Materials
Body:
1
⁄2" – 2" (15 – 50mm) Lead Free* Brass
2
1
⁄2" (65mm) Cast Iron
Spring cage: Iron
Bottom plug: Lead free brass
Bottom plug gasket: Buna-N
Seat: Stainless steel
Seat gasket: Buna-N
Adjusting screw: Steel
Locking nut: Brass
Spring button: Cast Iron
Spring: Zinc-plated wire
O-Ring: Buna-N
Diaphragm plate: Cast Iron
Diaphragm: Reinforced Buna-N
Disc holder: Lead free copper silicon alloy
Nameplate: Aluminum
Pressure – Temperature
Temperature Range: 33°F – 160°F (0.5°C – 71°C)
Maximum Working Pressure: 300psi (20.7 bar)
Adjustable Reduced Pressure Range: 25-75psi (172 – 517 kPa)
Standard Reduced Pressure Setting: 50psi (345 kPa)
Standards
1
⁄2" – 2" (15 – 50mm) meets requirements of ASSE Standard 1003;
(ANSI A112.26); CSA Standard B356; Southern Standard Plumbing Code,
Military Standard MIL-V-18146B and listed by IAPMO.
Options
B Builtin bypass feature
LP Low pressure range 10-35psi (69 – 241 kPa)
HP High pressure range, reduced range shown below:
Capacity
Series LF223 sizes
1
⁄2",
3
⁄4", 1" (15, 20, 25mm)
Series LF223 sizes 1
1
⁄4", 1
1
⁄2", 2", 2
1
⁄2" (32, 40, 50, 65mm)
SIZE (DN) DIMENSIONS WEIGHT
A (LF223) As (LF223S) C D N (LF223S) LF223 LF223S
in. mm in. mm in. mm in. mm in. mm in. mm lbs. kgs. lbs. kgs.
1
⁄2 15 4
1
⁄4 108 9 229 6
1
⁄4 159 2 50 2
1
⁄2 64 4.5 2.0 6 2.7
3
⁄4 20 4
1
⁄4 108 9 229 6
1
⁄4 159 2 50 2
1
⁄2 64 5 2.3 6.5 2.9
1 25 4
3
⁄4 121 10
15
⁄16 262 6
1
⁄2 165 2
1
⁄8 54 2
15
⁄ 16 75 7 3.2 9.5 4.3
1
1
⁄4 32 5 127 11
15
⁄16 287 6
3
⁄4 172 2
3
⁄4 70 3 76 9 4.1 12 5.4
1
1
⁄2 40 6
3
⁄4 171 14
3
⁄4 375 97⁄8 251 2
3
⁄4 70 3
7
⁄16 87 19.5 8.8 23.5 10.7
2 50 8 203 16
3
⁄4 425 10
3
⁄4 273 3
3
⁄8 86 4 102 30 13.6 37.5 17.0
2
1
⁄2 65 9 229 20
1
⁄8 511 10
3
⁄4 273 3
3
⁄8 86 5 127 32.5 14.8 59 26.8
REDUCED PRESSURE RANGE - SUFFIX HP
Size Range
in. mm psi bar
1
⁄2 15 50-145 3.4-10.0
3
⁄4 20 50-145 3.4-10.0
1 25 50-145 3.4-10.0
1
1
⁄4 32 50-120 3.4-8.3
1
1
⁄2 40 50-95 3.4-6.6
2 50 50-95 3.4-6.6
2
1
⁄2 65 50-95 3.4-6.6
As
N
A
C
D
Dimensions — Weights
lpm gpm
304 80
266 70
227 60
190 50
151 40
114 30
76 20
38 10
0 0
0 5 10 15 20 psi
0 34 69 103 138 kPa
lpm gpm
950 250
760 200
570 150
379 100
190 50
0 0
0 5 10 15 20 25 30 psi
0 34 69 103 138 172 207 kPa
Flow
Flow
Pressure Drop
Pressure Drop
ES-LF223 1412 © 2014 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
223
0
10
20
30
40
50
60
70
80
0 5 10 15 20
PRESSURE FALL OFF - PSI
223
0
50
100
150
200
0 5 10 15 20 25 30
PRESSURE FALL OFF - PSI
1
⁄2"
3
⁄4"
1"
223
0
10
20
30
40
50
60
70
80
0 5 10 15 20
PRESSURE FALL OFF - PSI
223
0
50
100
150
200
0 5 10 15 20 25 30
PRESSURE FALL OFF - PSI
1
1
⁄2"
1
1
⁄4"
2"
2
1
⁄2"
(2 pages)
(2 pages)
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