Product Overview

Dimensions & Weights
Below are the nominal dimensions and physical weights for the
Series LF860 size 2
1
⁄2" through 10". Allowances must be made
for normal manufacturing tolerances. Please visit our website to
download a copy of this product’s installation instructions, or
contact your local FEBCO Representative for more information.
LF860
SIZE (DN) DIMENSIONS WEIGHT***
A B C D E* F** G H NRS OSY
in. mm in. mm in. mm in. mm in. mm in. mm in. mm in. mm in. mm lbs. kg. lbs. kg.
2
1
⁄2 65 40
3
⁄4 1035 25
1
⁄2 648 10 254 10 254 12
5
⁄8 321 16
3
⁄8 416 4
1
⁄2 114 7
1
⁄8 181 250 113 254 115
3 80 41
7
⁄8 1064 25
5
⁄8 651 10 254 10 254 12
7
⁄8 327 22
1
⁄4 565 4
1
⁄2 114 7
3
⁄8 187 276 125 280 127
4 100 46
1
⁄4 1175 28 711 10
1
⁄8 257 10
1
⁄8 257 14
3
⁄8 365 23
1
⁄4 591 5
1
⁄2 140 8
1
⁄8 206 335 152 347 157
6 150 56 1422 34
3
⁄4 883 12
3
⁄4 324 11
1
⁄8 283 18
7
⁄8 479 30
1
⁄8 765 6
1
⁄2 165 9
7
⁄8 251 503 228 523 237
8 200 65 1651 41
3
⁄4 1061 15
5
⁄8 397 12
1
⁄4 311 23
1
⁄2 597 37
3
⁄4 959 7 178 11
1
⁄8 283 807 366 835 379
10 250 72
5
⁄8 1845 46
3
⁄8 1178 15
5
⁄8 397 12
3
⁄8 314 27
1
⁄2 699 48 1219 9 229 12
3
⁄8 314 1205 547 1243 564
* Indicates nominal dimensions with NRS Gate Valves
** Indicates nominal dimensions with OSY Gate Valves (Full Open Position)
*** Indicates weight of complete Backflow Assemblies with specified Gate Valves
The gap drain is not designed to catch the maximum discharge possible from the
relief valve. The installation of the FEBCO air gap with the drain line terminating
above a floor drain will handle any normal discharge or nuisance spitting through
the relief valve. However, floor drain size may need to be designed to prevent
water damage caused by a catastrophic failure condition. Do not reduce the size
of the drain line from the air gap fitting.
A
B
E*
C
D
F**
E*
F**
D
A
B
C
G
H