Profile: Halogen Valve Systems, Inc. manufactures emergency shutoff systems and hazardous gas detectors. We supply all fire codes authorize gas shutoff systems to replace gas scrubbers. Our Jupiter gas detector system features two settable 250 VAC-8 AMP relays, dual redundant Modbus RS-485 user interface and integral galvanic isolation. Our satellite gas detector features LCD indicator, adjustment-free calibration and 4-20mA analog output.