Lochinvar & A.O. Smith 100274781 Valve
The Lochinvar and A.O. Smith 100274781 Pressure Relief Valve is a critical safety component designed for high-efficiency commercial boilers and water heaters. Engineered to handle a set pressure of 125 PSI, this ASME Section IV certified valve prevents catastrophic system failure by relieving excess pressure during thermal expansion or control malfunctions. This specific model features a 3/4-inch NPT inlet and outlet, providing a high BTU discharge capacity necessary for heavy-duty applications. It is a direct OEM replacement for several Lochinvar Knight and A.O. Smith Cyclone models, ensuring precise fitment and reliable blow-down performance. When performing a boiler pressure relief valve replacement, technicians must ensure the discharge piping matches the valve outlet size to maintain the rated venting capacity. This valve utilizes a corrosion-resistant internal spring and EPDM disc to ensure a tight seal and consistent boiler safety valve operation under demanding cycles.
Key Benefits for Field Installation- Precision Pressure Regulation: Fixed 125 PSI setting ensures the HVAC pressure relief valve triggers accurately to protect heat exchangers.
- OEM Compatibility: Replaces Lochinvar part 100274781 and A.O. Smith 100274781 without the need for manifold modifications.
- Industrial Build Quality: Built with high-grade brass construction to withstand the thermal stress of commercial water heater maintenance.
- Regulatory Compliance: Meets strict ASME and National Board requirements for pressure vessel safety components.
What causes a pressure relief valve to leak or "weep"?
Weeping usually indicates either a fouled valve seat due to sediment buildup or an expansion tank that has lost its air charge, causing system pressure to exceed 125 PSI during heating cycles.
Can this valve be installed in any orientation?
No, for proper A.O. Smith 100274781 valve installation, the valve must be mounted in a vertical position with the spindle upright to ensure gravity-assisted seating and proper drainage.
How do I verify if this valve is compatible with my boiler?
Check the BTU rating on the boiler nameplate against the discharge capacity stamped on the 100274781 valve tag to ensure the valve can exhaust steam faster than the boiler can produce it.
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.
Lochinvar & A.O. Smith 100274781 Valve
The Lochinvar and A.O. Smith 100274781 Pressure Relief Valve is a critical safety component designed for high-efficiency commercial boilers and water heaters. Engineered to handle a set pressure of 125 PSI, this ASME Section IV certified valve prevents catastrophic system failure by relieving excess pressure during thermal expansion or control malfunctions. This specific model features a 3/4-inch NPT inlet and outlet, providing a high BTU discharge capacity necessary for heavy-duty applications. It is a direct OEM replacement for several Lochinvar Knight and A.O. Smith Cyclone models, ensuring precise fitment and reliable blow-down performance. When performing a boiler pressure relief valve replacement, technicians must ensure the discharge piping matches the valve outlet size to maintain the rated venting capacity. This valve utilizes a corrosion-resistant internal spring and EPDM disc to ensure a tight seal and consistent boiler safety valve operation under demanding cycles.
Key Benefits for Field Installation- Precision Pressure Regulation: Fixed 125 PSI setting ensures the HVAC pressure relief valve triggers accurately to protect heat exchangers.
- OEM Compatibility: Replaces Lochinvar part 100274781 and A.O. Smith 100274781 without the need for manifold modifications.
- Industrial Build Quality: Built with high-grade brass construction to withstand the thermal stress of commercial water heater maintenance.
- Regulatory Compliance: Meets strict ASME and National Board requirements for pressure vessel safety components.
What causes a pressure relief valve to leak or "weep"?
Weeping usually indicates either a fouled valve seat due to sediment buildup or an expansion tank that has lost its air charge, causing system pressure to exceed 125 PSI during heating cycles.
Can this valve be installed in any orientation?
No, for proper A.O. Smith 100274781 valve installation, the valve must be mounted in a vertical position with the spindle upright to ensure gravity-assisted seating and proper drainage.
How do I verify if this valve is compatible with my boiler?
Check the BTU rating on the boiler nameplate against the discharge capacity stamped on the 100274781 valve tag to ensure the valve can exhaust steam faster than the boiler can produce it.
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 Lochinvar and A.O. Smith 100274781 Pressure Relief Valve is a critical safety component designed for high-efficiency commercial boilers and water heaters. Engineered to handle a set pressure of 125 PSI, this ASME Section IV certified valve prevents catastrophic system failure by relieving excess pressure during thermal expansion or control malfunctions. This specific model features a 3/4-inch NPT inlet and outlet, providing a high BTU discharge capacity necessary for heavy-duty applications. It is a direct OEM replacement for several Lochinvar Knight and A.O. Smith Cyclone models, ensuring precise fitment and reliable blow-down performance. When performing a boiler pressure relief valve replacement, technicians must ensure the discharge piping matches the valve outlet size to maintain the rated venting capacity. This valve utilizes a corrosion-resistant internal spring and EPDM disc to ensure a tight seal and consistent boiler safety valve operation under demanding cycles.
Key Benefits for Field Installation- Precision Pressure Regulation: Fixed 125 PSI setting ensures the HVAC pressure relief valve triggers accurately to protect heat exchangers.
- OEM Compatibility: Replaces Lochinvar part 100274781 and A.O. Smith 100274781 without the need for manifold modifications.
- Industrial Build Quality: Built with high-grade brass construction to withstand the thermal stress of commercial water heater maintenance.
- Regulatory Compliance: Meets strict ASME and National Board requirements for pressure vessel safety components.
What causes a pressure relief valve to leak or "weep"?
Weeping usually indicates either a fouled valve seat due to sediment buildup or an expansion tank that has lost its air charge, causing system pressure to exceed 125 PSI during heating cycles.
Can this valve be installed in any orientation?
No, for proper A.O. Smith 100274781 valve installation, the valve must be mounted in a vertical position with the spindle upright to ensure gravity-assisted seating and proper drainage.
How do I verify if this valve is compatible with my boiler?
Check the BTU rating on the boiler nameplate against the discharge capacity stamped on the 100274781 valve tag to ensure the valve can exhaust steam faster than the boiler can produce it.
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.
