Rosemount 9935 Level Bypass Chamber

Configure Your Rosemount 9935 Level Bypass Chamber

Self-contained bypass chamber (also called a bridle) for externally mounting Rosemount level instruments to a vessel. Allows process isolation for live maintenance — replace the 5300 GWR / 5408 radar / 2120 fork switch / 9930 MLI without shutting the vessel down. Optimized for the 5300 Guided Wave Radar and the non-contacting radar transmitters (5408 / 3408). Designed to ASME B31.3 Process Piping Code (ASME B31.1 Power Piping optional). Carbon steel or 316 SST construction standard. Hydrotested to 1.5× MAWP before shipment. Flange sizes 2-in to 4-in, ANSI 150 through 2500. Schedules S10/S40/S80/S160. Bypass chambers are application-engineered to customer's vessel specs — Valley Instrument's sales engineer reviews your process media, mounting requirements, instrument-mount configuration, and vent/drain orientation, then derives the PDS-correct 26-position model number for the formal quote.