Alutec Roof Outlet Flow Performance
Description
Size mm
Code
Dome Grate
Flat Grate
Dome Grate Including
Anti-Vortex Fins
ltrs/
sec
mtr/
Sq
ltrs/
sec
mtr/
Sq
ltrs/
sec
mtr/
Sq
Vertical Spigot
50
DR210
4.56
219
4.89
235
5.47
263
75
DR310
10.55
507
9.34
449
12.87
619
100
DR410
12.8
615
12.89
620
12.96
623
150
DR610
14.38
691
15.3
736
16.4
788
Vertical Threaded
50
DR215
4.44
213
4.74
228
5.33
256
75
DR315
10.37
499
9.75
469
12.65
608
100
DR415
12.55
603
12.96
623
12.84
617
150
DR615
14.27
686
15.07
725
16.29
783
45° Spigot
50
DR220
2.5
120
2.68
129
3.59
173
75
DR320
5.8
279
6.97
335
6.84
329
100
DR420
8.77
422
10.34
497
10.52
506
45° Threaded
50
DR225
2.5
120
2.73
131
3.59
173
75
DR325
5.8
279
6.97
335
6.84
329
100
DR425
8.68
417
10.06
484
10.59
509
90° Spigot
50
DR230
2.2
106
2.28
110
2.75
132
75
DR330
3.82
184
4
192
4.66
224
100
DR430
7.24
348
8.28
398
8.69
418
90° Threaded
50
DR235
2.2
106
2.32
112
2.75
132
75
DR335
3.77
181
4.07
196
4.51
217
100
DR435
7.14
343
8.13
391
8.56
412
150
DR635
9.33
449
12
577
11.83
569
Balcony
50
DR260
-
-
4.78
230
-
-
75
DR360
-
-
5.95
286
-
-
100
DR460
-
-
7.55
363
-
-
Shallow Balcony
50
DR265
-
-
4.59
221
-
-
75
DR365
-
-
5.77
277
-
-
Two Way (Horizontal)
50
DR250
-
-
1.2
58
-
-
75
DR350
-
-
2
96
-
-
100
DR450
-
-
2.38
114
-
-
Two Way
(Vertical)
50
DR250
-
-
2.03
98
-
-
75
DR350
-
-
4.12
198
-
-
100
DR450
-
-
7.83
376
-
-
Car Park
100
DR480
-
-
12.96
623
-
-
Gully
75
DR390
11.9
572
-
-
-
-
100
DR490
12.44
598
-
-
-
-
Refurb
75
DR350
4.78
230
-
-
5.74
276
100
DR450
5.53
266
-
-
6.69
322
© Marley Plumbing & Drainage 2004
