000 BTU/hr relief capacity when set at its standard 15 PSI relief pressure

85" WC set point for system safety

977 Btu/h at standard rating conditions

this compact flame safeguard component provides a stable flame signal by converting UV radiation into current pulses for the amplifier

Siemens Building Technology 658-0012 Valve 328140-751 000 BTU/hr relief capacity whenThe Siemens Building Technology 658 0012 is a heavy duty 1" N O pneumatic radiator valve engineered for proportional control in two pipe steam or hot water heating systems. As part of the professional grade Siemens Powertop 658 Series, this angle union valve features a 10 Cv flow coefficient and a field tested 2 6 psi spring range. Designed for the rigors of commercial mechanical rooms, the unit includes a stainless steel stem for enhanced durability