Concentric Reducers (CR)
Concentric reducers are used to transition between pipes of the same diameter. They come in both steel and cast iron, and they can be found in a variety of sizes, including 2-inch, 3-inch, 4-inch and 6-inch. They are also known as male reducers because their outside diameter is larger than the inside diameter of their mating part (in this case a female adapter).
Eccentric Reducers (ER)
Eccentric reducers are used to transition between pipes of different diameters. The eccentric design allows for the joining of a pipe with an inside diameter that is larger than another.
NPS1 |
NPS2 |
OD1 |
OD2 |
H |
3/4 |
1/2 |
26.7 |
21.3 |
38 |
3/4 |
3/8 |
26.7 |
17.3 |
38 |
1 |
3/4 |
33.4 |
26.7 |
51 |
1 |
1/2 |
33.4 |
21.3 |
51 |
1-1/4 |
1 |
42.2 |
33.4 |
51 |
1-1/4 |
3/4 |
42.2 |
26.7 |
51 |
1-1/4 |
1/2 |
42.2 |
21.3 |
51 |
1-1/2 |
1-1/4 |
48.3 |
42.2 |
64 |
1-1/2 |
1 |
48.3 |
33.4 |
64 |
1-1/2 |
3/4 |
48.3 |
26.7 |
64 |
1-1/2 |
1/2 |
48.3 |
21.3 |
64 |
2 |
1-1/2 |
60.3 |
48.3 |
76 |
2 |
1-1/4 |
60.3 |
42.2 |
76 |
2 |
1 |
60.3 |
33.4 |
76 |
2 |
3/4 |
60.3 |
26.7 |
76 |
NPS1 |
NPS2 |
OD1 |
OD2 |
H |
2-1/2 |
2 |
73.0 |
60.3 |
89 |
2-1/2 |
1-1/2 |
73.0 |
48.3 |
89 |
2-1/2 |
1-1/4 |
73.0 |
42.2 |
89 |
2-1/2 |
1 |
73.0 |
33.4 |
89 |
3 |
2-1/2 |
88.9 |
73.0 |
89 |
3 |
2 |
88.9 |
60.3 |
89 |
3 |
1-1/2 |
88.9 |
48.3 |
89 |
3 |
1-1/4 |
88.9 |
42.2 |
89 |
3-1/2 |
3 |
101.6 |
88.9 |
102 |
3-1/2 |
2-1/2 |
101.6 |
73.0 |
102 |
3-1/2 |
2 |
101.6 |
60.3 |
102 |
3-1/2 |
1-1/2 |
101.6 |
48.3 |
102 |
3-1/2 |
1-1/4 |
101.6 |
42.2 |
102 |
4 |
3-1/2 |
114.3 |
101.6 |
102 |
4 |
3 |
114.3 |
88.9 |
102 |
NPS1 |
NPS2 |
OD1 |
OD2 |
H |
4 |
2-1/2 |
114.3 |
73.0 |
102 |
4 |
2 |
114.3 |
60.3 |
102 |
4 |
1-1/2 |
114.3 |
48.3 |
102 |
5 |
4 |
141.3 |
114.3 |
127 |
5 |
3-1/2 |
141.3 |
101.6 |
127 |
5 |
3 |
141.3 |
88.9 |
127 |
5 |
2-1/2 |
141.3 |
73.0 |
127 |
5 |
2 |
141.3 |
60.3 |
127 |
6 |
5 |
168.3 |
141.3 |
140 |
6 |
4 |
168.3 |
114.3 |
140 |
6 |
3-1/2 |
168.3 |
101.6 |
140 |
6 |
3 |
168.3 |
88.9 |
140 |
6 |
2-1/2 |
168.3 |
73.0 |
140 |
8 |
6 |
219.1 |
168.3 |
152 |
8 |
5 |
219.1 |
141.3 |
152 |
NPS1 |
NPS2 |
OD1 |
OD2 |
H |
8 |
4 |
219.1 |
114.3 |
152 |
8 |
3-1/2 |
219.1 |
101.6 |
152 |
10 |
8 |
273.0 |
219.1 |
178 |
10 |
6 |
273.0 |
168.3 |
178 |
10 |
5 |
273.0 |
141.3 |
178 |
10 |
4 |
273.0 |
114.3 |
178 |
12 |
10 |
323.8 |
273.0 |
203 |
12 |
8 |
323.8 |
219.1 |
203 |
12 |
6 |
323.8 |
168.3 |
203 |
12 |
5 |
323.8 |
141.3 |
203 |
14 |
12 |
355.6 |
323.8 |
330 |
14 |
10 |
355.6 |
273.0 |
330 |
14 |
8 |
355.6 |
219.1 |
330 |
14 |
6 |
355.6 |
168.3 |
330 |
16 |
14 |
406.4 |
355.6 |
356 |
NPS1 |
NPS2 |
OD1 |
OD2 |
H |
16 |
12 |
406.4 |
323.8 |
356 |
16 |
10 |
406.4 |
273.0 |
356 |
16 |
8 |
406.4 |
219.1 |
356 |
18 |
16 |
457.0 |
406.4 |
381 |
18 |
14 |
457.0 |
355.6 |
381 |
18 |
12 |
457.0 |
323.8 |
381 |
18 |
10 |
457.0 |
273.0 |
381 |
20 |
18 |
508.0 |
457.0 |
508 |
20 |
16 |
508.0 |
406.4 |
508 |
20 |
14 |
508.0 |
355.6 |
508 |
20 |
12 |
508.0 |
323.8 |
508 |
22 |
20 |
559.0 |
508.0 |
508 |
22 |
18 |
559.0 |
457.0 |
508 |
22 |
16 |
559.0 |
