Product Overview

kPa psi
345 50
276 40
207 30
138 20
69 10
0
0 5 10 15 20 25 gpm
19 38 57 76 95 lpm
Pressure Drop
Flow
Flow curves are for reference. Actual flows may vary
depending on system temperatures and/or pressures.
***Flow curve with integral inlet filters check valves
Capacity***
Dimensions — Weights
THREAD
(UT)
SWEAT
(US)
CPVCPEX
D
D
D
D
D
QUICK-CONNECT
(QC)
'D'
A
B
C
Hot
Water
Inlet
Mixed Outlet
Cold
Water
Inlet
SIZE MODEL DIMENSIONS WEIGHT
A B C D
in. in. mm. in. mm. in. mm. in. mm. lbs. kg.
1
⁄2
LF1170-UT-M2
4
7
⁄8 124 5
7
⁄16 137 3
3
⁄16 80
5
⁄8 16 1.8 0.8
3
⁄4 4
7
⁄8 124 5
7
⁄16 137 3
3
⁄16 80
5
⁄8 16 2.4 1.1
1 5
5
⁄16 135 5
5
⁄8 143 3
3
⁄8 86
3
⁄4 20 3.0 1.4
1
⁄2
LF1170-US-M2
4
13
⁄16 123 5
3
⁄8 137 3
1
⁄8 80
5
⁄8 15 1.7 0.8
3
⁄4 5
5
⁄16 135 5
5
⁄8 143 3
3
⁄8 86
7
⁄8 22 2.3 1.0
1 5
13
⁄16 148 5
7
⁄8 149 3
5
⁄8 92 1
1
⁄8 28 2.9 1.3
1
⁄2
LF1170-PEX-M2
5
1
⁄4 133 5
9
⁄16 142 3
5
⁄16 85
13
⁄16 21 1.8 0.8
3
⁄4 5
1
⁄2 140 5
11
⁄16 145 3
7
⁄16 88
15
⁄16 24 2.5 1.1
1 5
7
⁄8 149 5
7
⁄8 150 3
5
⁄8 93 1
1
⁄8 29 3.1 1.4
1
⁄2
LF1170-CPVC-M2
4
3
⁄4 121 5
5
⁄16 136 3
1
⁄16 79
9
⁄16 14 1.6 0.7
3
⁄4 5
1
⁄4 133 5
9
⁄16 142 3
5
⁄16 85
13
⁄16 21 2.2 1.0
1 5
11
⁄16 144 5
13
⁄16 147 3
9
⁄16 90 1 26 2.6 1.2
1
⁄2
LF1170-QC-M2
6
5
⁄8 168 6
1
⁄4 159 4 102 1
1
⁄2 38 2.1 0.9
3
⁄4 6
15
⁄16 177 6
7
⁄16 163 4
3
⁄16 106 1
11
⁄16 42 2.8 1.3
1 7
1
⁄8 181 6
1
⁄2 165 4
1
⁄4 108 1
3
⁄4 44 3.5 1.6
Specifications
A Hot Water Temperature Control Valve shall be installed on water
heating equipment to provide tempered water to supply piping. Valve
shall have a Lead Free* copper silicon alloy body. Lead Free* ther-
mostatic valves shall comply with state codes and standards, where
applicable, requiring reduced lead content. The valve shall have inte-
gral check valves and operate so the thermostat controls the cold
and hot water ports. The valve shall be provided with solder (-US),
threaded (-UT), PEX (-PEX), Quick-Connect (-QC) or CPVC (-CPVC)
connections. Valve shall be ASSE Standard 1017** Listed. Valve shall
be a Watts Series LF1170-M2 or LFL1170-M2.
Pressure — Temperature
Minimum Supply Pressure (Static): 30psi (207 kPa)
Inlet Temperatures: hot inlet, 120°F – 200°F (49°C – 93°C),
cold inlet, 40°F – 85°F (4°C – 29°C)
Hot Water Inlet to Outlet Temperature Differential: 5°F (3°C)
above set point
LF1170-M2 Temperature Out: Field range: 90°F – 160°F (32°C – 71°C),
adjustable:Accuratewithin±3°F(1.7°C)
LFL1170-M2 Temperature Out: Field range: 60°F – 120°F (16°C – 49°C),
adjustable.Accuratewithin±3°F(1.7°C)
Maximum Temperature: 200°F (93°C)
Maximum Pressure: 150psi (10.3 bar)
Maximum Pressure Differential Between Hot and Cold Water
Supplies:
25%.
Approval: CSA B125 certified
Listing:ASSE1017andIAPMOUPC
Basic Construction
LOCKING
ADJUSTMENT CAP
ADAPTER
O-RING
STEM ASSEMBLY
O-RING
O-RING
BONNET ASSEMBLY
PLUNGER
SEAT
SPRING
THERMOSTAT
FUNNEL
UNION NUT
FILTER
WASHER
TAILPIECE
CHECK MODULE
BODY
FIBER WASHER
FILTER WASHER
ALLEN HEAD SCREW
ES-LF1170_LFL1170 1324 © 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
Material
Body: Lead Free* copper silicon alloy
Springs: Stainless steel
Thermostat Assembly: Copper
O-Rings: EPDM
Pistons: Polysulfone