8/8/2019 Model LFL111 Specification Sheet

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Model LFL111 Thermostatic Mixing Valve is ideal for supplyingsinks, showers or lavatories with tempered water in commercial,educational and institutional environments such as schools,

restaurants, hospitals, nursing homes and public restrooms. TheLFL111 features Lead Free* construction to comply with LeadFree* installation requirements. This thermostatically modulatedmixing valve can be used anywhere preset water temperatureis required for point-of-use. Its tamper resistant cover makes itespecially useful for exposed “under-the-sink” installations.

Features

• High Flow Rate - supplies fixtures or lavatories with up to 10 gpm (38 lpm) of pre-set, tempered water

• Wall Mount Style - can be secured to wall or cabinet

• Easy to Install - installs easily into existing water lines

• Commercial Construction - Lead Free* brass body andreplaceable, advanced polymer temperature-regulating mech-

anism ensure long life

• Tamper-Resistant Cover - protective polypropylene cover closed by hexagon socket screw limits access to temperatureregulating mechanism to protect from end-user tampering inexposed locations

Specifications

 A Thermostatic Mixing Valve shall be installed on the hot watersupply to fixture(s) as shown on the diagram below. The valveshall be ASSE Standard 1016, 1069 or 1070 approved andcontrol the temperature of the hot water to the fixture(s). Thevalve shall have 1 ⁄ 2" (15mm) female NPT inlet and outlet con-nections. Body shall be constructed using Lead Free* brassmaterial. Thermostatic mixing valve shall comply with state

codes and standards, where applicable, requiring reduced leadcontent. The valve shall have integral mounting holes to enablethe valve to be secured to a wall or suitable enclosure. Thevalve shall include a tamper resistant thermoplastic enclosure toprotect against unauthorized adjustment of the outlet tempera-ture or removal of mounting fasteners. The valve shall be of asingle replaceable cartridge design to allow service or repair of the valve without removal of the valve from the system pipingor disassembly of internal valve components. The ThermostaticMixing Valve(s) shall be a Watts Model LFL111.

Model LFL111Lead Free* ThermostaticMixing Valve

Size: 1 ⁄ 2" (15mm)

Model LFL111

ES-LFL111

Typical Installation ASSE 1070

 For Point of Use Applications

ColdHot

Job Name

Job Location

Engineer

 Approval

Contractor

Contractor’s P.O. No.

 Approval

Representative

Triple Listed!ASSE 1016,

ASSE 1069 & ASSE 1070

Watts product specifications in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements,

please contact Watts Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials with-

out prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.

LEAD FREE*

*The wetted surface of this product contacted by consumable water contains less than one quarter of one percent (0.25%) of lead by

weight. 

8/8/2019 Model LFL111 Specification Sheet

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Standards

Materials

Body: Lead Free* Brass

O-rings: EPDM

Cartridge: Polysulfone

Cover: Polypropylene

J

K 

F

E

D

MoDEL InLET SIzE ouTLET SIzE DIMEnSIonS WEIgHT

D E F J K 

in. mm in. mm in. mm in. mm in. mm in. mm in. mm lbs. kgs.

LFL111 1 ⁄ 2 15 1 ⁄ 2 15 215 ⁄ 16 74 315 ⁄ 16 101 13 ⁄ 4 44 37 ⁄ 8 98 11 ⁄ 16 17 3.3 1.5

* With 50% reduction of supply pressure

 Application Note:

This LFL111 valve is not factory pre-set and can be adjusted to deliver water attemperatures exceeding 110°F (43°C). Consequently, after installing the WattsLFL111 Thermostatic Mixing Valve, the installer should always check the outletwater temperature. Further, check valves and strainers must be installed in thehot and cold water supply lines to this valve.

 ASSE 1016-1996, ASSE 1069, ASSE 1070 Listed.

ColdHot

LFL111

Mixed

Typical Installation ASSE 1069 Pressure-Temperature

Minimum Pressure: 15psi (103 kPa)

Recommended Inlet Pressure: 30 – 60psi (207 – 414 kPa)

Working Pressure: 125psi (8.6 bar)

Inlet Temperatures: hot inlet: 120°F – 180°F (49°C – 82°C) cold inlet: 33°F – 85°F (0.5°C – 29°C)

Minimum Differential  Temperature: 10°F (-12°C)

 Temperature Out: Field range: 80°F – 120°F (27°C – 49°C) adjustable by contractor. Accurate within ±3°F (±1.7°C)

Dimensions - Weight

Flow Capacity

0 2.5 5 7.5 10 12.5 15 gpm

0 9.5 19 28.5 38 47.5 57 lpm

kpa psi

621 90

517 75

414 60

310 45

207 30

103 15

ES-LFL111 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