406.4 |
508 |
22 |
14 |
559.0 |
355.4 |
508 |
NPS1 |
NPS2 |
OD1 |
OD2 |
H |
24 |
22 |
610.0 |
559.0 |
508 |
24 |
20 |
610.0 |
508.0 |
508 |
24 |
18 |
610.0 |
457.0 |
508 |
24 |
16 |
610.0 |
406.4 |
508 |
26 |
24 |
660.0 |
610.0 |
610 |
26 |
22 |
660.0 |
559.0 |
610 |
26 |
20 |
660.0 |
508.0 |
610 |
26 |
18 |
660.0 |
457.0 |
610 |
28 |
26 |
711.0 |
660.0 |
610 |
28 |
24 |
711.0 |
610.0 |
610 |
28 |
20 |
711.0 |
508.0 |
610 |
28 |
18 |
711.0 |
457.0 |
610 |
30 |
28 |
762.0 |
711.0 |
610 |
30 |
26 |
762.0 |
660.0 |
610 |
30 |
24 |
762.0 |
610.0 |
610 |
NPS1 |
NPS2 |
OD1 |
OD2 |
H |
30 |
20 |
762.0 |
508.0 |
610 |
32 |
30 |
813.0 |
762.0 |
610 |
32 |
28 |
813.0 |
711.0 |
610 |
32 |
26 |
813.0 |
660.0 |
610 |
32 |
24 |
813.0 |
610.0 |
610 |
34 |
32 |
864.0 |
813.0 |
610 |
34 |
30 |
864.0 |
762.0 |
610 |
34 |
26 |
864.0 |
660.0 |
610 |
34 |
24 |
864.0 |
610.0 |
610 |
36 |
34 |
914.0 |
864.0 |
610 |
36 |
32 |
914.0 |
813.0 |
610 |
36 |
30 |
914.0 |
762.0 |
610 |
36 |
26 |
914.0 |
660.0 |
610 |
36 |
24 |
914.0 |
610.0 |
610 |
38 |
36 |
965.0 |
914.0 |
610 |
NPS1 |
NPS2 |
OD1 |
OD2 |
H |
38 |
34 |
965.0 |
864.0 |
610 |
38 |
32 |
965.0 |
813.0 |
610 |
38 |
30 |
965.0 |
762.0 |
610 |
38 |
28 |
965.0 |
711.0 |
610 |
38 |
26 |
965.0 |
660.0 |
610 |
40 |
38 |
1016.0 |
965.0 |
610 |
40 |
36 |
1016.0 |
914.0 |
610 |
40 |
34 |
1016.0 |
864.0 |
610 |
40 |
32 |
1016.0 |
813.0 |
610 |
40 |
30 |
1016.0 |
762.0 |
610 |
42 |
40 |
1067.0 |
1016.0 |
610 |
42 |
38 |
1067.0 |
965.0 |
610 |
42 |
36 |
1067.0 |
914.0 |
610 |
42 |
34 |
1067.0 |
864.0 |
610 |
42 |
32 |
1067.0 |
813.0 |
610 |
NPS1 |
NPS2 |
OD1 |
OD2 |
H |
42 |
30 |
1067.0 |
762.0 |
610 |
44 |
42 |
1118.0 |
1067.0 |
610 |
44 |
40 |
1118.0 |
1016.0 |
610 |
44 |
38 |
1118.0 |
965.0 |
610 |
44 |
36 |
1118.0 |
914.0 |
610 |
46 |
44 |
1168.0 |
1118.0 |
711 |
46 |
42 |
1168.0 |
1067.0 |
711 |
46 |
40 |
1168.0 |
1016.0 |
711 |
46 |
38 |
1168.0 |
965.0 |
711 |
48 |
46 |
1219.0 |
1168.0 |
711 |
48 |
44 |
1219.0 |
1118.0 |
711 |
48 |
42 |
1219.0 |
1067.0 |
711 |
48 |
40 |
1219.0 |
1016.0 |
711 |
NPS1 |
NPS2 |
OD1 |
OD2 |
H |
Stainless Steel Reducer : ASTM A403 WP Gr. 304, 304H, 309, 310, 316, 316L, 317L, 321, 347, 904L.
Carbon Steel Reducer : ASTM A 234 WPB , WPBW, WPHY 42, WPHY 46, WPHY 52, WPH 60, WPHY 65 & WPHY 70.
Low Temperature Carbon Steel Reducer : ASTM A420 WPL3, A420 WPL6.
Alloy Steel Reducer : ASTM / ASME A/SA 234 Gr. WP 1, WP 5, WP 9, WP 11, WP 12, WP 22, WP 91.
Duplex Steel Reducer : ASTM A 815, ASME SA 815 UNS NO S31803, S32205. Werkstoff No. 1.4462.
Titanium Alloy Reducer : ASTM B363 WPT2, WPT3, WPT7, WPT9, WPT11
Nickel Alloy Reducer : ASTM / ASME SB 336 UNS 2200 ( NICKEL 200 ), UNS 2201 (NICKEL 201 ), UNS 4400 (MONEL 400 ), UNS 8020 ( ALLOY 20 / 20 CB 3, UNS 8825 INCONEL (825), UNS 6600 (INCONEL 600 ), UNS 6601 ( INCONEL 601 ), UNS 6625 (INCONEL 625), UNS 10276 ( HASTELLOY C 276).
Copper Alloy Reducer: ASTM / ASME SB 111 UNS NO. C 10100 , C 10200 , C 10300 , C 10800 , C 12000, C 12200, C 70600 C 71500, ASTM / ASME SB 466 UNS NO. C 70600 ( CU -NI- 90/10) , C 71500 ( CU -NI- 70/30)