Watts LFB6781 - Manual (Page 2)

H
C
I
J
E
L
S
T
Valve Seat Rating
Pressure
Temperature
Pressure Drop vs. Flow
Valve Torque Rating
Materials
Dimensions — Weights
Pressure Drop
A
B
C
D
H
I
H
K
J
E
G
F
A Handle Nut Zinc Plated Carbon Steel
B Handle Zinc Plated Carbon Steel with Vinyl Insulator
C Packing Nut Brass
D Stem Packing PTFE
E Thrust Bearing PTFE
F Stem
Stainless Steel
G Body Lead Free Copper Silicon Alloy
H Seats PTFE
I Ball Stainless Steel
J Adapter Lead Free Copper Silicon Alloy
K Body Seal PTFE (1 1 ⁄
4
" – 2")
SIzE DN RATING OPERATING TORquE
in. mm** Cv in./lbs. N-m
= 1 ⁄
4
, 3 ⁄
8
8-10 4.8 60 6.8
1 ⁄
2
15 4.8 60 6.8
3 ⁄
4
20 11 150 16.9
1 25 21 200 22.6
1 1 ⁄
4
32 33 250 28.2
1 1 ⁄
2
40 49 320 36.2
2 50 91 500 56.5
= Threaded only
LFB6780
SIzE (DN) DImENSIONS WEIGHT
C E H I J L S T
Center Center Radius Ball Orifice Dia. Solder End to End Diameter Center
to Handle to End of Handle Connection to Side
in. mm** in. mm in. mm in. mm in. mm in. mm in. mm in. mm in. mm lbs. kg.
1 ⁄
4
, 3 ⁄
8
, 1 ⁄
2
8,10,15 1 5 ⁄
8
41.3 1 1 ⁄
4
31.7 3 3 ⁄
4
95.3 1 ⁄
2
12.7 - - 2 9 ⁄
32
57.9 1 1 ⁄
4
31.7 1 1 ⁄
4
31.7 .66 .30
3 ⁄
4
20 1 3 ⁄
4
44.5 1 9 ⁄
16
39.7 3 3 ⁄
4
95.3 3 ⁄
4
19.1 - - 2 13 ⁄
16
71.4 1 19 ⁄
32
40.5 1 9 ⁄
16
39.7 1.00 .45
1 25 2 1 ⁄
16
52.4 1 7 ⁄
8
47.6 3 3 ⁄
4
95.3 1 25.4 - - 3 9 ⁄
16
90.5 2 1 ⁄
8
54.0 1 7 ⁄
8
47.6 1.88 .85
1 1 ⁄
4
32 2 13 ⁄
16
71.4 2 1 ⁄
16
52.4 5 1 ⁄
2
139.7 1 1 ⁄
4
31.8 - - 4 1 ⁄
8
104.7 2 3 ⁄
4
69.8 2 1 ⁄
16
52.4 4.00 1.81
1 1 ⁄
2
40 3 76.2 2 7 ⁄
32
56.3 5 1 ⁄
2
139.7 1 1 ⁄
2
38.1 - - 4 7 ⁄
16
112.7 2 3 ⁄
16
55.5 2 7 ⁄
32
56.3 5.50 2.49
2 50 4 101.6 2 11 ⁄
16
68.2 8 203.2 2 50.8 - - 5 3 ⁄
8
136.5 4 1 ⁄
16
103.2 2 11 ⁄
16
68.2 10.00 4.54
***LFB6781
1 ⁄
2
15 1 5 ⁄
8
41.3 1 1 ⁄
8
28.6 3 3 ⁄
4
95.3 1 ⁄
2
12.7 5 ⁄
8
15.8 2 5 ⁄
16
58.7 1 1 ⁄
4
31.7 1 1 ⁄
8
28.6 .66 .30
3 ⁄
4
20 1 3 ⁄
4
44.5 1 9 ⁄
16
39.7 3 3 ⁄
4
95.3 3 ⁄
4
19.1 7 ⁄
8
22.2 3 3 ⁄
16
80.9 1 19 ⁄
32
40.5 1 9 ⁄
16
39.7 1.00 .45
1 25 2 1 ⁄
16
52.4 1 15 ⁄
16
49.1 3 3 ⁄
4
95.3 1 25.4 1 1 ⁄
8
28.6 3 7 ⁄
8
98.4 2 1 ⁄
8
54.0 1 15 ⁄
16
49.1 1.88 .85
***See Solder Instructions on front.
NOTE: Seat rating based on pressure entering side port.
50 100 150 200 250 300 350 400 450°F
-17.8 10 38 66 93 121 149 177 204 232°C
bar psi
41.34 600
34.45 500
27.56 400
20.67 300
13.78 200
6.90 100
3.45 50
ES-LFB6780 1323 © 2013 Watts
USA: Tel: (978) 688-1811 • Fax: (978) 794-1848 • www.watts.com
Canada: Tel: (905) 332-4090 • Fax: (905) 332-7068 • www.watts.ca
A Watts Water Technologies Company
Flow
**Metric Dimensions are nominal pipe diameter. This product is produced with NPT threaded or solder end connections.
bars psi
1.4 20
.7 10
.6 8
.4 6
.3 4
.2 3
.1 2
.07 1
.06 .8
.04 .6
.03 .4
.02 .3
.01 .2
.01 .1 gp
ml
pm
1000
3800
800
3040
600
2280
400
1520
300
1140
200
760
100
380
80
304
60
228
40
152
30
114
20
76
10
38
8
30.4
6
22.8
4
15.2
3
11.4
2
7.6
1
3.8
3 4
"
1" 1 1 2
"
2" 1
/ 4
", 3 8
", 1 2
"
/
/
/
/ 4
1 1
"
/