Pressure – temperature, Standards, Approvals – Watts 709DCDA User Manual
Page 2: Materials, Models, Dimensions – weights
Pressure – Temperature
Temperature Range: 33˚F – 110˚F ( 0.5˚ – 43˚C) continuous,
140˚F (60˚C) intermittent
Maximum Working Pressure: 175psi (12.1bar)
Standards
AWWA Standard C510
Approvals
Approved by the foundation for Cross-Connection Controland
Hydraulic Research at the University of Southern California.
Sizes 4" – 10" (100 – 250mm) approved for horizontal and
vertical “flow up”. Size 3" (76mm) approved for horizontal only.
Factory Mutual approved 4" – 10" (100-250mm) vertical
“flow up”.
A
E
D
R
T
U*
L
C
(open)
Materials
Body:
Epoxy coated cast iron
Seat: Bronze
Disc Holder:
Bronze
Trim: Stainless
steel
Check Valve Discs: Rubber
Test Cocks:
Bronze
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 - 4" – 10" (100 – 250mm) without shutoff valves
Dimensions – Weights
SIZE (DN)
DIMENSIONS
WEIGHT
A
C
D
E
L
R
T
U*
W/OSY† gates
In.
mm
in.
mm
in.
mm
in.
mm
in.
mm
in.
mm
in.
mm
in.
mm
in.
mm
lbs.
kgs.
3
80
40
1016
18
7
⁄
8
479
3
1
⁄
2
89
12
305
24
610
14
356
3
76
14
356
190
86
4
100
52
1321
22
3
⁄
4
578
3
3
⁄
4
95
17
432
34
864
15
381
6
152
14
356
403
183
6
150
62
1
⁄
2
1588
30
1
⁄
8
765
4
1
⁄
2
114
21
533
41
1
⁄
2
1054
16
406
7
1
⁄
2
191
16
406
727
330
8
200
75
1905
37
3
⁄
4
959
5
1
⁄
2
140
26
660
52
1321
17
432
9
229
21
533
1327
602
10
250
90
2286
45
3
⁄
4
1162
6
1
⁄
2
165
32
813
64
1626
18
457
10
1
⁄
4
260
25
635
2093
949
* Service clearance for check assembly from center.
†UL/FM approved backflow preventers must include UL/FM approved OSY.
B.64
1048