ASME Rated Automatic Reseating T & P Safety Relief Valves- Series 40/140/240/340/342
¾" to 2" N.P.T.
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: ¾" and 1" (19-25mm).
40L with test lever and short thermostat for installation directly in available tank tappings. Sizes: ¾" 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 discharge capacity and size of inlet and outlet connections. For complete specifications (including specifications for the 40 Series) see other side. Sizes: 1", 1 ¼", 1 ½" and 2" (25, 32, 38 and 50mm).
Temperature and Pressure Relief Valves should be inspected AT LEAST ONCE EVERY THREE YEARS, and replaced, if necessary, by a licensed plumbing contractor 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 inspection on your own. Contact your plumbing contractor for a reinspection to assure continuing safety.
WARNING
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 deposits 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.
FEATURES
SPECIFICATIONS
DIMENSIONS - WEIGHT
- 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.
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 excessive temperature. The device shall be certified as meeting the requirements of ASME low pressure heating boiler code and ANSI Z21.22. The BTU discharge capacity of the device shall be in excess of the BTU input rating of the heater. Watts Regulator Company Series 40, 140, 240 and 340.
| Type No. | Model | Inlet X Outlet (in.) |
Thermostat Length (in.) (Below Inlet thread) |
Dimensions (in.) | Weight | CSA Temp. Steam Rating BTU/hr. |
** ASME Pressure Steam Rating BTU/HR | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Height (less thermostat) |
Width | @75psi ste pres. | @100psi set pres. | @125psi set pres. | @150psi set pres. | ||||||
| 40L-3 | M15 | ¾M x ¾F | 3 | 5 5/8 | 2 5/8 | 1 ¾ | 180,000 | 777,600 | 997,600 | 1,217,600 | 1,437,600 |
| 40XL-5 | M15 | ¾M x ¾F | 5 | 5 5/8 | 2 5/8 | 1 ¾ | 200,000 | 777,600 | 997,600 | 1,217,600 | 1,437,600 |
| 40XL-8 | M15 | ¾M x ¾F | 8 | 5 5/8 | 2 5/8 | 1 ¾ | 200,000 | 777,600 | 997,600 | 1,217,600 | 1,437,600 |
| 140S-3 | M15 | ¾F x ¾F | 3 | 5 5/8 | 2 5/8 | 1 ¾ | 180,000 | 777,600 | 997,600 | 1,217,600 | 1,437,600 |
| 140X-5 | M15 | ¾F x ¾F | 5 | 5 5/8 | 2 5/8 | 1 ¾ | 200,000 | 777,600 | 997,600 | 1,217,600 | 1,437,600 |
| 140X-8 | M15 | ¾F x ¾F | 8 | 5 5/8 | 2 5/8 | 1 ¾ | 200,000 | 777,600 | 997,600 | 1,217,600 | 1,437,600 |
| 40L-2 | M15 | 1M x 1F | 2 | 6 ¼ | 2 ¾ | 1 ¾ | 450,000 | 1,155,000 | 1,481,000 | 1,808,000 | 2,134,000 |
| 40XL-4 | M15 | 1M x 1F | 4 | 6 ¼ | 2 ¾ | 1 ¾ | 500,000 | 1,155,000 | 1,481,000 | 1,808,000 | 2,134,000 |
| 40XL-7 | M15 | 1M x 1F | 7 | 6 ¼ | 2 ¾ | 1 ¾ | 500,000 | 1,155,000 | 1,481,000 | 1,808,000 | 2,134,000 |
| *140S-3 | M15 | 1F x 1F | 3 | 5 ½ | 3 | 2 ¼ | 570,000 | 1,670,000 | 2,140,000 | 2,610,000 | 3,085,000 |
| *140X-6 | M15 | 1F x 1F | 6 | 5 ½ | 3 | 2 ¼ | 670,000 | 1,670,000 | 2,140,000 | 2,610,000 | 3,085,000 |
| *140X-9 | M15 | 1F x 1F | 9 | 5 ½ | 3 | 2 ¼ | 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 ¾ | 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 ¾ | 730,000 | 2,195,000 | 2,817,000 | 3,438,000 | 4,059,000 |
| *N241X-5 | M2 | 1 ¼M x 1F | 5 | 6 5/8 | 3 ³/8 | 2 ¾ | 730,000 | 2,195,000 | 2,817,000 | 3,438,000 | 4,059,000 |
| *N241X-8 | M2 | 1 ¼M x 1F | 8 | 6 5/8 | 3 ³/8 | 2 ¾ | 730,000 | 2,195,000 | 2,817,000 | 3,438,000 | 4,059,000 |
| *340-3 | M2 | 1 ½F x 1 ½F | 3 | 9 ¾ | 4 ½ | 7 | 1,150,000 | 3,450,000 | 4,426,000 | 5,403,000 | 6,379,000 |
| *340X-8 | M4 | 1 ½F x 1 ½F | 8 | 9 ¾ | 4 ½ | 8 | 1,150,000 | 3,450,000 | 4,426,000 | 5,403,000 | 6,379,000 |
| *342-3 | M4 | 2M x 1 ½F | 3 | 9 ¾ | 4 ½ | 7 | 1,150,000 | 3,450,000 | 4,426,000 | 5,403,000 | 6,379,000 |
| *342X-8 | M4 | 2M x 1 ½F | 8 | 9 ¾ | 4 ½ | 8 | 1,150,000 | 3,450,000 | 4,426,000 | 5,403,000 | 6,379,000 |
| *Standardly furnished with stainless steel thermostat tube. **ASME capacities are steam pressure ratings and do not reflect the CSA temperature relieving capacity of the valves for selection purposes. |
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