Watts 0121522 Valve
The Watts 0121522 is a high-capacity LF174A Pressure Relief Valve engineered for heavy-duty hot water heating boiler applications. Featuring a 1.25-inch female NPT inlet and outlet, this ASME Section IV safety valve is factory-set at 100 PSI to protect hydronic systems from catastrophic over-pressurization. The Lead Free cast copper silicon alloy body ensures compliance with stringent potable water requirements while providing superior corrosion resistance. With a massive steam discharge capacity of 4,399,000 BTU/hr, the 0121522 handles thermal expansion and runaway firing conditions common in large-scale commercial boilers. The internal architecture includes an above-drain seat to prevent sediment fouling and a high-temperature water seal that isolates the stainless steel spring from the media. This non-mechanical seat-to-disc alignment prevents sticking or freezing, ensuring the boiler safety valve remains operational in demanding HVACR environments. This industrial-grade relief valve is designed for emergency pressure relief and must be piped to a safe discharge point per local plumbing codes.
Key Benefits
- High BTU Rating: Provides a massive 4,399K BTU/hr discharge capacity, suitable for high-output commercial boiler systems.
- Silt-Resistant Design: The raised seat prevents sediment accumulation, ensuring a positive seal and reliable emergency opening.
- Lead-Free Reliability: Constructed with Lead Free copper silicon alloy to meet all current HVACR and plumbing standards for safety and longevity.
- Spring Isolation: A high-temperature resistant water seal protects internal spring components from scale and system water during relief cycles.
- Automatic Reseating: Precision-engineered for consistent closure once system pressure returns to safe operating levels.
Common Questions
Can the Watt 0121522 be used as an operating control?
No. This is a safety relief valve designed specifically for emergency pressure protection. It should never be used to regulate system pressure during normal operation.
What size discharge piping is required for the 1.25-inch LF174A?
The discharge line must match the 1.25-inch outlet diameter and be pitched downward for proper drainage to a safe disposal point.
Does this valve protect against both temperature and pressure?
The Series LF174A is a pressure-only safety relief valve. For systems requiring temperature protection, a dedicated T&P (temperature and pressure) relief valve must be used.
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.
Watts 0121522 Valve
The Watts 0121522 is a high-capacity LF174A Pressure Relief Valve engineered for heavy-duty hot water heating boiler applications. Featuring a 1.25-inch female NPT inlet and outlet, this ASME Section IV safety valve is factory-set at 100 PSI to protect hydronic systems from catastrophic over-pressurization. The Lead Free cast copper silicon alloy body ensures compliance with stringent potable water requirements while providing superior corrosion resistance. With a massive steam discharge capacity of 4,399,000 BTU/hr, the 0121522 handles thermal expansion and runaway firing conditions common in large-scale commercial boilers. The internal architecture includes an above-drain seat to prevent sediment fouling and a high-temperature water seal that isolates the stainless steel spring from the media. This non-mechanical seat-to-disc alignment prevents sticking or freezing, ensuring the boiler safety valve remains operational in demanding HVACR environments. This industrial-grade relief valve is designed for emergency pressure relief and must be piped to a safe discharge point per local plumbing codes.
Key Benefits
- High BTU Rating: Provides a massive 4,399K BTU/hr discharge capacity, suitable for high-output commercial boiler systems.
- Silt-Resistant Design: The raised seat prevents sediment accumulation, ensuring a positive seal and reliable emergency opening.
- Lead-Free Reliability: Constructed with Lead Free copper silicon alloy to meet all current HVACR and plumbing standards for safety and longevity.
- Spring Isolation: A high-temperature resistant water seal protects internal spring components from scale and system water during relief cycles.
- Automatic Reseating: Precision-engineered for consistent closure once system pressure returns to safe operating levels.
Common Questions
Can the Watt 0121522 be used as an operating control?
No. This is a safety relief valve designed specifically for emergency pressure protection. It should never be used to regulate system pressure during normal operation.
What size discharge piping is required for the 1.25-inch LF174A?
The discharge line must match the 1.25-inch outlet diameter and be pitched downward for proper drainage to a safe disposal point.
Does this valve protect against both temperature and pressure?
The Series LF174A is a pressure-only safety relief valve. For systems requiring temperature protection, a dedicated T&P (temperature and pressure) relief valve must be used.
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.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Watts 0121522 is a high-capacity LF174A Pressure Relief Valve engineered for heavy-duty hot water heating boiler applications. Featuring a 1.25-inch female NPT inlet and outlet, this ASME Section IV safety valve is factory-set at 100 PSI to protect hydronic systems from catastrophic over-pressurization. The Lead Free cast copper silicon alloy body ensures compliance with stringent potable water requirements while providing superior corrosion resistance. With a massive steam discharge capacity of 4,399,000 BTU/hr, the 0121522 handles thermal expansion and runaway firing conditions common in large-scale commercial boilers. The internal architecture includes an above-drain seat to prevent sediment fouling and a high-temperature water seal that isolates the stainless steel spring from the media. This non-mechanical seat-to-disc alignment prevents sticking or freezing, ensuring the boiler safety valve remains operational in demanding HVACR environments. This industrial-grade relief valve is designed for emergency pressure relief and must be piped to a safe discharge point per local plumbing codes.
Key Benefits
- High BTU Rating: Provides a massive 4,399K BTU/hr discharge capacity, suitable for high-output commercial boiler systems.
- Silt-Resistant Design: The raised seat prevents sediment accumulation, ensuring a positive seal and reliable emergency opening.
- Lead-Free Reliability: Constructed with Lead Free copper silicon alloy to meet all current HVACR and plumbing standards for safety and longevity.
- Spring Isolation: A high-temperature resistant water seal protects internal spring components from scale and system water during relief cycles.
- Automatic Reseating: Precision-engineered for consistent closure once system pressure returns to safe operating levels.
Common Questions
Can the Watt 0121522 be used as an operating control?
No. This is a safety relief valve designed specifically for emergency pressure protection. It should never be used to regulate system pressure during normal operation.
What size discharge piping is required for the 1.25-inch LF174A?
The discharge line must match the 1.25-inch outlet diameter and be pitched downward for proper drainage to a safe disposal point.
Does this valve protect against both temperature and pressure?
The Series LF174A is a pressure-only safety relief valve. For systems requiring temperature protection, a dedicated T&P (temperature and pressure) relief valve must be used.
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.
