Watts 0121339 Valve
The Watts 0121339 (Model 10L-2-150) is a veteran-standard 3/4 inch T&P relief valve engineered for critical temperature and pressure protection in water heater and hot water storage tank applications. Built with a lead-free copper alloy body and a stainless steel spring, this ASME rated and CSA listed valve is designed to manage systems up to 80,000 BTU/hr. Its internal thermostatic element features a specialized thermo-bonded coating to prevent mineral accumulation and ensure consistent responsiveness to emergency conditions. With a 150 psi pressure relief setting and a 210°F temperature relief trip point, this self-closing valve provides the necessary failsafe for domestic and commercial hydronic setups. The short thermostat design and MNPT x FNPT connections allow for streamlined installation directly into the tank tapping, ensuring the probe remains immersed in the hottest water within the top six inches of the tank for maximum safety accuracy.
Key benefit list:- Dual-Protection Safety: Provides integrated temperature and pressure relief to prevent system failure in storage tanks and heaters.
- Corrosion Resistance: Lead-free copper alloy construction and stainless steel components withstand aggressive water conditions.
- Scalation Prevention: The thermo-bonded coating on the thermostat probe retards lime and mineral build-up, maintaining reliable trip points.
- High Capacity Rating: Certified for 80,000 BTU capacity with ASME Section IV and CSA domestic listings.
- Heavy-Duty Test Lever: Robust test lever included for manual verification of valve operation and discharge path clearance.
What is the difference between a Watts 10L-2 and 100XL?
The Watts 10L-2 features a short thermostat (approximately 2 inches) designed for direct tank tapping installation. The 100XL models typically feature an extended probe for installation in the hot water outlet line when a tank tapping is unavailable.
Does this valve handle thermal expansion issues?
While this 150 psi relief valve will discharge water to prevent over-pressurization from thermal expansion, it is a safety device and not a control valve. If frequent dripping occurs, we recommend installing a potable water expansion tank to preserve the valve's integrity.
Is the Watts 0121339 compliant with low-lead requirements?
Yes, as a Lead Free LF10L-2 model, it contains less than 0.25% lead by weight on wetted surfaces, meeting all current Safe Drinking Water Act standards for potable water applications.
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: $91.89
-65%$91.89
$32.16Watts 0121339 Valve
The Watts 0121339 (Model 10L-2-150) is a veteran-standard 3/4 inch T&P relief valve engineered for critical temperature and pressure protection in water heater and hot water storage tank applications. Built with a lead-free copper alloy body and a stainless steel spring, this ASME rated and CSA listed valve is designed to manage systems up to 80,000 BTU/hr. Its internal thermostatic element features a specialized thermo-bonded coating to prevent mineral accumulation and ensure consistent responsiveness to emergency conditions. With a 150 psi pressure relief setting and a 210°F temperature relief trip point, this self-closing valve provides the necessary failsafe for domestic and commercial hydronic setups. The short thermostat design and MNPT x FNPT connections allow for streamlined installation directly into the tank tapping, ensuring the probe remains immersed in the hottest water within the top six inches of the tank for maximum safety accuracy.
Key benefit list:- Dual-Protection Safety: Provides integrated temperature and pressure relief to prevent system failure in storage tanks and heaters.
- Corrosion Resistance: Lead-free copper alloy construction and stainless steel components withstand aggressive water conditions.
- Scalation Prevention: The thermo-bonded coating on the thermostat probe retards lime and mineral build-up, maintaining reliable trip points.
- High Capacity Rating: Certified for 80,000 BTU capacity with ASME Section IV and CSA domestic listings.
- Heavy-Duty Test Lever: Robust test lever included for manual verification of valve operation and discharge path clearance.
What is the difference between a Watts 10L-2 and 100XL?
The Watts 10L-2 features a short thermostat (approximately 2 inches) designed for direct tank tapping installation. The 100XL models typically feature an extended probe for installation in the hot water outlet line when a tank tapping is unavailable.
Does this valve handle thermal expansion issues?
While this 150 psi relief valve will discharge water to prevent over-pressurization from thermal expansion, it is a safety device and not a control valve. If frequent dripping occurs, we recommend installing a potable water expansion tank to preserve the valve's integrity.
Is the Watts 0121339 compliant with low-lead requirements?
Yes, as a Lead Free LF10L-2 model, it contains less than 0.25% lead by weight on wetted surfaces, meeting all current Safe Drinking Water Act standards for potable water applications.
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 0121339 (Model 10L-2-150) is a veteran-standard 3/4 inch T&P relief valve engineered for critical temperature and pressure protection in water heater and hot water storage tank applications. Built with a lead-free copper alloy body and a stainless steel spring, this ASME rated and CSA listed valve is designed to manage systems up to 80,000 BTU/hr. Its internal thermostatic element features a specialized thermo-bonded coating to prevent mineral accumulation and ensure consistent responsiveness to emergency conditions. With a 150 psi pressure relief setting and a 210°F temperature relief trip point, this self-closing valve provides the necessary failsafe for domestic and commercial hydronic setups. The short thermostat design and MNPT x FNPT connections allow for streamlined installation directly into the tank tapping, ensuring the probe remains immersed in the hottest water within the top six inches of the tank for maximum safety accuracy.
Key benefit list:- Dual-Protection Safety: Provides integrated temperature and pressure relief to prevent system failure in storage tanks and heaters.
- Corrosion Resistance: Lead-free copper alloy construction and stainless steel components withstand aggressive water conditions.
- Scalation Prevention: The thermo-bonded coating on the thermostat probe retards lime and mineral build-up, maintaining reliable trip points.
- High Capacity Rating: Certified for 80,000 BTU capacity with ASME Section IV and CSA domestic listings.
- Heavy-Duty Test Lever: Robust test lever included for manual verification of valve operation and discharge path clearance.
What is the difference between a Watts 10L-2 and 100XL?
The Watts 10L-2 features a short thermostat (approximately 2 inches) designed for direct tank tapping installation. The 100XL models typically feature an extended probe for installation in the hot water outlet line when a tank tapping is unavailable.
Does this valve handle thermal expansion issues?
While this 150 psi relief valve will discharge water to prevent over-pressurization from thermal expansion, it is a safety device and not a control valve. If frequent dripping occurs, we recommend installing a potable water expansion tank to preserve the valve's integrity.
Is the Watts 0121339 compliant with low-lead requirements?
Yes, as a Lead Free LF10L-2 model, it contains less than 0.25% lead by weight on wetted surfaces, meeting all current Safe Drinking Water Act standards for potable water applications.
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.
