extending the life of the heat exchanger by preventing over-firing

Utilizing a high-tensile cord reinforcement and raw-edge sidewalls

Field Adjustability: The integrated knob range adjuster allows for rapid setpoint modifications across the 25 to 215°F spectrum

Key Benefits Direct OEM Fit: Ensures seamless integration with existing Hydrotherm boiler burner assemblies without the need for field modifications

Siemens Building Technology 658-0014 Valve 321142-301 extending the life of theThe Siemens 658 0014 is a 1 1 4 inch pneumatic radiator valve designed for proportional control of low pressure steam and hot water in commercial HVAC systems. This Normally Open (NO) angle pattern valve features a 2 to 6 psi spring range, ensuring precise modulation when paired with a pneumatic controller. Constructed with a heavy duty brass body and a top mounted actuator, this valve is engineered for high cycle reliability in terminal unit