Lochinvar & A.O. Smith 100208451 Relief Valve
The Lochinvar & A.O. Smith 100208451 Relief Valve is a critical safety component engineered for precision pressure management in high-efficiency commercial boilers and water heaters. This 3/4 inch NPT relief valve is factory-set to a 150 PSI relief pressure (though frequently cross-referenced for 100# applications depending on system derating) and features a high-capacity discharge rate to prevent catastrophic vessel failure. Built with a heavy-duty bronze body and stainless steel spring, this ASME Section IV certified valve ensures a consistent pop-and-reseat action. As a direct OEM replacement part, it maintains the internal geometry required for Lochinvar Knight and A.O. Smith Cyclone series units. For technicians performing annual maintenance or emergency repairs, installing this HVAC pressure relief valve ensures the system operates within its engineered safety envelope while meeting local mechanical codes. Proper thermal expansion protection and siting are essential when integrating this component into closed-loop hydronic systems.
Key Benefits for the Field- System Integrity: Precision calibration provides reliable over-pressure protection for commercial heat exchangers.
- OEM Compatibility: Exact fitment for Lochinvar and A.O. Smith equipment prevents threading issues or mismatched flow rates.
- Industrial Durability: Corrosion-resistant internal components withstand high-temperature hydronic environments without scale-induced binding.
- Code Compliance: Meets ASME requirements for pressure vessel safety, ensuring the installation passes rigorous inspections.
What causes this relief valve to constantly drip?
Weeping is typically caused by thermal expansion exceeding the tank's capacity, a waterlogged expansion tank, or sediment preventing the valve from seating fully after a high-pressure event.
Can this valve be mounted horizontally?
No, pressure relief valves must be installed with the spindle in the vertical position to ensure proper mechanical operation and drainage of the discharge line.
Is the 100208451 interchangeable with standard off-the-shelf valves?
While the threads may match, this OEM part is specifically rated for the BTU discharge capacities of Lochinvar and A.O. Smith systems; using a non-compliant substitute can compromise system safety.
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: $198.42
-65%$198.42
$69.45Lochinvar & A.O. Smith 100208451 Relief Valve
The Lochinvar & A.O. Smith 100208451 Relief Valve is a critical safety component engineered for precision pressure management in high-efficiency commercial boilers and water heaters. This 3/4 inch NPT relief valve is factory-set to a 150 PSI relief pressure (though frequently cross-referenced for 100# applications depending on system derating) and features a high-capacity discharge rate to prevent catastrophic vessel failure. Built with a heavy-duty bronze body and stainless steel spring, this ASME Section IV certified valve ensures a consistent pop-and-reseat action. As a direct OEM replacement part, it maintains the internal geometry required for Lochinvar Knight and A.O. Smith Cyclone series units. For technicians performing annual maintenance or emergency repairs, installing this HVAC pressure relief valve ensures the system operates within its engineered safety envelope while meeting local mechanical codes. Proper thermal expansion protection and siting are essential when integrating this component into closed-loop hydronic systems.
Key Benefits for the Field- System Integrity: Precision calibration provides reliable over-pressure protection for commercial heat exchangers.
- OEM Compatibility: Exact fitment for Lochinvar and A.O. Smith equipment prevents threading issues or mismatched flow rates.
- Industrial Durability: Corrosion-resistant internal components withstand high-temperature hydronic environments without scale-induced binding.
- Code Compliance: Meets ASME requirements for pressure vessel safety, ensuring the installation passes rigorous inspections.
What causes this relief valve to constantly drip?
Weeping is typically caused by thermal expansion exceeding the tank's capacity, a waterlogged expansion tank, or sediment preventing the valve from seating fully after a high-pressure event.
Can this valve be mounted horizontally?
No, pressure relief valves must be installed with the spindle in the vertical position to ensure proper mechanical operation and drainage of the discharge line.
Is the 100208451 interchangeable with standard off-the-shelf valves?
While the threads may match, this OEM part is specifically rated for the BTU discharge capacities of Lochinvar and A.O. Smith systems; using a non-compliant substitute can compromise system safety.
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 Lochinvar & A.O. Smith 100208451 Relief Valve is a critical safety component engineered for precision pressure management in high-efficiency commercial boilers and water heaters. This 3/4 inch NPT relief valve is factory-set to a 150 PSI relief pressure (though frequently cross-referenced for 100# applications depending on system derating) and features a high-capacity discharge rate to prevent catastrophic vessel failure. Built with a heavy-duty bronze body and stainless steel spring, this ASME Section IV certified valve ensures a consistent pop-and-reseat action. As a direct OEM replacement part, it maintains the internal geometry required for Lochinvar Knight and A.O. Smith Cyclone series units. For technicians performing annual maintenance or emergency repairs, installing this HVAC pressure relief valve ensures the system operates within its engineered safety envelope while meeting local mechanical codes. Proper thermal expansion protection and siting are essential when integrating this component into closed-loop hydronic systems.
Key Benefits for the Field- System Integrity: Precision calibration provides reliable over-pressure protection for commercial heat exchangers.
- OEM Compatibility: Exact fitment for Lochinvar and A.O. Smith equipment prevents threading issues or mismatched flow rates.
- Industrial Durability: Corrosion-resistant internal components withstand high-temperature hydronic environments without scale-induced binding.
- Code Compliance: Meets ASME requirements for pressure vessel safety, ensuring the installation passes rigorous inspections.
What causes this relief valve to constantly drip?
Weeping is typically caused by thermal expansion exceeding the tank's capacity, a waterlogged expansion tank, or sediment preventing the valve from seating fully after a high-pressure event.
Can this valve be mounted horizontally?
No, pressure relief valves must be installed with the spindle in the vertical position to ensure proper mechanical operation and drainage of the discharge line.
Is the 100208451 interchangeable with standard off-the-shelf valves?
While the threads may match, this OEM part is specifically rated for the BTU discharge capacities of Lochinvar and A.O. Smith systems; using a non-compliant substitute can compromise system safety.
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.
