Specification Sheet

For Water Heater and Hot Water Storage Tank Applications
ES-10L/100XL
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Series 1L, 1XL, 10L
and 100XL
Temperature and Pressure
Relief Valves
A.S.M.E Rated*, CSA Listed. Self-closing T&P Relief Valves
for Water Heaters up to 105,000 BTU/Hr.
The combined 2 in 1 T&P relief valve provides the least expen-
sive and proven means for protection against both excessive
temperature and pressure emergency conditions.
Provides fully automatic temperature and pressure relief protec-
tion for hot water storage tanks and heaters up to 105,000
BTU/HR. Series 10L furnished with test lever and short thermo-
stat for installation directly in tank tapping. Series 100XL
furnished with test lever and extension thermostat for installa-
tion in the hot water outlet line or directly in the tank tapping.
Temperature sensing element must be immersed in the water
within the top 6" (152mm) of the tank. Male inlet and female
outlet. Temperature relief 210°F (99°C). Standard settings 75,
100, 125, 150psi (5.3, 7.0, 8.8, 10.6 bar).
Features
•Series1L,1XLSize
1
⁄2" (15mm)
10L,100XLSize
3
⁄4" (20mm)
•A.S.M.E.Rated*,CSAListed
•Featuresauniquethermostatwithspecial
thermo-bonded coating
•1L&1XL–Bronzebody
10L & 100XL – Brass body
•Stainlesssteelspring
•Thermostatisaccurateandproven.Exclusivelydesigned
and manufactured by Watts
Options
•Fortanksandheaterswithextrathickinsulation,sendfor
literature ES-SL100XL/L100XL/LL100XL/LLL100XL
•Series100XL-8with8"(200mm)extensionthermostat
•SOLAR-ModelZ11forstainlesssteellever&180°F(82°C)
thermostat
•Series1L,1XLSize
1
⁄2" (15mm): For both temperature and
pressure relief protection. Series 1L has short thermostat and
test lever. Series 1XL has extension thermostat with thermo-
bonded coating. Also available with 8" (200mm) extension
thermostat
Specifications
T&P valves
Each water heater and hot water storage tank shall be
equippedwithaCSAandA.S.M.E.Rated*automatictem-
perature and pressure relief valve to protect the heater from
excessive pressure and temperature. The device shall be ANSI
Z21.22certified.TheBTUdischargecapacityofthedeviceshall
be in excess of the BTU input rating of the heater. Watts Series
1L, 1XL, 10L or 100XL.
Maximum system operating pressure must not exceed 75% of
valve set pressure.
100XL
* Series 1L and 1XL Valves are not A.S.M.E. Listed or Rated.
10L
NOTICE
Following installation, The valve lever MUST be operated
AT LEAST ONCE A YEAR to ensure that the water-ways
are clear. Certain naturally occurring mineral deposits may
adhere to the valve, rendering it inoperative. When manually
operating the lever, water will discharge and precautions must
be taken to avoid contact with hot water
and to avoid water damage. BEFORE operating lever, check
to see that a discharge line is connected to this valve directing
the flow of hot water from the valve to a proper place of disposal
otherwise personal injury may result. If no water flows, valve is
inoperative. TURN OFF THE WATER HEATER AND CALL A
PLUMBER IMMEDIATELY.
This device is designed for emergency safety relief and shall not
be used as an operating control.
WARNING
!
NOTICE
Inquire with governing authorities for local installation
requirements
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.