Watts LFUSG-B - Manual

Job Name ______________________________________ Contractor ______________________________________
Job Location ____________________________________ Approval ________________________________________
Engineer ________________________________________ Contractor’s P.O. No. ____________________________
Approval ________________________________________ Representative __________________________________
For Residential and Commercial Applications
Series LFUSG-B
Under Sink Guardian ®
The LFUSG-B-M2 Under Sink Guardian ® 3 ⁄
8
" (10mm) com-
pression and Quick-Connect fitting ther mo stat ic mix ing valves
maintain and limit hot water to desired se lect able temperature
between 80°F and 120°F (27°C and 49°C) with flow rates as low
as 0.5 gpm (1.9 lpm) and as high as 2.25 gpm (8.5 lpm). The
mix ing valve is listed to ASSE Standard 1070 for sin gle fix ture
applications and IAPMO cUPC. The LFUSG-B-M2 features Lead
Free* construction to comply with Lead Free* installation require-
ments. The su pe ri or flow char ac ter is tics of these valves provide
tem per a ture con trol with low pres sure drop. As an add ed fea-
ture, the LFUSG-B -M2 in cor po rates dual check valves to pro tect
against cross-flow and integral screens to filter out debris.
Features
• Lead Free* Brass body construction
• Installs easily between the stop valves and faucet
• Includes tamper resistant locking nut to prevent accidental mis-
adjustment
• Built-in check valves prevent migration of hot water to cold and
cold water to hot water piping
• Provided with cap for three port application
• Integral strainer with 40 mesh stainless steel screens to filter
out debris
Applications
The unit is intended for under sink installation to con trol the hot
water temperature and minimize the occurrence of ac ci den tal
scald ing. The water temperature must be adjusted by the in stall-
er using a thermometer to measure the hot water tem per a ture
at the faucet outlet. Maximum tem per a ture of 105°F (41°C) is
recommended.
Specifications
A Thermostatic Mixing Valve shall be installed on the hot water
supply to the fix ture. The valve shall be ASSE Standard 1070 and
IAPMO cUPC listed and control the temperature of the hot water.
It shall have a Lead Free* brass 4-port, “H” pattern body. Lead
Free* under counter thermostatic valves shall comply with state
codes and standards, where applicable, requiring reduced lead
content. The valve shall include integral check valves, integral
screens and an ad just ment nut with locking fea ture. The valve
shall be pro vid ed with 3 ⁄
8
" (10mm) male com pres sion or Quick-
connect fittings. The valve shall be Watts Series LFUSG-B.
For satin chrome finish specify – SC.
ASSE 1070 & IAPMO cUPC Listed
Materials
Body: Lead Free* Brass
Rubber Disc: Buna-N
O-rings: Buna-N
Spring: Stainless steel
Piston: Noryl ®
Thermostat: Copper
Approval
Pressure – Temperature
Minimum supply pressure: 30psi (207 kPa)
Hot inlet temperature: 120°F-180°F (49°C-82°C)
Cold inlet temperature: 39°F-80°F (3.8°C-27°C)
Minimum inlet temperature differential: 5°F (2.8°C)
Temperature range: 80°F-120°F (27°C-49°C)
Maximum pressure: 150psi (10.3 bar)
Minimum Flow: 0.5 gpm (2.2 l/m)
ES-LFUSG-B-M2
*The wetted surface of this product contacted by consumable water
contains less than one quarter of one percent (0.25%)
of lead by weight.
Noryl ® is a registered trademark of SABIC Innovative Plastics ® .
LEAD FREE
*
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.
ASSE 1070
LFUSG-B-M2 LFUSG-B-QC-M2