Conbraco 18C-542-4-125 Valve
The Conbraco 18C-542-4-125 is a high-capacity temperature and pressure relief valve engineered for heavy-duty protection of commercial hot water storage tanks and large-scale boilers. This ASME Section IV certified valve features a rugged bronze body and stainless steel springs, ensuring long-term seat integrity in demanding hydronic environments. With a 1-1/2" Male NPT inlet and 1-1/2" Female NPT outlet, it provides a substantial 5,125,000 BTU/hr capacity, making it a critical safety component for high-output systems. The integrated 4-inch probe length ensures accurate thermal sensing, while the factory-set 125 PSI and 210°F limits prevent catastrophic tank failure. Designed for professional contractors, this Apollo 18C series T&P valve features an automatic reseating mechanism and a corrosion-resistant coated element to minimize nuisance leaks and extend service intervals in hard water applications.
Key Benefits- High BTU Discharge: Rated for 5,125,000 BTU/hr to satisfy the safety requirements of large commercial domestic hot water systems.
- Internal Durability: Equipped with stainless steel springs and a silicone seat to prevent sticking and ensure consistent pops during over-pressure events.
- Accurate Sensing: The 4" thermostat probe is positioned to provide rapid response to internal temperature spikes, exceeding CSA and ANSI Z21.22 standards.
- Corrosion Protection: Features a nylon-coated thermostat element to mitigate mineral buildup and galvanic corrosion in aggressive water conditions.
Is the 18C-542-4-125 suitable for steam boiler applications?
No, this specific model is a temperature and pressure relief valve designed for hot water heating and storage systems. For steam-only safety requirements, an ASME Section VIII or Section I safety valve should be used.
What is the difference between this and a standard 3/4" T&P valve?
This is a large-bore 1-1/2" NPT valve with a much higher flow coefficient. It is intended for commercial equipment where the BTU input exceeds the discharge capacity of standard residential-sized relief valves.
Can I install this valve horizontally?
For proper operation and to ensure the 4" probe is fully submerged in the hottest water at the top of the tank, it is recommended to install the valve vertically or in the exact orientation specified by the water heater manufacturer.
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: $1,238.63
-65%$1,238.63
$433.52Conbraco 18C-542-4-125 Valve
The Conbraco 18C-542-4-125 is a high-capacity temperature and pressure relief valve engineered for heavy-duty protection of commercial hot water storage tanks and large-scale boilers. This ASME Section IV certified valve features a rugged bronze body and stainless steel springs, ensuring long-term seat integrity in demanding hydronic environments. With a 1-1/2" Male NPT inlet and 1-1/2" Female NPT outlet, it provides a substantial 5,125,000 BTU/hr capacity, making it a critical safety component for high-output systems. The integrated 4-inch probe length ensures accurate thermal sensing, while the factory-set 125 PSI and 210°F limits prevent catastrophic tank failure. Designed for professional contractors, this Apollo 18C series T&P valve features an automatic reseating mechanism and a corrosion-resistant coated element to minimize nuisance leaks and extend service intervals in hard water applications.
Key Benefits- High BTU Discharge: Rated for 5,125,000 BTU/hr to satisfy the safety requirements of large commercial domestic hot water systems.
- Internal Durability: Equipped with stainless steel springs and a silicone seat to prevent sticking and ensure consistent pops during over-pressure events.
- Accurate Sensing: The 4" thermostat probe is positioned to provide rapid response to internal temperature spikes, exceeding CSA and ANSI Z21.22 standards.
- Corrosion Protection: Features a nylon-coated thermostat element to mitigate mineral buildup and galvanic corrosion in aggressive water conditions.
Is the 18C-542-4-125 suitable for steam boiler applications?
No, this specific model is a temperature and pressure relief valve designed for hot water heating and storage systems. For steam-only safety requirements, an ASME Section VIII or Section I safety valve should be used.
What is the difference between this and a standard 3/4" T&P valve?
This is a large-bore 1-1/2" NPT valve with a much higher flow coefficient. It is intended for commercial equipment where the BTU input exceeds the discharge capacity of standard residential-sized relief valves.
Can I install this valve horizontally?
For proper operation and to ensure the 4" probe is fully submerged in the hottest water at the top of the tank, it is recommended to install the valve vertically or in the exact orientation specified by the water heater manufacturer.
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 Conbraco 18C-542-4-125 is a high-capacity temperature and pressure relief valve engineered for heavy-duty protection of commercial hot water storage tanks and large-scale boilers. This ASME Section IV certified valve features a rugged bronze body and stainless steel springs, ensuring long-term seat integrity in demanding hydronic environments. With a 1-1/2" Male NPT inlet and 1-1/2" Female NPT outlet, it provides a substantial 5,125,000 BTU/hr capacity, making it a critical safety component for high-output systems. The integrated 4-inch probe length ensures accurate thermal sensing, while the factory-set 125 PSI and 210°F limits prevent catastrophic tank failure. Designed for professional contractors, this Apollo 18C series T&P valve features an automatic reseating mechanism and a corrosion-resistant coated element to minimize nuisance leaks and extend service intervals in hard water applications.
Key Benefits- High BTU Discharge: Rated for 5,125,000 BTU/hr to satisfy the safety requirements of large commercial domestic hot water systems.
- Internal Durability: Equipped with stainless steel springs and a silicone seat to prevent sticking and ensure consistent pops during over-pressure events.
- Accurate Sensing: The 4" thermostat probe is positioned to provide rapid response to internal temperature spikes, exceeding CSA and ANSI Z21.22 standards.
- Corrosion Protection: Features a nylon-coated thermostat element to mitigate mineral buildup and galvanic corrosion in aggressive water conditions.
Is the 18C-542-4-125 suitable for steam boiler applications?
No, this specific model is a temperature and pressure relief valve designed for hot water heating and storage systems. For steam-only safety requirements, an ASME Section VIII or Section I safety valve should be used.
What is the difference between this and a standard 3/4" T&P valve?
This is a large-bore 1-1/2" NPT valve with a much higher flow coefficient. It is intended for commercial equipment where the BTU input exceeds the discharge capacity of standard residential-sized relief valves.
Can I install this valve horizontally?
For proper operation and to ensure the 4" probe is fully submerged in the hottest water at the top of the tank, it is recommended to install the valve vertically or in the exact orientation specified by the water heater manufacturer.
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.
