Materials, Pressure – temperature, Options – Watts LF25AUB-Z3 User Manual
Page 2: Standards, Capacity, Dimensions — weights, Dimension includes optional gauge, Sizes

G
Materials
Body:
Lead Free* copper silicon alloy
Seat:
1
⁄
2
"–1" (15–25mm) Replaceable engineered polymer
(10% glass filled Noryl
®
)
1
1
⁄
4
"–2" (32–50mm) Replaceable stainless steel
Integral Strainer:
Stainless steel
Diaphragm:
Reinforced EPDM with PTFE wetted surface
Valve Disc:
EPDM
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)
Options
Add Suffix
G
Gauge tapping,
1
⁄
8
" (3mm)
GG
Gauge tapping and 160psi (11 bar) gauge
HP
High pressure range 75–125psi (5.2 – 8.6 bar)
LP
Low pressure range 10–35psi (69 – 241 kPa)
Z7
400psi (27.6 bar) initial pressure,
1
⁄
2
" (20mm) models only
Noryl
®
is a registered trademark of SABIC Innovative Plastics™
SIZE (DN)
DIMENSIoNS
WEIGht
D
F *
G
E
T
E
S
E
P
F
QC
in. mm
in. mm in. mm in. mm in. mm in. mm in. mm lbs. kgs.
1
1
⁄
2
38 9
7
⁄
16
240 3
1
⁄
8
79
1
⁄
2
13
1
⁄
2
13 – – 1
1
⁄
2
38 3.5 1.6
1
1
⁄
2
38 9
7
⁄
16
240 3
1
⁄
8
79
1
⁄
2
13
3
⁄
4
19
5
⁄
8
16 1
11
⁄
16
42
3.5 1.6
1
3
⁄
4
44
1 0
7
⁄
16
266 3
5
⁄
8
92
5
⁄
8
16
15
⁄
16
23
13
⁄
16
21 1
3
⁄
4
45 6.5 3.0
2
1
⁄
8
54 11
7
⁄
16
291 3
5
⁄
8
92
5
⁄
8
16 1 25 – –
– – 10 4.5
2
3
⁄
8
60 11
15
⁄
16
304 4
1
⁄
16
103
5
⁄
8
16 1
1
⁄
16
28 – –
– – 10 4.5
3
1
⁄
4
83 13
11
⁄
16
348 4
3
⁄
4
121
5
⁄
8
16 1
5
⁄
16
34 – –
– – 15 6.8
* Dimension includes optional gauge
SIZE (DN)
DIMENSIoNS
A
A
1
A
2
B B
1
B
2
C
in. mm in. mm in. mm in. mm
in. mm in. mm in. mm in. mm
1
⁄
2
15 5
3
⁄
8
137 5
5
⁄
16
135 5
3
⁄
16
132
6
7
⁄
16
164 6
3
⁄
8
162 – –
7 178
3
⁄
4
20 5
5
⁄
16
135 5
1
⁄
2
140 5
1
⁄
4
133
6
1
⁄
2
165 6
7
⁄
8
175 6
3
⁄
4
171 7 178
1 25 6 152 6
1
⁄
4
159 5
7
⁄
8
149
7
3
⁄
8
187 7
13
⁄
16
198 7
11
⁄
16
195
8 203
1
1
⁄
4
32 8
3
⁄
4
222 8
15
⁄
16
227 8
1
⁄
4
210 10
3
⁄
4
273 11 279 – –
9 229
1
1
⁄
2
40 8
3
⁄
4
222 9 229 8
1
⁄
4
210 10
3
⁄
4
273 11
3
⁄
16
284 – –
9
1
⁄
2
241
2 50 9
1
⁄
4
235 10 254 8
3
⁄
4
222 11
5
⁄
16
287 12
11
⁄
16
322
–
–
11
1
⁄
4
286
Standards
Meets requirements of ASSE Standard 1003: ANSI A112.26.2: CSA Standard
B356; Southern Standard Plumbing Code and listed by IAPMO.
Military Standard MIL-V-18146B Type I.
Capacity
C (Max)
F* (Max)
D
B, B
1
, B
2
A, A
1
E
P
E
S
E
t
A
2
A - LF25AUB-Z3
A
1
- LF25AUB-S-Z3
A
2
- LF25AUB-DU-LF-Z3
B - LF25AUB-DU-Z3
B
1
- LF25AUB-S-DU-Z3
B
2
- LF25AUB-DU-thDxPEX-Z3
E
t
- NPt Engagement for tight joint
E
S
- Female sweat socket depth
E
P
- PEX end connection
F
QC
- Quick-Connect union
F
QC
Sizes:
1
⁄
2
",
3
⁄
4
", 1", 1
1
⁄
4
", 1
1
⁄
2
", 2"
(15, 20, 25, 32, 40, 50mm)
kPa psi
0 0
34 5
69 10
103 15
138 20
172 25
0 10 20 30 40 50 60 70 80 90
100
gpm
0 38 76 114 152 190 228 266 304 342 380
lpm
Reduced Pressure Drop
Flow
1
⁄
2
”
3
⁄
4
”
1”
2”
1
1
⁄
4
”
1
1
⁄
2
”
Dimensions — Weights
ES-LF25AUB 1318
© 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