Transmitter Isolation Ball Valves — faster, stronger, cleaner.
The best isolation valves available, built for one job. A patented 3″ full-port ball gives your transmitter a clean, unobstructed view of the process — with calibrate-in-place purge ports and a quarter-turn, bubble-tight shutoff.
Six figures. One purpose.
Every figure mounts to both standard ANSI 150# flanges and existing knife-gate patterns, so most installs are a straight swap. Choose your port size, purge configuration, and material — from 316 stainless to all Grade-5 titanium.
Fig. 305 B
3″ sensing and 3″ port. ANSI 150# four-bolt flange mount and existing knife-gate valve mounting. Single-port purge / calibration — calibrate in place. 316 SS body and wetted parts.
Fig. 305 LT
3″ sensing and 3″ port. ANSI 150# four-bolt and knife-gate mounting. Single-port purge / calibration. 317L SS body with Grade-5 titanium ball, stem, and ¼″ NPT plug.
Fig. 305 AT
3″ sensing and 3″ port. Ball, stem, ¼″ NPT plug, body, and seat retainer all in Grade-5 titanium. 304 SS handle. Quarter-turn, bubble-tight shutoff.
Fig. 105 BD
3″ sensing and 1″ port. Standard ANSI 150# flange mount. Internal purge configuration.
Fig. 105 B
3″ sensing and 1″ port. Designed as a direct upgrade for an existing knife-gate valve. Internal purge.
Fig. 115 BD
3″ sensing and 1″ port. Standard ANSI 150# flange mount. External purge configuration.
Not sure which figure fits your application?
Tell us the line, the media, and the transmitter — we’ll spec the right valve, or build one for the job.