Laars Heating Systems R1-054 Valve 321702-401 Rely on this robust switch

Rely on this robust switch to sustain system integrity and optimize cycle performance in demanding environments

Industrial Build Quality: Constructed with heavy-duty bearings to handle the higher atmospheric stressors common in telecom and modular building HVAC setups

Article 547-4 when used with watertight connectors

Durable Construction: Nickel-plated forged brass body with stainless steel ball and stem provides long-term reliability

facilitating complete combustion and maintaining the 96% thermal efficiency ratings typical of power-vent and power-direct vent models

Laars Heating Systems R1-054 Valve 321702-401 Rely on this robust switchThe Laars Heating Systems R1 054 Valve is a high capacity pressure relief valve engineered for critical safety and performance in residential and commercial boiler systems. Designed as a direct OEM replacement part, this 3 4" male x 3 4" female relief valve is calibrated for a 30 PSI discharge threshold. With a substantial thermal capacity of 535,000 BTU, the R1 054 ensures reliable overpressure protection for high output hydronic heating systems. Its