Approvals, Dimensions — weights materials, Pressure — temperature – Watts LF709 User Manual
Page 2: Standards
Approvals
Approved by the Foundation for Cross-Connection Control
and Hydraulic Research at the University of Southern Cali-
fornia. Sizes 4" – 10" (100 – 250mm) approved horizontal
and vertical “flow up". Size 2
1
⁄
2
" and 3" (65 – 80mm) ap-
proved horizontal only.
Factory Mutual approved 4" – 10" (80 – 250mm) vertical “flow
up" with OSY gate valves only.
Note: Model “S" not listed
Dimensions — Weights
Materials
Check Valve Bodies: Epoxy coated cast iron
Seats:
Stainless Steel
Pressure — Temperature
Temperatures Range: 33°F – 110°F (0.5°C – 43°C) continuous,
140°F (60°C) intermittent
Maximum Working Pressure: 175psi (12.1 bar)
Standards
AWWA C510-92
IAPMO PA 31
USC Manual for Cross-Connection Control, 8th Edition
D
C (open)
—
L
A
N
1
M
R
T
2
U
1015
B64.5
Size (DN)
DiMeNSioNS
A
C (OSY)
C (NRS)
D
L
U††
M
N
in.
mm
in.
mm
in.
mm
in.
mm
in.
mm
in.
mm
in.
mm
in.
mm
in.
mm
2
1
⁄
2
65
39
3
⁄
8
1000
16
3
⁄
8
416
9
3
⁄
8
238
3
1
/
2
89
24
1
/
8
613
11
279
10
254
6
1
/
2
165
3
80
40
3
⁄
8
1025
18
7
⁄
8
479
10
1
⁄
4
260
3
3
/
4
95
24
1
/
8
613
14
356
10
1
/
8
257
7
178
4
100
52
3
⁄
8
1330
22
3
⁄
4
578
12
3
⁄
16
310
4
1
/
2
114
34
1
/
8
867
14
356
12
1
/
8
308
8
1
/
4
210
6
150
62
7
⁄
8
1597
30
1
⁄
8
765
16
406
5
1
/
2
140
41
1
/
8
1057
16
406
18
1
/
2
470
13
1
/
2
343
8
200
75
1905
37
3
⁄
4
959
19
15
⁄
16
506
6
1
/
2
165
52
1321
21
533
21
5
/
8
549
15
1
/
2
394
10
250
90
2286
45
3
⁄
4
1162
23
13
⁄
16
605
8
203
64
1626
25
635
26
660
18
1
/
2
470
Size (DN)
DiMeNSioNS
WeighT
STRAiNeR
N1†
R
R
v
T
NRS
OSY
QT
Weight
in.
mm
in.
mm
in.
mm
in.
mm
in.
mm
lbs.
kgs.
lbs.
kgs.
lbs.
kgs.
lbs.
kgs.
2
1
⁄
2
65
10
254
4
102
16
406
3
76
167
76
170
77
154
70
28
13
3
80
10
254
5
127
16
406
3
76
167
76
170
77
162
73
34
15
4
100
12
305
6
152
19
3
⁄
4
502
6
152
368
167
383
174
275
125
60
27
6
150
20
508
11
279
26
660
7
1
⁄
2
191
627
284
707
321
611
277
122
55
8
200
22
3
⁄
4
578
11
1
⁄
4
286
11
1
⁄
4
286
9
229
1201
545
1307
593
1419
644
247
112
10
250
28
711
12
1
⁄
2
318
12
1
⁄
2
318
10
1
⁄
4
260
2003
909
2073
940
2466
1119
370
168
†Dimension required for screen removal.
v
Quarter-turn (QT) valve dimensions.
††Service clearance for check assembly from center.