For steam service

Armstrong’s OB-2000 series valve 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 energy source, the OB-2000 series comes with main valve, pilot valve and tubing kit. Capillary units mount in any position and can be easily disconnected and interchanged, offering easy installation and maximum application flexibility. The OB-2000 series is available in sizes 1/2" through 4" (15–100 mm), with six temperature ranges and three capillary lengths.