Series 1L/1XL/10L/100XL Self-closing T & P Safety Relief Valves ½" and ¾" N.P.T.

Series 1L/1XL/10L/100XL

A.S.M.E rated. Self-closing T&P Relief Valves for Water Heaters up to 100,000 BTU/Hr. The combined 2 in 1 T&P relief valve provides the least expensive and proven means for protection against both excessive temperature and pressure emergency conditions. Provides fully automatic temperature and pressure relief protection for hot water storage tanks and heaters up to 100,000 BTU/HR. No.10L furnished with test lever and short thermostat for installation directly in tank tapping. No. 100XL furnished with test lever and extension thermostat for installation 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, 150 psi (5.27, 7.03, 8.79, 10.55 bar). FEATURES Series 1L, 10L and 100XL - Size ¾" (20mm) (A.S.M.E. Rated) Feature a unique thermostat with special thermo-bonded coating. All bronze body. Stainless steel spring. Thermostat is accurate and proven. Exclusively designed and manufactured by Watts. SPECIFICATIONS T&P valves Each hot water storage heater shall be equipped with an A.G.A. and A.S.M.E. rated automatic temperature 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 Regulator Company No. 1L, 1XL, 10L or 100XL.

WARNING Following installation, The valve lever MUST be operated AT LEAST ONCE A YEAR by the hot water tank owner to insure 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. OPTIONS For tanks and heaters with extra thick insulation, use Watts L100XL or LL100XL. For new generation water heaters containing extra thick insulation, use Watts SL100XL or LLL100XL. No. 100XL-8 with 8" (200mm) extension thermostat. SOLAR - No. 100XL or 1XL; specify Model Z9 for stainless steel lever and pin for outside solar applications. Model Z11 for 180°F (82°C) thermostat. No. 1L, 1XL Size ½" (15mm): For both temperature and pressure relief protection. No. 1L has short thermostat and test lever. No. 1XLhas extension thermostat with thermo-bonded coating. Also available with 8"(200mm) extension thermostat.

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.

For Heaters with Direct Top Tapping Use standard or extra length extension thermostat

"Alternate" Only when the tappings are not provided Use standard or extra length extension thermostat

DIMENSIONS - WEIGHT

Model	Order No.	Size(DN)		Dimensions								Weight		AGA/CGA Temp. Steam Rating BTU/hr.
				A		B		D		T
		in.	mm	in.	mm	in.	mm	in.	mm	in.	mm	oz.	gm
1L2 M7	2268	½	15	1 ¾	43	3 ½	89	7/8	22	2	50	10	284	15,000
1XL-3 M7	4494	½	15	1 ¾	43	3 ½	89	7/8	22	3	76	12	340	15,000
1XL-8 M7	4497	½	15	1 ¾	43	3 ½	89	7/8	22	8	203	16	454	15,000
10L-2 M7	63069	¾	20	1 ¾	43	3 ½	89	1 1/8	29	2	50	10	284	80,000
100XL-3 M7	66100	¾	20	1 ¾	43	3 ½	89	1 1/8	29	3	76	12	340	100,000
100XL-8 M7	66110	¾	20	1 ¾	43	3 ½	89	1 1/8	29	8	203	14	397	100,000
L100XL-3 M5	66133	¾	20	1 ¾	43	4 ¼	108	1 5/8	41	3	76	12	340	100,000

WARNING

REINSPECTION OF T&P RELIEF VALVE: Temperature and Pressure Relief Valves should be reinspected AT LEAST ONCE EVERY THREE YEARS by a licensed plumbing contractor or authorized inspection agency, to insure that the product has not been affected by corrosive water conditions and to insure 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 are not detectable unless the valve and its components are physically removed and inspected. Do not attempt to conduct this inspection on your own. Contact your plumbing contractor for a reinspection to assure continuing safety. FAILURE TO REINSPECT THIS VALVE AS DIRECTED COULD RESULT IN UNSAFE TEMPERATURE OR PRESSURE BUILD-UP WHICH CAN RESULT IN SERIOUS INJURY OR DEATH AND/OR SEVERE PROPERTY DAMAGE.

IMPORTANT

A relief valve functions in an emergency by discharging water. Therefore, it is essential that a discharge line be piped from the valve in order to carry the overflow to a safe place of disposal. The drain piped must be the same size as the valve outlet and must pitch downward from the valve and terminate at least 6"(152mm) above the floor drain where any discharge will be clearly visible.