Product Overview
For Commercial Water Heater Applications
ES-40-140-240-340
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The combined 2-in-1 Temperature & Pressure Relief Valve provides the
least expensive and proven means for protection against both excessive
temperature and pressure emergency conditions.
Fully automatic temperature and pressure relief protection for domestic
hot water supply tanks and heaters based on the latest ANSI Z21.22
Listing requirements for temperature discharge capacity.
40XL with test lever and extension thermostat for installation in hot
water outlet within the allowable distance from the top of the tank based
on latest ANSI Z21.22. Sizes
3
⁄4" and 1" (20 – 25mm).
40L with test lever and short thermostat for installation directly in avail-
able tank tappings. Sizes
3
⁄4" and 1" (20 – 25mm).
Series 140, N240 and 340 have the same basic body construction and
advanced design features as the Series 40 and are identical to the Series
40 except for discharge capacity and size of inlet and outlet connections.
For complete specifications (including specifications for the Series 40)
see other side. Sizes 1", 1
1
⁄4", 1
1
⁄2" and 2" (25, 32, 40 and 50mm).
Features
manufactured by Watts
thermo-bonded coating
stainless steel thermostat tube
Specifications
Temperature & Pressure Relief Valves
temperature and pressure relief valve to protect the heater from exces-
sive pressure and excessive temperature. The device shall be certified
Watts Series 40, 140, 240 or 340.
Standards
FHA requirements and ANSI Z21.22 in addition to Military Spec. MIL-V-
Pressure – Temperature
Pressure range 75 – 150psi (5.2 – 10.3 bar)
Standard setting 75, 100, 125 and 150psi
(5.2, 6.9, 8.6 and 10.3 bar)
Series 40L and 40XL
Series 140XL
Series N240X
Series 340
Series 40, 140, 240 & 340
Automatic Re-seating T&P Relief Valves
NOTICE
Inquire with governing authorities for local installation requirements
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.
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 manu-
ally 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
!