The URB/URD Series Discharge Silencer is a heavy-duty, all welded unit constructed of carbon steel sheet and plate. It provides pulse control and silencing for subcritical pitch line velocity (PLV) applications. Sizes 4" and larger are equipped with flanged connections drilled to 125/150 lb ANSI specifications. Smaller sizes are standard with male threaded pipe nipples. Units sized 4" and 5" are available in either flanged or male pipe threads. Exterior surfaces receive a shop coat of rust inhibitive primer and may be finish painted in the field if desired.
| Size |
Capacity (Inlet CFM 14.7 PSIA at 70°F) |
| Inlet Silencer |
Discharge
Silencer |
| 4 PSIG |
6 PSIG |
8 PSIG |
10 PSIG |
15 PSIG |
| 1 |
30 |
35 |
40 |
40 |
40 |
45 |
| 1.5 |
70 |
80 |
85 |
90 |
95 |
105 |
| 2 |
120 |
140 |
150 |
160 |
165 |
185 |
| 2.5 |
190 |
220 |
235 |
245 |
255 |
285 |
| 3 |
270 |
320 |
335 |
355 |
370 |
415 |
| 3.5 |
370 |
430 |
455 |
480 |
505 |
560 |
| 4 |
480 |
560 |
600 |
630 |
660 |
735 |
| 5 |
750 |
880 |
935 |
985 |
1030 |
1150 |
| 6 |
1080 |
1260 |
1340 |
1410 |
1480 |
1650 |
| 8 |
1920 |
2250 |
2390 |
2510 |
2630 |
2940 |
| Est.
Temp |
70°F |
115°F |
140°F |
165°F |
190°F |
240°F |
|
|
|
|
|
|
|
| Size |
D |
L |
N |
H |
| URB-1 |
4.5 |
21 |
2 |
17 |
| URB-1.5 |
6.5 |
24 |
2 |
20 |
| URB-2 |
8 |
33 |
3 |
27 |
| URB-2.5 |
10 |
34 |
3 |
28 |
| URB-3 |
10 |
46 |
3 |
40 |
| URB-3.5 |
12 |
52 |
3 |
46 |
| URB-4 |
14 |
53 |
3 |
47 |
| URB-5 |
16 |
65 |
3 |
59 |
| URB-6 |
18 |
72 |
3 |
66 |
| URD-8 |
22 |
97 |
3.5 |
90 |
|
|
|
|
|
Note: Sizes 1"–6" are URB Series; sizes 8"–30" are URD Series. Both series are fundamentally the same in design and the performance characteristics are identical.
Please Note: The product picture may differ slightly from the actual product.
