The PS-2 Series Non-Bleed Sensor eliminates bleed gas from Becker seat and nozzle type double-acting control instrumentation when corresponding control valve is at full-open or full-closed positions. This is ideal for Monitor Regulators and Standby Regulators that typically remain in the full-open or full-closed positions for extended periods of time. The PS-2 features bleed shutoff at one end of valve travel. If bleed shutoff is required at both ends of valve travel, two (2) PS-2 Non-Bleed Sensors are required.