1/2 838-101 0.03 S 1.29 0.43
1 x 1/2 838-130 0.07 S 1.56 0.43
1 x 3/4 838-131 0.05 S 1.56 0.45
1 1/4 x 1/2 838-166 0.14 S 1.66 0.43
1 1/4 x 3/4 838-167 0.12 S 1.66 0.45
1 1/4 x 1 838-168 0.10 S 1.66 0.53
1 1/2 x 1/2 838-209 0.21 S 1.78 0.43
1 1/2 x 3/4 838-210 0.19 S 1.78 0.45
1 1/2 x 1 838-211 0.17 S 1.78 0.53
1 1/2 x 1 1/4 838-212 0.18 S 1.78 0.55
2 x 1/2 838-247 0.34 S 1.92 0.43
2 x 3/4 838-248 0.32 S 1.92 0.45
2 x 1 838-249 0.29 S 1.92 0.53
2 x 1 1/4 838-250 0.24 S 1.92 0.55
2 x 1 1/2 838-251 0.20 S 1.92 0.55
2 1/2 x 2 838-292 0.25 S 2.18 0.57
3 x 1 838-335 0.65 S 2.42 0.53
3 x 1 1/2 838-337 0.70 S 2.42 0.55
3 x 2 838-338 0.67 S 2.42 0.57
3 x 2 1/2 838-339 0.52 S 2.42 0.87
4 x 2 838-420 1.17 S 2.81 0.57
4 x 3 838-422 1.01 S 2.81 0.95
Other size reductions are produced by solvent cementing appropriate Reducer Bushings
together. They may be ordered as factory fabrications or may be assembled in the field.
*Typical male component engagement, hand tight (L
1
in ASME B1.20.1 thread spec.) plus 1 1/2 turns.
Do not use or test the products in this catalog with compressed air or other gasses.
Revised 4/26/2019