ES-40, 140, 240, 340 0130
Printed in U.S.A.
Direct Side Tapping
FOR EXTERNAL FLUE HEATERS
Use extra length extension thermostat to extend into water storage tank.
FOR INTERNAL FLUE HEATERS
Use short or standard length thermostat. Vertical discharge line must be
installed with its direction downward.
Max. 6"
(152mm)
GENERAL RECOMMENDATIONS
†
6"
(152mm)
Temperature and Pressure Relief Valves should be inspected AT LEAST ONCE EVERY THREE YEARS, and replaced, if necessary, by a licensed plumbing con-
tractor or qualified service technician, to ensure that the product has not been affected by corrosive water conditions and to ensure that the valve and discharge
line have not been altered or tampered with illegally. Certain naturally occurring conditions may corrode the valve or its components over time, rendering the
valve inoperative. Such conditions can only be detected if the valve and its components are physically removed and inspected. Do not attempt to conduct an in-
spection on your own. Contact your plumbing contractor for a reinspection to assure continuing safety.
© Watts Regulator Co., 1997
Thermostat Dimensions (in.)
Inlet X Length (in.) CSA
Type Outlet (Below Inlet Height Weight Temp. Steam
**ASME Pressure Steam Rating BTU/HR
No. Model (in.) thread) (Less Thermostat) Width Lbs. Rating BTU/HR @75psi set pres. @100psi set pres. @125psi set pres. @150psi set pres.
40L-3 M15
3
⁄4 M x
3
⁄4 F3 5
5
⁄8 2
5
⁄8 1
3
⁄4 180,000 777,600 997,600 1,217,600 1,437,600
40XL-5 M15
3
⁄4 M x
3
⁄4 F5 5
5
⁄8 2
5
⁄8 1
3
⁄4 200,000 777,600 997,600 1,217,600 1,437,600
40XL-8 M15
3
⁄4 M x
3
⁄4 F8 5
5
⁄8 2
5
⁄8 1
3
⁄4 200,000 777,600 997,600 1,217,600 1,437,600
140S-3 M15
3
⁄4 F x
3
⁄4 F3 5
5
⁄8 2
5
⁄8 1
3
⁄4 180,000 777,600 997,600 1,217,600 1,437,600
140X-5 M15
3
⁄4 F x
3
⁄4 F5 5
5
⁄8 2
5
⁄8 1
3
⁄4 200,000 777,600 997,600 1,217,600 1,437,600
140X-8 M15
3
⁄4 F x
3
⁄4 F8 5
5
⁄8 2
5
⁄8 1
3
⁄4 200,000 777,600 997,600 1,217,600 1,437,600
40L-2 M15 1M x 1F 2 6
1
⁄4 2
3
⁄4 2
1
⁄4 450,000 1,155,000 1,481,000 1,808,000 2,134,000
40XL-4 M15 1M x 1F 4 6
1
⁄4 2
3
⁄4 2
1
⁄4 500,000 1,155,000 1,481,000 1,808,000 2,134,000
40XL-7 M15 1M x 1F 7 6
1
⁄4 2
3
⁄4 2
1
⁄4 500,000 1,155,000 1,481,000 1,808,000 2,134,000
*140S-3 M15 1F x 1F 3 5
1
⁄2 32
1
⁄4 570,000 1,670,000 2,140,000 2,610,000 3,085,000
*140X-6 M15 1F x 1F 6 5
1
⁄2 32
1
⁄4 670,000 1,670,000 2,140,000 2,610,000 3,085,000
*140X-9 M15 1F x 1F 9 5
1
⁄2 32
1
⁄4 670,000 1,670,000 2,140,000 2,610,000 3,085,000
*N240X-6 M2 1F x 1F 6 6
5
⁄8 3
3
⁄8 2
3
⁄4 730,000 2,195,000 2,817,000 3,438,000 4,059,000
*N240X-9 M2 1F x 1F 9 6
5
⁄8 3
3
⁄8 2
3
⁄4 730,000 2,195,000 2,817,000 3,438,000 4,059,000
*N241X-5 M2 1
1
⁄4 M x 1F 5 6
5
⁄8 3
3
⁄8 2
3
⁄4 730,000 2,195,000 2,817,000 3,438,000 4,059,000
*N241X-8 M2 1
1
⁄4 M x 1F 8 6
5
⁄8 3
3
⁄8 2
3
⁄4 730,000 2,195,000 2,817,000 3,438,000 4,059,000
*340-3 M2 1
1
⁄2 F x 1
1
⁄2 F3 9
3
⁄4 4
1
⁄2 7 1,150,000 3,450,000 4,426,000 5,403,000 6,379,000
*340X-8 M4 1
1
⁄2 F x 1
1
⁄2 F8 9
3
⁄4 4
1
⁄2 8 1,150,000 3,450,000 4,426,000 5,403,000 6,379,000
*342-3 M4 2 M 1
1
⁄2 F3 9
3
⁄4 4
1
⁄2 7 1,150,000 3,450,000 4,426,000 5,403,000 6,379,000
*342X-8 M4 2 M x 1
1
⁄2 F8 9
3
⁄4 4
1
⁄2 8 1,150,000 3,450,000 4,426,000 5,403,000 6,379,000
*Standardly furnished with stainless steel thermostat tube. M = Male F = Female
**ASME capacities are steam pressure ratings and do not reflect the CSA temperature relieving capacity of the valves for selection purposes.
