The step-open mechanism allows a lower initial gas pressure (0

Reliable Construction: High-grade soldering and relays designed to withstand thermal cycling and high-amperage draw of blower motors

it utilizes a single-pole double-throw electrical configuration to allow for both normally open and normally closed circuit logic

systems often suffer from significant airflow reduction

Conbraco 10-614-01 Valve 326058-757 The step-open mechanism allows aThe Conbraco 10 614 01 Valve (Apollo Series 10 600) is a heavy duty, ASME Section IV certified hot water safety relief valve designed specifically for hydronic heating boilers and high capacity water systems. This industrial grade bronze relief valve features a unique 3 4" Female NPT inlet and an expanded 1" Female NPT outlet, allowing for superior flow rates and rapid pressure dissipation in the event of a system overpressure. Factory set at 15 PSI,