
Lochinvar & A.O. Smith 100111601 Valve
The Lochinvar & A.O. Smith 100111601 is a high-capacity water pressure relief valve engineered for critical over-pressure protection in commercial and industrial hydronic systems. Featuring a 3/4" NPT connection and a fixed 125 PSI pressure rating, this valve is designed to handle discharge capacities up to 2,289,000 BTU/HR, making it a standard specification for high-output boilers and water heaters. As a genuine OEM replacement part, it ensures factory-standard fitment and reliable performance, preventing dangerous pressure spikes that can lead to vessel fatigue or catastrophic failure. The 100111601 is ASME rated and built to meet the rigorous safety demands of modern HVACR applications. Contractors choose this water relief valve for its robust construction and precise calibration, ensuring that potable water systems and hot water boilers remain within safe operating parameters even under high-load conditions.
Key Benefits:- High-Capacity Discharge: Rated for up to 2,289,000 BTU to provide safety for large-scale commercial heating equipment.
- Precise Pressure Control: Pre-set at 125 PSI to ensure automatic relief when system limits are reached.
- OEM Compatibility: Exact replacement for Lochinvar and A.O. Smith part number 100111601, ensuring seamless integration.
- NPT Connections: Features a standard 3/4" inlet for straightforward installation into existing pipe headers or tank tappings.
- ASME Certified: Manufactured and tested in compliance with ASME Boiler and Pressure Vessel Code requirements.
What causes a relief valve to "simmer" or leak?
Simmering typically occurs when the system operating pressure is too close to the 125 PSI set point. It is recommended to maintain an operating pressure at or below 90% of the valve's rating to prevent seat leakage and premature wear.
Is the 100111601 a universal valve?
While it fits standard 3/4" NPT ports, it is a specific OEM repair part with a high BTU rating. Always verify that your equipment's nameplate requirements match the 2,289,000 BTU and 125 PSI specifications before installation.
Can this valve be used for temperature relief?
This specific model functions primarily as a pressure relief valve (PRV). For applications requiring thermal expansion protection, ensure the system also includes a properly sized expansion tank or a dedicated T&P valve if specified by local codes.
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: $180.96
-65%$180.96
$63.34Lochinvar & A.O. Smith 100111601 Valve
The Lochinvar & A.O. Smith 100111601 is a high-capacity water pressure relief valve engineered for critical over-pressure protection in commercial and industrial hydronic systems. Featuring a 3/4" NPT connection and a fixed 125 PSI pressure rating, this valve is designed to handle discharge capacities up to 2,289,000 BTU/HR, making it a standard specification for high-output boilers and water heaters. As a genuine OEM replacement part, it ensures factory-standard fitment and reliable performance, preventing dangerous pressure spikes that can lead to vessel fatigue or catastrophic failure. The 100111601 is ASME rated and built to meet the rigorous safety demands of modern HVACR applications. Contractors choose this water relief valve for its robust construction and precise calibration, ensuring that potable water systems and hot water boilers remain within safe operating parameters even under high-load conditions.
Key Benefits:- High-Capacity Discharge: Rated for up to 2,289,000 BTU to provide safety for large-scale commercial heating equipment.
- Precise Pressure Control: Pre-set at 125 PSI to ensure automatic relief when system limits are reached.
- OEM Compatibility: Exact replacement for Lochinvar and A.O. Smith part number 100111601, ensuring seamless integration.
- NPT Connections: Features a standard 3/4" inlet for straightforward installation into existing pipe headers or tank tappings.
- ASME Certified: Manufactured and tested in compliance with ASME Boiler and Pressure Vessel Code requirements.
What causes a relief valve to "simmer" or leak?
Simmering typically occurs when the system operating pressure is too close to the 125 PSI set point. It is recommended to maintain an operating pressure at or below 90% of the valve's rating to prevent seat leakage and premature wear.
Is the 100111601 a universal valve?
While it fits standard 3/4" NPT ports, it is a specific OEM repair part with a high BTU rating. Always verify that your equipment's nameplate requirements match the 2,289,000 BTU and 125 PSI specifications before installation.
Can this valve be used for temperature relief?
This specific model functions primarily as a pressure relief valve (PRV). For applications requiring thermal expansion protection, ensure the system also includes a properly sized expansion tank or a dedicated T&P valve if specified by local codes.
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 100111601 is a high-capacity water pressure relief valve engineered for critical over-pressure protection in commercial and industrial hydronic systems. Featuring a 3/4" NPT connection and a fixed 125 PSI pressure rating, this valve is designed to handle discharge capacities up to 2,289,000 BTU/HR, making it a standard specification for high-output boilers and water heaters. As a genuine OEM replacement part, it ensures factory-standard fitment and reliable performance, preventing dangerous pressure spikes that can lead to vessel fatigue or catastrophic failure. The 100111601 is ASME rated and built to meet the rigorous safety demands of modern HVACR applications. Contractors choose this water relief valve for its robust construction and precise calibration, ensuring that potable water systems and hot water boilers remain within safe operating parameters even under high-load conditions.
Key Benefits:- High-Capacity Discharge: Rated for up to 2,289,000 BTU to provide safety for large-scale commercial heating equipment.
- Precise Pressure Control: Pre-set at 125 PSI to ensure automatic relief when system limits are reached.
- OEM Compatibility: Exact replacement for Lochinvar and A.O. Smith part number 100111601, ensuring seamless integration.
- NPT Connections: Features a standard 3/4" inlet for straightforward installation into existing pipe headers or tank tappings.
- ASME Certified: Manufactured and tested in compliance with ASME Boiler and Pressure Vessel Code requirements.
What causes a relief valve to "simmer" or leak?
Simmering typically occurs when the system operating pressure is too close to the 125 PSI set point. It is recommended to maintain an operating pressure at or below 90% of the valve's rating to prevent seat leakage and premature wear.
Is the 100111601 a universal valve?
While it fits standard 3/4" NPT ports, it is a specific OEM repair part with a high BTU rating. Always verify that your equipment's nameplate requirements match the 2,289,000 BTU and 125 PSI specifications before installation.
Can this valve be used for temperature relief?
This specific model functions primarily as a pressure relief valve (PRV). For applications requiring thermal expansion protection, ensure the system also includes a properly sized expansion tank or a dedicated T&P valve if specified by local codes.
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.











