Conbraco 18C-402-27 Valve

The Conbraco 18C-402-27 is a professional-grade Temperature and Pressure Relief Valve (T&P valve) specifically engineered for the protection of high-capacity water heaters and storage tanks. This safety-critical component features a 3/4" MNPT inlet and a 3/4" FNPT outlet, built with a heavy-duty ASTM B584 bronze body to handle the rigors of commercial and industrial hydronic systems. With a fixed pressure setting of 125 PSI and a maximum temperature rating of 210??F, it ensures consistent system safety by discharging excess pressure or thermal expansion before residential or commercial vessels reach critical limits.

Designed for reliability in the field, this valve utilizes a 1.5-inch element coated with a unique non-metallic material to prevent galvanic corrosion and mineral buildup, which are common failure points in hard water applications. The 95,000 BTU/hr CSA rating makes it a standard choice for contractors performing maintenance or new installations on code-compliant domestic hot water systems. This ASME Section IV rated valve also incorporates a stainless steel spring and a silicone seat for positive shut-off and leakage prevention after emergency activation.

• Corrosion Protection: The non-metallic thermo-bonded coating on the 1.5" element isolates the probe from aggressive water chemistry, preventing electromechanical failure.
• Code Compliance: Meets ASME Section IV and ANSI Z21.22 standards, ensuring the installation satisfies HUD/FHA and local mechanical code requirements.
• Durable Construction: Features a high-strength cast bronze body and stainless steel spring for long-term survival in high-heat environments.
• Standard Fitting: The 3/4" Male x 3/4" Female configuration allows for straightforward integration into existing tank tapings and discharge piping.

• Can this valve be used on steam boilers? This specific model is a T&P valve designed for hot water heaters and storage tanks; consult the ASME Section IV rating for specific hydronic heating applications.
• Does the 1.5" element length impact compatibility? Yes, the 1.5" element must be fully immersed in the top 6 inches of the tank to accurately sense temperature spikes.
• What is the relief capacity? This valve is CSA rated at 95,000 BTU/hr, meaning the water heater's input must not exceed this value for safe operation.

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.