Submittal Sheet

Strainer Dimensions
SIZE (DN) DIMENSIONS WEIGHT
M N1† N
in. mm in. mm in. mm in. mm lbs. kgs.
2
1
⁄2 65 10 254 10 254 6
1
⁄2 165 28 12.7
3 80 10
1
⁄8 257 10 254 7 178 34 15.4
4 100 12
1
⁄8 308 12 305 8
1
⁄4 210 60 27
6 150 18
1
⁄2 470 20 508 13
1
⁄2 343 133 60
8 200 21
5
⁄8 549 22
3
⁄4 578 15
1
⁄2 394 247 112
10 250 26 660 28 711 18
1
⁄2 470 370 168
† – Dimension required for screen removal
3
*UL, FM approved backflow preventers must include UL/FM approved OSY gate valves.
R
T
Dimensions — Weights
A
M
C (NRS)
N1
C (OSY)
(Open)
D
U
B
C
A
SIZE (DN) DIMENSIONS WEIGHT
C clearance
for check
A A1 (OSY)
* (NRS) D L U R R (QT) T NRS OSY QT
in. mm in. mm in. mm in. mm in. mm in. mm in. mm in. mm in. mm in. mm in. mm lbs. kgs. lbs. kgs. lbs. kgs.
2
1
⁄2 65 41
1
⁄4 1048 20
5
⁄8 524 16
3
⁄8 416 9
3
⁄8 238 5
1
⁄4 133 26
1
⁄8 663 11 279 4 102 16 406 9
1
⁄16 230 195 88.4 198 89.8 182 82.6
3 80 42
1
⁄4 1073 21
1
⁄4 540 18
7
⁄8 479 10
1
⁄4 260 5
1
⁄4 133 26
1
⁄8 663 11 279 5 127 16 406 9
1
⁄16 230 225 102 230 104 190 86
4 100 55
1
⁄8 1400 27
5
⁄8 702 22
3
⁄4 578 12
3
⁄16 310 6 152 37 940 14 356 6 152 19
3
⁄4 502 14
3
⁄8 365 455 206 470 213 352 160
6 150 65
1
⁄2 1664 32
3
⁄4 832 30
1
⁄8 765 16 406 6 152 44
1
⁄2 1130 16 406 11 279 26 660 14
3
⁄8 365 718 326 798 362 762 346
8 200 78
1
⁄2 2000 39
3
⁄8 1000 37
3
⁄4 959 19
15
⁄16 506 9
3
⁄4 248 55
1
⁄4 1403 21 533 11
1
⁄4 286 11
1
⁄4 286 19
1
⁄4 489 1350 612 1456 660 2286 1037
10 250 93
5
⁄8 2378 46
7
⁄8 1190 45
3
⁄4 1162 23
13
⁄16 605 9
3
⁄4 248 67
3
⁄8 1711 21 533 12
1
⁄2 318 12
1
⁄2 318 21 533 2160 980 2230 1011 3716 1685
NOTE: Relief valve section is reversible, therefore, can be on either side and is furnished standardly as shown.
NOTE: Valve may be furnished with (2) OSY or (2) NRS Shutoffs.
Watts G-4000 Series
Ball Valves
Send for F-G4000
N
A1
L
OUTLET
Quarter-turn (QT) Valve
DIMENSIONS WEIGHT
Iron Ordering Series/Sizes
Body Code A B C
Model No. 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
For flange size backflow preventers installed vertically (flow down), a fabricated air gap
is recommended.
Air Gap Dimensions
When installing a drain line on Series 909 backflow preventers that are installed hori-
zontally, use 909 AG series air gaps.