Mechanical Flow Meter with back-run stop Back Catalog number: 438115 Manufacturer: HYDRO-BIOS Availability: In the manufacturer's stock Price on request - + Recommended 445500 Rod Held Current Meter RHCM 270 Price on request 450536 Oxygen Sensor OxyGuard Ocean D.O. Probe Price on request 438150 Plastic Net Bucket with snap-in bolt Price on request