Watts 0121558 Valve
The Watts 0121558 (Series LF174A) is a high-capacity 2-inch boiler pressure relief valve designed specifically for large-scale commercial hot water heating and domestic supply systems. Engineered with a lead-free copper silicon alloy body, this valve is rated for a 75 PSI set point and provides an exceptional discharge capacity of 7,770,000 BTU/hr. Its construction features NPT female threaded connections for both the inlet and outlet, ensuring a secure and standardized fit for heavy-duty piping. As a veteran technician knows, the ASME Section IV rating is critical for code compliance in high-output applications, and this valve delivers the necessary overpressure protection for large boiler footprints.
Operational reliability is enhanced by an above-drain seat design, which prevents sediment from fouling the valve and ensures the non-mechanical seat-to-disc alignment will not stick or freeze during emergency discharge. To protect the internal components, a high-temperature resistant water seal isolates the stainless steel spring from the media. For modern facility management, the Watts LF174A-075 includes SentryPlus Alert flood sensor connectivity, allowing contractors to integrate discharge monitoring into a Building Automation System (BAS) via a compatible connection kit. This proactive monitoring helps detect discharge events early, preventing potential mechanical room flooding and expensive equipment damage.
Key Benefits for Contractors
- High BTU Capacity: Rated at 7,770,000 BTU/hr to support large commercial boiler systems.
- Lead-Free Construction: Complies with low-lead regulations for safe use in domestic hot water supply.
- Sediment Protection: The raised seat design prevents debris buildup that often causes valve leakage or failure.
- BMS Integration: Integrated flood sensor ready for remote monitoring through the SentryPlus Alert system.
- Fail-Safe Seating: Utilizes a non-metallic disc-to-metal seating for a positive seal and automatic reseating.
Common Technical Questions
What is the maximum operating temperature for this relief valve?
The valve is rated for a maximum temperature of 250°F (121°C), making it suitable for both standard heating and high-temperature supply applications.
Can this valve be used as an operating control?
No. The LF174A is strictly for emergency safety relief and must not be used as a primary pressure or temperature operating control.
Is the flood sensor active right out of the box?
The sensor is included, but requires a separate activation kit (BMS or Cellular) to communicate with your monitoring system.
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: $3,141.02
-65%$3,141.02
$1,099.36Watts 0121558 Valve
The Watts 0121558 (Series LF174A) is a high-capacity 2-inch boiler pressure relief valve designed specifically for large-scale commercial hot water heating and domestic supply systems. Engineered with a lead-free copper silicon alloy body, this valve is rated for a 75 PSI set point and provides an exceptional discharge capacity of 7,770,000 BTU/hr. Its construction features NPT female threaded connections for both the inlet and outlet, ensuring a secure and standardized fit for heavy-duty piping. As a veteran technician knows, the ASME Section IV rating is critical for code compliance in high-output applications, and this valve delivers the necessary overpressure protection for large boiler footprints.
Operational reliability is enhanced by an above-drain seat design, which prevents sediment from fouling the valve and ensures the non-mechanical seat-to-disc alignment will not stick or freeze during emergency discharge. To protect the internal components, a high-temperature resistant water seal isolates the stainless steel spring from the media. For modern facility management, the Watts LF174A-075 includes SentryPlus Alert flood sensor connectivity, allowing contractors to integrate discharge monitoring into a Building Automation System (BAS) via a compatible connection kit. This proactive monitoring helps detect discharge events early, preventing potential mechanical room flooding and expensive equipment damage.
Key Benefits for Contractors
- High BTU Capacity: Rated at 7,770,000 BTU/hr to support large commercial boiler systems.
- Lead-Free Construction: Complies with low-lead regulations for safe use in domestic hot water supply.
- Sediment Protection: The raised seat design prevents debris buildup that often causes valve leakage or failure.
- BMS Integration: Integrated flood sensor ready for remote monitoring through the SentryPlus Alert system.
- Fail-Safe Seating: Utilizes a non-metallic disc-to-metal seating for a positive seal and automatic reseating.
Common Technical Questions
What is the maximum operating temperature for this relief valve?
The valve is rated for a maximum temperature of 250°F (121°C), making it suitable for both standard heating and high-temperature supply applications.
Can this valve be used as an operating control?
No. The LF174A is strictly for emergency safety relief and must not be used as a primary pressure or temperature operating control.
Is the flood sensor active right out of the box?
The sensor is included, but requires a separate activation kit (BMS or Cellular) to communicate with your monitoring system.
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 0121558 (Series LF174A) is a high-capacity 2-inch boiler pressure relief valve designed specifically for large-scale commercial hot water heating and domestic supply systems. Engineered with a lead-free copper silicon alloy body, this valve is rated for a 75 PSI set point and provides an exceptional discharge capacity of 7,770,000 BTU/hr. Its construction features NPT female threaded connections for both the inlet and outlet, ensuring a secure and standardized fit for heavy-duty piping. As a veteran technician knows, the ASME Section IV rating is critical for code compliance in high-output applications, and this valve delivers the necessary overpressure protection for large boiler footprints.
Operational reliability is enhanced by an above-drain seat design, which prevents sediment from fouling the valve and ensures the non-mechanical seat-to-disc alignment will not stick or freeze during emergency discharge. To protect the internal components, a high-temperature resistant water seal isolates the stainless steel spring from the media. For modern facility management, the Watts LF174A-075 includes SentryPlus Alert flood sensor connectivity, allowing contractors to integrate discharge monitoring into a Building Automation System (BAS) via a compatible connection kit. This proactive monitoring helps detect discharge events early, preventing potential mechanical room flooding and expensive equipment damage.
Key Benefits for Contractors
- High BTU Capacity: Rated at 7,770,000 BTU/hr to support large commercial boiler systems.
- Lead-Free Construction: Complies with low-lead regulations for safe use in domestic hot water supply.
- Sediment Protection: The raised seat design prevents debris buildup that often causes valve leakage or failure.
- BMS Integration: Integrated flood sensor ready for remote monitoring through the SentryPlus Alert system.
- Fail-Safe Seating: Utilizes a non-metallic disc-to-metal seating for a positive seal and automatic reseating.
Common Technical Questions
What is the maximum operating temperature for this relief valve?
The valve is rated for a maximum temperature of 250°F (121°C), making it suitable for both standard heating and high-temperature supply applications.
Can this valve be used as an operating control?
No. The LF174A is strictly for emergency safety relief and must not be used as a primary pressure or temperature operating control.
Is the flood sensor active right out of the box?
The sensor is included, but requires a separate activation kit (BMS or Cellular) to communicate with your monitoring system.
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.
