Submittal Sheet

Recommended Installation
Temperature - Pressure
• Max. Temperature 210°F (99°C)
• Max. Pressure 150psi (10.3 bar)
Capacity
Basic Construction
** Balancing valve should be installed in cold water line to hot water extender tem-
pering valve, as shown, to help compensate for pressure drop through heater.
† Note: Valves listed to ASSE Standard 1016 such as Watts model LFMMV, LFL111
or LFUSG should be used at xtures to prevent possible injury.
Dimensions - Weight
kPa psi
69 10
62 9
55 8
48 7
41 6
34 5
28 4
21 3
14 2
7 1
0 0
0 1 2 3 4 5 6 7 8 9 10 gpm
0 4 8 11 15 19 23 27 30 34 39 lpm
1
⁄2" (15mm)
3
⁄4" (20mm)
Flow
Pressure Drop
Dial
Adjustment
Cap
Replaceable Ther-
mostat
interchange-
able in all four models
Sweat or
Threaded
Connections
Lead Free
*
Brass Body
Heavy Stainless
Steel Spring
Watts Vacuum
Relief Vacuum
Cold
Watts T.&P.
Relief Valve
Drain
Tempered
LF70A
**
Hot to Appli-
ances
Water Heater
8" - 12"
(200 - 300mm)
Watts T & P Relief Valve
Drain
Hot
Water Boiler
Tankless Heater
Pressure relief valve
meeting latest A.G.A.
Standard
Hot to
Appliances
Tempered
Hot
8" - 12"
(200 - 300mm)
Cold
Watts Check Valve
LF70A
**
▼
▼
▼
▼
▼
▼
▼
▼
▼
▼
▼
▼
▼
▼
▼
▼
▼
▼
▼
▼
▼
▼
∆P
†
†
Size (DN) DimeNSioNS Weight
A B D *
in. mm CoNNeCtioN in. mm in. mm in. mm in. mm lbs. kg.
LF70A-F, LFL70A-F
1
⁄2 15 Sweat 2
1
⁄32 52 3
11
⁄16 94 2
3
⁄16 56
15
⁄16 24
3
⁄4 .3
LF70A-T, LFL70A-T
1
⁄2 15 Threaded 2
7
⁄16 62 3
7
⁄8 98 2
21
⁄32 67
15
⁄16 24 1 .5
LF70A, LFL70A
3
⁄4 20 Sweat 2
3
⁄4 69 4
1
⁄8 105 2
27
⁄32 72 1
3
⁄32 28 1 .5
LF70A-T, LFL70A-T
3
⁄4 20 Threaded 2
3
⁄4 69 4
1
⁄8 105 2
27
⁄32 72 1
3
⁄32 28 1
1
⁄4 .6
D
*
A
B
CAUTION: NEED FOR PERIODIC INSPECTION
Periodic inspection by a licensed contractor is recommended. Corrosive water conditions, temperatures
over 210°F (99°C), unauthorized adjustments or repair could render the valve ineffective for service intended.
Regular checking and cleaning of thermostat assembly helps to assure maximum life and proper product
function. Frequency of cleaning depends upon local water conditions. *See Warning on reverse side.
ES-LF70A 0940
© 2009 Watts
USA: 815 Chestnut St., No. Andover, MA 01845-6098; www.watts.com
Canada: 5435 North Service Rd., Burlington, ONT. L7L 5H7; www.wattscanada.ca
A Watts Water Technologies Company