Concentric Reducer 20" × 16" XS — ASME B16.9
Concentric Reducer 20" × 16" XS to ASME B16.9: outside diameter at bevel 508 mm, wall thickness (xs) 12.7 mm, inside diameter 482.6 mm, small end od 406.4 mm, small end wall (xs) 12.7 mm; approx. weight 80.4 kg.
Dimensions of Concentric Reducer 20" × 16" XS
| Symbol | Dimension | Value |
|---|---|---|
| D | Outside diameter at bevel | 508 mm (20.000 in) |
| T | Wall thickness (XS) | 12.7 mm (0.500 in) |
| ID | Inside diameter | 482.6 mm (19.000 in) |
| D2 | Small end OD | 406.4 mm (16.000 in) |
| T2 | Small end wall (XS) | 12.7 mm (0.500 in) |
| H | End to end | 508 mm (20.000 in) |
| m | Approximate weight | 80.4 kg (177.25 lb) |
SKU TSH-BW-REDC-B169-XS-20X16 · Standard ASME B16.9 · weight: Teshi weight chart (by large end)
Purchase description
CONCENTRIC REDUCER, 20" × 16", XS, SEAMLESS, BEVELLED ENDS, ASTM A234 WPB, ASME B16.9
Available materials: ASTM A234 WPB, ASTM A420 WPL6, ASTM A403 WP304/304L, ASTM A403 WP316/316L, ASTM A234 WP11, ASTM A234 WP22, ASTM A234 WP91, ASTM A815 UNS S31803.
Additional data
| Ends | Bevelled 37.5° ± 2.5°, root face 1.6 mm (ASME B16.25) |
Same size, other ratings
Other sizes — Concentric Reducer, XS
¾" × ½"1" × ¾"1" × ½"1 ¼" × 1"1 ¼" × ¾"1 ¼" × ½"1 ½" × 1 ¼"1 ½" × 1"1 ½" × ¾"1 ½" × ½"2" × 1 ½"2" × 1 ¼"2" × 1"2" × ¾"2 ½" × 2"2 ½" × 1 ½"2 ½" × 1 ¼"2 ½" × 1"3" × 2 ½"3" × 2"3" × 1 ½"3" × 1 ¼"3 ½" × 3"3 ½" × 2 ½"3 ½" × 2"3 ½" × 1 ½"4" × 3"4" × 2 ½"4" × 2"4" × 1 ½"5" × 4"5" × 3"5" × 2 ½"5" × 2"6" × 5"6" × 4"6" × 3"6" × 2 ½"8" × 6"8" × 5"8" × 4"8" × 3"10" × 8"10" × 6"10" × 5"10" × 4"12" × 10"12" × 8"12" × 6"12" × 5"14" × 12"14" × 10"14" × 8"14" × 6"16" × 14"16" × 12"16" × 10"16" × 8"18" × 16"18" × 14"18" × 12"18" × 10"20" × 18"20" × 14"20" × 12"22" × 20"22" × 18"22" × 16"22" × 14"24" × 22"24" × 20"24" × 18"24" × 16"26" × 24"26" × 22"26" × 20"26" × 18"28" × 26"28" × 24"28" × 22"28" × 20"30" × 28"30" × 26"30" × 24"30" × 22"32" × 30"32" × 28"32" × 26"32" × 24"34" × 32"34" × 30"34" × 28"34" × 26"36" × 34"36" × 32"36" × 30"36" × 28"
Frequently asked questions
What is the difference between a long radius and short radius elbow?
A long radius (LR) elbow has a centre-line radius of 1.5 × NPS and is the default choice. A short radius (SR) elbow has a radius of 1.0 × NPS. SR elbows save space but add pressure drop and are not suitable for pigging.
What is the centre-to-end dimension of a 90° LR elbow?
For ASME B16.9 90° LR elbows the centre-to-end dimension A is 1.5 × NPS in inches. For example, a 6" elbow is 229 mm (9 in) and a 4" elbow is 152 mm (6 in).
What is the difference between a concentric and an eccentric reducer?
A concentric reducer keeps both ends on the same centre line. An eccentric reducer has one flat side. Eccentric reducers go on pump suctions with the flat side on top, so air pockets cannot form.
What is a 3D or 5D bend?
A bend whose centre-line radius is 3 or 5 times the nominal pipe size. They are usually made by induction bending and supplied with tangent lengths. 5D bends allow pigging in pipelines.