Standards, Approvals, Series 909ag air gaps – Watts 909RPDA User Manual
Page 2: Dimensions — weights, Models, Materials, Pressure — temperature
Standards
AWWA C511-92; CSA B64
USC Manual for Cross-connection Control, 8th Edition
Approvals
Approved by the foundation for Cross-Connection Control and Hydraulic
Research at the University of Southern California.
Series 909AG AIR GAPS
When installing a drain line, use Series 909
air gaps on Model 909 backflow preventers.
2
SIZE (DN)
DIMENSIONS
WEIGHT
A
C
D
D1
E, E1
G
L
R
T
T1
in.
mm
in.
mm
in.
mm
in.
mm
in.
mm
in.
mm
in.
mm
in.
mm
in.
mm
in.
mm
in.
mm
lbs.
kgs.
2
1
⁄
2
65
42
1
⁄
8
1070
16
3
⁄
8
416
5
1
⁄
4
133
4
1
⁄
4
114
12
305
7
178
26
1
⁄
8
664
14
356
9
229
7
5
⁄
8
194
230
104
3
80
42
1
⁄
8
1070
18
7
⁄
8
479
5
1
⁄
4
133
4
1
⁄
4
114
12
305
7
178
26
1
⁄
8
664
14
356
9
229
7
5
⁄
8
194
230
104
4
100
55
1
⁄
8
1400
22
3
⁄
4
578
6
152
5
7
⁄
8
149
17
432
9
1
⁄
2
241
37
940
15
381
13
5
⁄
8
346
11
3
⁄
4
299
470
213
6
150
66
1664
30
1
⁄
8
765
6
152
6
152
20
3
⁄
4
527
14
1
⁄
2
368
45
1130
16
406
13
5
⁄
8
346
11
3
⁄
4
299
798
362
8
200
78
1
⁄
2
1994
37
3
⁄
4
959
9
3
⁄
4
248
8
5
⁄
8
219
26
660
18
1
⁄
2
470
55
1
⁄
4
1403
17
432
18
1
⁄
2
470
16
3
⁄
8
416
1456
660
10
250
93
5
⁄
8
2378
45
3
⁄
4
1162
9
3
⁄
4
248
8
5
⁄
8
219
32
813
21
1
⁄
2
546
67
1
⁄
2
1715
18
457
18
1
⁄
2
470
16
3
⁄
8
416
2230 1012
Dimensions — Weights
NOTE:
Piping for 3" 909 will start from #1 gate valve and connect
at #2 check valve.
E
L
A
E
1
G
D
C
(Open)
Iron
Ordering
Series/Sizes
Dimensions
Weight
Body
Code
A
B
C
Model
in.
mm
in.
mm
in.
mm
lbs
kgs
909AG-F
0881378 1
1
⁄
4
" – 3" 009/909
1
1
⁄
4
" – 2" 009 M1 4
3
⁄
8
" 111 6
3
⁄
4
171
2
51
3.25 1.47
2" 009 M2
909AG-K
0881385
4" – 6" 909
6
3
⁄
8
" 162 9
5
⁄
8
244
3
76
6.25 2.83
8" – 10" 909 M1
909AG-M
0881387
8" – 10" 909
7
3
⁄
8
" 187 11
1
⁄
4
286
4
102 15.50 7.03
A
B
C
Models
Suffix:
OSY – UL/FM outside stem and yoke resilient seated gate valves
CFM – cubic feet per minute meter
GPM – gallons per minute meter
LF – less shutoff valves
Materials
Discs: Rubber
Body: Epoxy coated cast iron
Seat and Disc Holder: Bronze
Trim: Stainless steel
Test Cocks: Bronze
Pressure — Temperature
Temperature Range: 33°F – 140°F (0.5°C – 60°C) continuous
Maximum Working Pressure: 175psi (12.1 bar)
R
T
T
1
D
1
1047
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