Siemens 42H100 NSNBC01 Regulator Valve

Siemens 42H100 NSNBC01 Regulator Valve is a high-flow, two-stage pressure regulator from Siemens' 42H Nullmatic family, designed to regulate compressed air to a stable 1.5–100 PSIG output. It is a pilot-operated, null-balance device that maintains consistent outlet pressure across wide fluctuations in supply pressure and flow, making it suitable for pneumatic instrument circuits, test stands, and production fixtures where precise pressure control is essential. In Siemens documentation for the 42H series, the 42H‑100 option provides an output range up to 100 PSIG with a recommended supply around 150 PSIG and a maximum supply up to 500 PSIG for best performance. The regulator offers high-flow capacity to support rapid changes in demand without overshoot, and it is designed for use with compressed air in industrial automation and instrumentation deployments. The NSNBC01 designation identifies a specific configuration within the 42H100 family that Siemens uses to specify optional features in the high-capacity regulator line. This model is typically integrated into air-control systems where stable pressure is critical for downstream actuators, sensors, and pneumatic tooling.