if your current spring is violet

making it the standard replacement for the 221455A/U part number

Dual-Rated Voltage: Operates efficiently at both 370 VAC and 440 VAC

The Watts 0066090 is a heavy-duty 3/4 inch T&P relief valve engineered for critical temperature and pressure protection in water heater and storage tank applications

Ease of Installation: Standard 2-wire 10k ohm design allows for rapid field replacement during routine maintenance or emergency HVAC repair

Harris AL200RC Alcor Fluxed Aluminum Alloy if your current spring isThe Harris AL200RC Alcor Fluxed Aluminum Alloy is a professional grade, cadmium free brazing filler metal engineered specifically for high integrity repairs on aluminum components. Designed with a non corrosive flux core, this alloy eliminates the requirement for external flux application, significantly reducing bench time and preventing contamination in sensitive systems. With a precise eutectic melting point of 824F (440C), Alcor provides