Armstrong International Datasheets for Tempering Valves and Thermally Actuated Valves

Tempering valves and thermally actuated valves contain a thermal sensing component that opens or closes in response to temperature changes.
Tempering Valves and Thermally Actuated Valves: Learn more

Product Name Notes
Diaphragm Operated Temperature Regulator -- OB-2000
Diaphragm Operated Temperature Regulator -- OB-2000PT
Armstrong’s OB-2000 is a high-performance externally piloted temperature regulator for large-capacity applications such as heat exchangers, steam coils, steam dryers, plating tanks and parts washers. Self-actuated and requiring no external...
Diaphragm Operated Temperature Regulator -- OB-2000L Armstrong’s OB-2000L is a high-performance externally piloted temperature regulator for large-capacity, low pressure applications. Self-actuated and requiring no external energy source, the OB-2000 comes with main valve, pilot valve and...
Thermostatic Radiator Valves -- RV-4 Series Armstrong’s thermostatic radiator valves are offered in straight, angle and reversed angle patterns. Thermostatic operators provide accurate and automatic control of space temperature. They are ideal for hot water and...
Direct Acting Temperature Regulator -- OB-30
Direct Acting Temperature Regulator -- OB-31
The Armstrong OB-30/31 is a direct-acting temperature regulator that requires no external source for operation. Simple and compact, the unit is suitable for a wide variety of heating/cooling applications. Installing,...