ISD

Compact pressure control for safer pneumatic instrumentation performance

The Welker ISD Instrument Regulator is a compact, spring-loaded pressure regulator designed to reduce high-pressure filtered gas or instrument air to a lower outlet pressure for downstream pneumatic instruments. Built for small enclosures, panel mounting, and conditioning systems, the ISD helps protect sensitive equipment from pressure-related damage and operating interruptions. With multiple flow coefficients, pressure control ranges, port configuration options, 316/316L stainless steel body and trim, and tool-free maintenance, the ISD provides dependable instrument gas pressure control in natural gas, oil, and petrochemical applications.