When performing your annual maintenance

In most HVAC systems

this genuine replacement part allows technicians to restore factory-spec combustion without the risks of drilling out universal fittings

Durable Brass Construction: High-grade material prevents orifice deformation and resists wear from high-velocity gas flow

While it can often replace a single-pole unit for added safety

Conbraco 13-202-B15 Relief Valve Els PW 17895 When performing your annual maintenanceThe Conbraco 13 202 B15 is a professional grade steam relief valve engineered specifically for low pressure steam heating boilers. Built with a heavy duty bronze body, this 1" MNPT x 1" FNPT safety valve is factory set at 15 PSI to provide reliable overpressure protection in commercial and residential hydronic systems. With a certified capacity of 643 PPH (643 lb hr), it meets the rigorous standards of ASME Section IV, ensuring optimal discharge rates