For Water Heater and Hot Water Storage Tank Applications
ES-10L/100XL
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IMPORTANT: INQUIRE WITH GOVERNING AUTHORITIES
FOR LOCAL INSTALLATION REQUIREMENTS
10L
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 ther-
mostat 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
• An all bronze 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 - Series 100XL or 1XL; specify Model Z9 for stainless
steel lever and pin for outside solar applications. Model Z11
for 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 tempera-
ture and pressure relief valve to protect the heater from exces-
sive 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
Regulator Company No. 1L, 1XL, 10L or 100XL.
WARNING: 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 dis-
posal 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.
100XL
* Series 1L and 1XL Valves are not A.S.M.E. Listed or Rated.
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
without prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.
(1 pages)
(12 pages)
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