Brochure
CAST IRON CONCENTRIC REDUCING COUPLING CLASS 125
NPS
Length of
Coupling
A
Outside
Dia. of
Band
Small End
B (min)
Outside
Dia. of
LargeEnd
B2 (min)
Length of
Threads
Small End
C (min)
Length of
Threads
Large End
C2 (min)
Take
Out
Take
Out
3/4 x 1/2 1.50 1.31 1.62 0.43 0.50 0.20 0.22
1 x 1/2 1.70 1.31 1.99 0.43 0.58 0.85 0.85
1 x 3/4 1.70 1.63 1.99 0.50 0.58 0.85 0.85
1 1/4 x 1 2.130 1.95 2.39 0.58 0.67 0.17 0.30
1 1/4 x 3/4 2.13 1.95 2.39 0.50 0.67 0.17 0.32
1 1/4 x 1/2 — — — — — — —
1 1/2 x 1 1/4 2.25 2.39 2.68 0.67 0.70 0.36 0.52
1 1/2 x 1 2.25 2.39 2.68 0.58 0.70
1 1/2 x 3/4 — — — — — — —
1 1/2 x 1/2 — — — — — — —
2 x 1 1/2 2.32 2.68 3.28 0.70 0.75 0.40 0.44
2 x 1 1/4 2.32 2.39 3.28 0.67 0.75 0.40 0.45
2 x 1 2.32 1.95 3.28 0.58 0.75 0.40 0.44
2 x 3/4 2.32 1.63 3.28 0.50 0.75 0.40 0.45
2 x 1/2 2.32 1.63 3.28 0.43 0.75 0.40 0.48
2 1/2 x 2 2.63 3.28 3.86 0.75 0.92 0.18 0.56
2 1/2 x 1 1/2 2.63 3.28 3.86 0.70 0.92 0.18 0.59
3 x 2 1/2
— — — — — — —
3 x 2 2.88 3.28 4.62 0.75 0.98 0.29 0.68
3 x 1 1/2 2.88 3.28 4.62 0.70 0.98 0.24 0.72
4 x 3 — — — — — — —
4 x 2 1/2 — — — — — — —
4 x 2 — — — — — — —
6 x 4 — — — — — — —
B2
C2
C
A
B
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