Watts 0121459 Valve
The Watts 0121459 (Model 140X-8) is a heavy-duty automatic reseating temperature and pressure relief valve designed for high-capacity commercial water heating systems. Engineered with a 3/4-inch NPT female inlet and outlet, this valve provides critical over-temperature and over-pressure protection, featuring a massive 1,437,600 BTU/hr CSA temperature steam discharge capacity. The 140X-8 model is equipped with an 8-inch extension thermostat specifically designed for installation in the hot water outlet, ensuring the sensing element is positioned within the top six inches of the tank where water is hottest. Constructed with a lead-free bronze body and a nylon-coated copper thermostat, it ensures long-term reliability against mineral buildup. This ASME rated T&P valve is essential for contractors maintaining large-scale boilers or storage tanks, offering a fixed pressure relief setting of 150 PSI and a temperature relief point of 210°F. Its non-mechanical seat-to-disc alignment and tamper-resistant bonnet screws provide the professional-grade security required in demanding mechanical rooms.
Key Benefits for Technicians:- High BTU Capacity: Rated for systems up to 1,437,600 BTU/hr, making it suitable for large-volume commercial water heaters.
- Extended 8-Inch Thermostat: Thermo-bonded coating resists corrosion and provides precise sensing when installed in outlet piping.
- Automatic Reseating: Eliminates the need for manual resets after a relief event, minimizing system downtime.
- Durable Bronze Construction: Built with a lead-free copper silicon alloy body to meet safety standards and resist harsh water conditions.
- Test Lever Included: Allows for easy periodic testing of the internal seat and spring mechanism during routine maintenance.
Where should the 140X-8 thermostat be positioned for accurate sensing?
The extension thermostat must be immersed in the water within the top 6 inches of the tank. For the 140X series, this is typically achieved by installing the valve in the hot water outlet line at the top of the heater.
Is this valve suitable for potable water applications?
Yes, the 0121459 is a lead-free model (LF140X series) and complies with lead-free requirements for systems providing water for human consumption.
What causes this valve to drip intermittently?
Intermittent dripping is often caused by thermal expansion in a closed system. If dripping persists, verify the system pressure is below 150 PSI and consider installing a thermal expansion tank.
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: $719.19
-65%$719.19
$251.72Watts 0121459 Valve
The Watts 0121459 (Model 140X-8) is a heavy-duty automatic reseating temperature and pressure relief valve designed for high-capacity commercial water heating systems. Engineered with a 3/4-inch NPT female inlet and outlet, this valve provides critical over-temperature and over-pressure protection, featuring a massive 1,437,600 BTU/hr CSA temperature steam discharge capacity. The 140X-8 model is equipped with an 8-inch extension thermostat specifically designed for installation in the hot water outlet, ensuring the sensing element is positioned within the top six inches of the tank where water is hottest. Constructed with a lead-free bronze body and a nylon-coated copper thermostat, it ensures long-term reliability against mineral buildup. This ASME rated T&P valve is essential for contractors maintaining large-scale boilers or storage tanks, offering a fixed pressure relief setting of 150 PSI and a temperature relief point of 210°F. Its non-mechanical seat-to-disc alignment and tamper-resistant bonnet screws provide the professional-grade security required in demanding mechanical rooms.
Key Benefits for Technicians:- High BTU Capacity: Rated for systems up to 1,437,600 BTU/hr, making it suitable for large-volume commercial water heaters.
- Extended 8-Inch Thermostat: Thermo-bonded coating resists corrosion and provides precise sensing when installed in outlet piping.
- Automatic Reseating: Eliminates the need for manual resets after a relief event, minimizing system downtime.
- Durable Bronze Construction: Built with a lead-free copper silicon alloy body to meet safety standards and resist harsh water conditions.
- Test Lever Included: Allows for easy periodic testing of the internal seat and spring mechanism during routine maintenance.
Where should the 140X-8 thermostat be positioned for accurate sensing?
The extension thermostat must be immersed in the water within the top 6 inches of the tank. For the 140X series, this is typically achieved by installing the valve in the hot water outlet line at the top of the heater.
Is this valve suitable for potable water applications?
Yes, the 0121459 is a lead-free model (LF140X series) and complies with lead-free requirements for systems providing water for human consumption.
What causes this valve to drip intermittently?
Intermittent dripping is often caused by thermal expansion in a closed system. If dripping persists, verify the system pressure is below 150 PSI and consider installing a thermal expansion tank.
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 0121459 (Model 140X-8) is a heavy-duty automatic reseating temperature and pressure relief valve designed for high-capacity commercial water heating systems. Engineered with a 3/4-inch NPT female inlet and outlet, this valve provides critical over-temperature and over-pressure protection, featuring a massive 1,437,600 BTU/hr CSA temperature steam discharge capacity. The 140X-8 model is equipped with an 8-inch extension thermostat specifically designed for installation in the hot water outlet, ensuring the sensing element is positioned within the top six inches of the tank where water is hottest. Constructed with a lead-free bronze body and a nylon-coated copper thermostat, it ensures long-term reliability against mineral buildup. This ASME rated T&P valve is essential for contractors maintaining large-scale boilers or storage tanks, offering a fixed pressure relief setting of 150 PSI and a temperature relief point of 210°F. Its non-mechanical seat-to-disc alignment and tamper-resistant bonnet screws provide the professional-grade security required in demanding mechanical rooms.
Key Benefits for Technicians:- High BTU Capacity: Rated for systems up to 1,437,600 BTU/hr, making it suitable for large-volume commercial water heaters.
- Extended 8-Inch Thermostat: Thermo-bonded coating resists corrosion and provides precise sensing when installed in outlet piping.
- Automatic Reseating: Eliminates the need for manual resets after a relief event, minimizing system downtime.
- Durable Bronze Construction: Built with a lead-free copper silicon alloy body to meet safety standards and resist harsh water conditions.
- Test Lever Included: Allows for easy periodic testing of the internal seat and spring mechanism during routine maintenance.
Where should the 140X-8 thermostat be positioned for accurate sensing?
The extension thermostat must be immersed in the water within the top 6 inches of the tank. For the 140X series, this is typically achieved by installing the valve in the hot water outlet line at the top of the heater.
Is this valve suitable for potable water applications?
Yes, the 0121459 is a lead-free model (LF140X series) and complies with lead-free requirements for systems providing water for human consumption.
What causes this valve to drip intermittently?
Intermittent dripping is often caused by thermal expansion in a closed system. If dripping persists, verify the system pressure is below 150 PSI and consider installing a thermal expansion tank.
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.
