Watts 0163746 Valve
The Watts 0163746 (Model 1 LL40XL-Z2) is a high-capacity temperature and pressure relief valve designed specifically for commercial hot water supply tanks and large boilers. Featuring a 1-inch NPT male inlet and 1-inch NPT female outlet, this bronze-body valve is engineered for 500,000 BTU/hr systems where safety and high discharge capacity are mandatory. The non-mechanical seat-to-disc alignment ensures reliable operation at a pressure relief setting of 150 PSI and a temperature threshold of 210°F. For technicians working with heavily insulated tanks, the extended shank design simplifies direct installation into tank tappings or hot water outlets. This unit includes an automatic reseating feature and a thermo-bonded coated thermostat to prevent mineral buildup and ensure consistent accuracy during thermal expansion events. It is a critical component for maintaining code compliance in commercial potable water heating applications.
Key Benefits for Contractors- High BTU Rating: Capable of handling up to 500,000 BTU/hr, making it ideal for heavy-duty commercial water heaters and storage tanks.
- Durable Bronze Construction: Built with a rugged bronze body and stainless steel internal parts to resist corrosion in harsh water conditions.
- Extended Shank Design: Facilitates easy 1" NPT installation on tanks with thick insulation without the need for additional nipple extensions.
- Reliable Thermal Protection: The 210°F temperature relief and special thermo-bonded coating on the thermostat provide precise protection against overheating.
- Code Compliance: Meets ASME Section IV and CSA ANSI Z21.22 standards for automatic reseating T&P valves.
Is the Watts 0163746 compatible with lead-free requirements?
This specific model is the standard bronze version. For applications requiring compliance with the Safe Drinking Water Act (SDWA), please verify if your local jurisdiction requires the Lead-Free (LF) model variant.
What is the purpose of the test lever on this T&P valve?
The test lever allows technicians to manually verify the discharge path and seat functionality during routine maintenance. Always ensure a proper drain line is connected before operating the lever to avoid scalding.
Can this valve be installed horizontally?
Yes, the Watts LL40XL series can be installed vertically or horizontally, provided the temperature-sensing element is immersed in the water within the top six inches of the tank where the water is hottest.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $782.12
-65%$782.12
$273.74Watts 0163746 Valve
The Watts 0163746 (Model 1 LL40XL-Z2) is a high-capacity temperature and pressure relief valve designed specifically for commercial hot water supply tanks and large boilers. Featuring a 1-inch NPT male inlet and 1-inch NPT female outlet, this bronze-body valve is engineered for 500,000 BTU/hr systems where safety and high discharge capacity are mandatory. The non-mechanical seat-to-disc alignment ensures reliable operation at a pressure relief setting of 150 PSI and a temperature threshold of 210°F. For technicians working with heavily insulated tanks, the extended shank design simplifies direct installation into tank tappings or hot water outlets. This unit includes an automatic reseating feature and a thermo-bonded coated thermostat to prevent mineral buildup and ensure consistent accuracy during thermal expansion events. It is a critical component for maintaining code compliance in commercial potable water heating applications.
Key Benefits for Contractors- High BTU Rating: Capable of handling up to 500,000 BTU/hr, making it ideal for heavy-duty commercial water heaters and storage tanks.
- Durable Bronze Construction: Built with a rugged bronze body and stainless steel internal parts to resist corrosion in harsh water conditions.
- Extended Shank Design: Facilitates easy 1" NPT installation on tanks with thick insulation without the need for additional nipple extensions.
- Reliable Thermal Protection: The 210°F temperature relief and special thermo-bonded coating on the thermostat provide precise protection against overheating.
- Code Compliance: Meets ASME Section IV and CSA ANSI Z21.22 standards for automatic reseating T&P valves.
Is the Watts 0163746 compatible with lead-free requirements?
This specific model is the standard bronze version. For applications requiring compliance with the Safe Drinking Water Act (SDWA), please verify if your local jurisdiction requires the Lead-Free (LF) model variant.
What is the purpose of the test lever on this T&P valve?
The test lever allows technicians to manually verify the discharge path and seat functionality during routine maintenance. Always ensure a proper drain line is connected before operating the lever to avoid scalding.
Can this valve be installed horizontally?
Yes, the Watts LL40XL series can be installed vertically or horizontally, provided the temperature-sensing element is immersed in the water within the top six inches of the tank where the water is hottest.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
The Watts 0163746 (Model 1 LL40XL-Z2) is a high-capacity temperature and pressure relief valve designed specifically for commercial hot water supply tanks and large boilers. Featuring a 1-inch NPT male inlet and 1-inch NPT female outlet, this bronze-body valve is engineered for 500,000 BTU/hr systems where safety and high discharge capacity are mandatory. The non-mechanical seat-to-disc alignment ensures reliable operation at a pressure relief setting of 150 PSI and a temperature threshold of 210°F. For technicians working with heavily insulated tanks, the extended shank design simplifies direct installation into tank tappings or hot water outlets. This unit includes an automatic reseating feature and a thermo-bonded coated thermostat to prevent mineral buildup and ensure consistent accuracy during thermal expansion events. It is a critical component for maintaining code compliance in commercial potable water heating applications.
Key Benefits for Contractors- High BTU Rating: Capable of handling up to 500,000 BTU/hr, making it ideal for heavy-duty commercial water heaters and storage tanks.
- Durable Bronze Construction: Built with a rugged bronze body and stainless steel internal parts to resist corrosion in harsh water conditions.
- Extended Shank Design: Facilitates easy 1" NPT installation on tanks with thick insulation without the need for additional nipple extensions.
- Reliable Thermal Protection: The 210°F temperature relief and special thermo-bonded coating on the thermostat provide precise protection against overheating.
- Code Compliance: Meets ASME Section IV and CSA ANSI Z21.22 standards for automatic reseating T&P valves.
Is the Watts 0163746 compatible with lead-free requirements?
This specific model is the standard bronze version. For applications requiring compliance with the Safe Drinking Water Act (SDWA), please verify if your local jurisdiction requires the Lead-Free (LF) model variant.
What is the purpose of the test lever on this T&P valve?
The test lever allows technicians to manually verify the discharge path and seat functionality during routine maintenance. Always ensure a proper drain line is connected before operating the lever to avoid scalding.
Can this valve be installed horizontally?
Yes, the Watts LL40XL series can be installed vertically or horizontally, provided the temperature-sensing element is immersed in the water within the top six inches of the tank where the water is hottest.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
