it features a 15mm orifice and is built to handle high differential pressures

3/8-inch CCW bore

A time-delay fuse allows this brief surge to pass

A functional silicon carbide ignitor typically reads between 40 and 90 Ohms at room temperature

Watts 0121587 Regulator R-22 it features a 15mm orificeThe Watts 0121587 (Series LFN240X 9) is a heavy duty 1 inch T&P relief valve designed for high capacity commercial hot water supply tanks and heaters. Engineered with lead free copper silicon alloy, this automatic reseating valve provides essential protection against catastrophic pressure and temperature spikes. It features a specific 9 inch stainless steel thermostat probe to ensure accurate thermal sensing deep within the tank tapping. The unit is