For gas, electric or oil-fired storage water heaters between 180,000 to 200,000 BTU/Hr. rating: Use
3
⁄4" (19mm) Series 40, 140 tested under ANSI
Z21.22 with ratings as certified and listed by CSA.
For gas or oil-fired storage water heaters between 200,000 and 730,000 BTU/Hr. rating and for compliance with applicable water heater labeling re-
quirements: Use 1" (25mm) 40, 140, N240 Series tested under ANSI Z21.22 with ratings as certified and listed by CSA.
For installations of gas or oil-fired hot water supply boilers over 730,000 BTU/Hr. output heating domestic water and for steam coil storage water
heaters:
Use Series 340, 342 tested under ANSI Z21.22 with rating as certified and listed by CSA.
SPECIAL MODEL; No. 340X-8 M4Z 1
1
⁄2" (38mm) size only. Pressure setting 175 psi (5.17 bars). Temp. 210°F (98.9°C). Certified by CSA only.
For Heaters with Direct Top
Use standard or extra length extension thermostat.
Max. 6"
Insulation
Discharge
Line
†
†
†LL40XL and LLL40XL valves with extended inlet shanks should be used for water heaters that have extra thick insulation, Ask for ES-LL/LLL-40XL.
Discharge Line
Cold
Hot
T&P Relief Valve
Max.
6"
Insulation
The combined 2 -in -1 Temperature & Pressure relief valve provides the least ex-
pensive 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" (19-25mm).
40L with test lever and short thermostat for installation directly in available tank
tappings. Sizes:
3
⁄
4
" and 1" (19-25mm).
Series 140, N240 and 340 have the same basic body construction and advanced
design features as the 40 Series and are identical to the 40 Series except for dis-
charge capacity and size of inlet and outlet connections. For complete specifica-
tions (including specifications for the 40 Series) see other side. Sizes: 1", 1
1
⁄
4
",
1
1
⁄
2
" and 2" (25, 32, 38 and 50mm).
FEATURES
• Bronze body construction.
• Non-mechanical seat-to-disc alignment.
• Thermostat is accurate and proven. Exclusively
designed and manufactured by Watts.
• Tamper-resistant bonnet screws.
• Series 40 and 140 feature a unique thermostat with a special
thermo-bonded coating.
• 1" (25mm) and above sizes Model M15, M2 and M4 are standardly
furnished with stainless steel thermostat tube.
SPECIFICATIONS
Temperature & Pressure Relief Valves
Each hot water storage heater shall be equipped with an automatic temperature
and pressure relief valve to protect the heater from excessive pressure and ex-
cessive temperature. The device shall be certified as meeting the requirements of
ASME low pressure heating boiler code and ANSI Z21.22. The BTU discharge ca-
pacity of the device shall be in excess of the BTU input rating of the heater. Watts
Regulator Company Series 40, 140, 240 and 340.
STANDARDS
ASME Rated, ANSI Z21.22, Design certified and listed by CSA and meet current
FHA requirements and ANSI Z21.22 in addition to Military Spec. MIL-V-136-12D,
Type I .
PRESSURE - TEMPERATURE
Temperature relief 210°F (98.9°C).
Pressure range 75-150 psi (5.17-10.34 bars).
Standard setting 75, 100, 125 and 150 psi (5.17, 6.9, 8.61 and 10.34 bars).
Series 40, 140, 240 & 340
Automatic Re-seating T&P Relief Valves
ES-40, 140, 240, 340
Following installation, the valve lever MUST be operated AT LEAST
ONCE A YEAR by the water heater owner to ensure that
the water-
ways are clear. Certain naturally occurring mineral de
posits may
adhere to the valve, blocking waterways, rendering it inoperative.
WHEN THE LEVER IS OPERATED, HOT WATER WILL DISCHARGE IF
THE WATERWAYS ARE CLEAR. PRECAUTIONS MUST BE TAKEN TO
AVOID PERSONAL INJURY FROM CONTACT WITH HOT WATER AND
TO AVOID PROPERTY DAMAGE.
Watts product specifications in U.S. customary units and metric are
approximate and are provided for reference only. For precise mea-
surements, please contact Watts Technical Service. Watts reserves
the right to change or modify product design, construction, specifica-
tions, or materials without prior notice and without incurring any obli-
gation to make such changes and modifications on Watts products
previously or subsequently sold.
Series 40L
and 40XL
Series 140X
Series N240X
Series 340
Job Name Contractor
Job Location Approval
Engineer Contractor’s P.O. No.
Approval Representative
For Commercial Water Heater Applications
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