
Conbraco 18C-511-5-125 Valve
The Conbraco 18C-511-5-125 is a high-capacity Apollo T&P relief valve designed for heavy-duty protection in commercial hot water heaters and large storage tanks. Engineered with a durable bronze body and a corrosion-resistant coated 5" probe, this valve ensures reliable safety by monitoring both internal temperature and pressure levels. The unit is factory-set at 125 PSI and 210°F, featuring a massive discharge capacity of 1,619,000 BTU/hr to handle high-demand hydronic systems. With a standard 3/4" Male NPT inlet and a 3/4" Female NPT outlet, it integrates seamlessly into existing piping layouts. This ASME Section IV certified safety device utilizes a silicone seat disc for a tight seal and a stainless steel spring for consistent mechanical response. Field technicians value the 18C-511 series for its robust construction and compliance with ANSI Z21.22 and CSA 4.4 standards, making it the industry standard for commercial water heater safety valves.
Key Benefits:
- High BTU Capacity: Rated for 1,619,000 BTU/hr, making it suitable for large-scale commercial boiler and water heater applications.
- Corrosion Resistance: Features a protective nylon coating on the 5" thermal element to prevent scale buildup and extend service life in harsh water conditions.
- Certified Safety: Meets rigorous ASME Section IV and CSA requirements, ensuring local code compliance for commercial installations.
- Superior Materials: Built with an ASTM B584 bronze body and silicone seat for high-temperature durability and leak prevention.
Common Questions:
What is the maximum BTU rating for the Conbraco 18C-511-5-125?
This valve is capacity-certified at 1,619,000 BTU/hr, specifically engineered to vent high-energy loads in commercial settings effectively.
Can this valve be used on residential water heaters?
While it fits standard 3/4" connections, its 125 PSI setting and high BTU rating are specifically optimized for commercial-grade equipment. Always verify your tank’s maximum allowable working pressure (MAWP) before installation.
Does this model include a manual test lever?
Yes, it includes a standard test lever to verify the mechanical movement of the internal spring and seat during routine safety inspections.
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: $238.19
-65%$238.19
$83.37Conbraco 18C-511-5-125 Valve
The Conbraco 18C-511-5-125 is a high-capacity Apollo T&P relief valve designed for heavy-duty protection in commercial hot water heaters and large storage tanks. Engineered with a durable bronze body and a corrosion-resistant coated 5" probe, this valve ensures reliable safety by monitoring both internal temperature and pressure levels. The unit is factory-set at 125 PSI and 210°F, featuring a massive discharge capacity of 1,619,000 BTU/hr to handle high-demand hydronic systems. With a standard 3/4" Male NPT inlet and a 3/4" Female NPT outlet, it integrates seamlessly into existing piping layouts. This ASME Section IV certified safety device utilizes a silicone seat disc for a tight seal and a stainless steel spring for consistent mechanical response. Field technicians value the 18C-511 series for its robust construction and compliance with ANSI Z21.22 and CSA 4.4 standards, making it the industry standard for commercial water heater safety valves.
Key Benefits:
- High BTU Capacity: Rated for 1,619,000 BTU/hr, making it suitable for large-scale commercial boiler and water heater applications.
- Corrosion Resistance: Features a protective nylon coating on the 5" thermal element to prevent scale buildup and extend service life in harsh water conditions.
- Certified Safety: Meets rigorous ASME Section IV and CSA requirements, ensuring local code compliance for commercial installations.
- Superior Materials: Built with an ASTM B584 bronze body and silicone seat for high-temperature durability and leak prevention.
Common Questions:
What is the maximum BTU rating for the Conbraco 18C-511-5-125?
This valve is capacity-certified at 1,619,000 BTU/hr, specifically engineered to vent high-energy loads in commercial settings effectively.
Can this valve be used on residential water heaters?
While it fits standard 3/4" connections, its 125 PSI setting and high BTU rating are specifically optimized for commercial-grade equipment. Always verify your tank’s maximum allowable working pressure (MAWP) before installation.
Does this model include a manual test lever?
Yes, it includes a standard test lever to verify the mechanical movement of the internal spring and seat during routine safety inspections.
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.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Conbraco 18C-511-5-125 is a high-capacity Apollo T&P relief valve designed for heavy-duty protection in commercial hot water heaters and large storage tanks. Engineered with a durable bronze body and a corrosion-resistant coated 5" probe, this valve ensures reliable safety by monitoring both internal temperature and pressure levels. The unit is factory-set at 125 PSI and 210°F, featuring a massive discharge capacity of 1,619,000 BTU/hr to handle high-demand hydronic systems. With a standard 3/4" Male NPT inlet and a 3/4" Female NPT outlet, it integrates seamlessly into existing piping layouts. This ASME Section IV certified safety device utilizes a silicone seat disc for a tight seal and a stainless steel spring for consistent mechanical response. Field technicians value the 18C-511 series for its robust construction and compliance with ANSI Z21.22 and CSA 4.4 standards, making it the industry standard for commercial water heater safety valves.
Key Benefits:
- High BTU Capacity: Rated for 1,619,000 BTU/hr, making it suitable for large-scale commercial boiler and water heater applications.
- Corrosion Resistance: Features a protective nylon coating on the 5" thermal element to prevent scale buildup and extend service life in harsh water conditions.
- Certified Safety: Meets rigorous ASME Section IV and CSA requirements, ensuring local code compliance for commercial installations.
- Superior Materials: Built with an ASTM B584 bronze body and silicone seat for high-temperature durability and leak prevention.
Common Questions:
What is the maximum BTU rating for the Conbraco 18C-511-5-125?
This valve is capacity-certified at 1,619,000 BTU/hr, specifically engineered to vent high-energy loads in commercial settings effectively.
Can this valve be used on residential water heaters?
While it fits standard 3/4" connections, its 125 PSI setting and high BTU rating are specifically optimized for commercial-grade equipment. Always verify your tank’s maximum allowable working pressure (MAWP) before installation.
Does this model include a manual test lever?
Yes, it includes a standard test lever to verify the mechanical movement of the internal spring and seat during routine safety inspections.
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.












