Specification

Materials
Body: Lead Free* brass
Disc: Silicone
Pressure — Temperature
Maximum Temperature: 180°F (82°C)
Maximum Working Pressure: 125psi (8.6 bar)
Installations
Atmospheric VB must be installed 6" above the highest point
on the downstream piping. There can be no shutoff valves
downstream of an AVB.
Approvals
Certified thru 1" (25mm) CSA
Dimensions — Weights
Pressure Loss
1001
B64.1.1
A
C
D
Capacities
kPa psi
83 12
69 10
55 8
41 6
28 4
14 2
0 0
SIZE WEIGHT
A B C D
in. in. mm in. mm in. mm in. mm oz. gm.
1
⁄4 1
3
⁄4 44 2
1
⁄4 57 1
1
⁄4 32 1 25 6 170
3
⁄8 1
3
⁄4 44 2
1
⁄4 57 1
1
⁄4 32 1 25 6 170
1
⁄2 2 50 2
3
⁄4 70 1
1
⁄2 38 1
1
⁄4 32 8 227
3
⁄4 2
1
⁄4 57 3 76 1
1
⁄2 38 1
1
⁄2 38 18 510
1 2
7
⁄8 73 3
5
⁄8 92 1
7
⁄8 48 1
3
⁄4 44 28 794
1
1
⁄4 2
7
⁄8 73 3
3
⁄4 95 1
7
⁄8 48 1
7
⁄8 48 34 964
1
1
⁄2 3
5
⁄8 92 4
1
⁄2 114 2
1
⁄4 57 2
1
⁄4 57 54 1531
2 4 100 5
1
⁄8 130 2
5
⁄8 67 2
1
⁄2 64 84 2381
2
1
⁄2 6
1
⁄2 165 7
1
⁄2 191 4
1
⁄2 114 3 76 256 7258
3 6
1
⁄2 165 8 200 4
5
⁄8 117 3
3
⁄8 86 274 7768
0 5 10 15 20 25 30 35 gpm
0 19 38 7 76 95 114 113 lpm
Flow Rate
Pressure Loss
kPa psi
83 12
69 10
55 8
41 6
28 4
14 2
0 0
0 10 20 30 40 50 60 70 80 gpm
0 38 76 114 152 190 228 266 304 lpm
Flow Rate
Pressure Loss
kPa psi
83 12
69 10
55 8
41 6
28 4
14 2
0 0
0 50 100 150 200 250 300 350 400 450 500 gpm
0 190 380 570 760 950 1140 1130 1520 1710 1900 lpm
Flow Rate
1", 1
1
/4", 1
1
/2"
1
/4" to
3
/4"
2", 2
1
/2", 3"
1
/4"
3
/8"
1
/2"
1"
1
1
/2"
1
1
/4"
2"
3"
2
1
/2"
3
/4"
ES-LF288A 1911 © 2019 Watts
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The information contained herein is not intended to replace the full
product installation and safety information available or the experience
of a trained product installer. You are required to thoroughly read all
installation instructions and product safety information before begin-
ning the installation of this product.
NOTICE