The Blue White 70000-618 Tube Indicator Glass is a simple, reliable flow-verification accessory combining a glass-float indicator with 10 feet of flexible 3/8-inch tubing. Designed for use in chemical, feed, water treatment, pool/spa, or industrial fluid systems, the indicator provides a clear, visual confirmation of liquid flow as fluid moves through the tubing, an internal float rises and falls, making it easy to verify that your pump is drawing or dispensing fluid.

This indicator helps detect pump failures, suction leaks, or flow interruptions at a glance — without tools or gauges. It’s ideal for applications where a quick visual check is more practical than installing a full flow meter, and it integrates seamlessly with standard 3/8" tubing setups.

Features:

• OEM Blue White Industries Tube Indicator (model 70000-618)
• Includes 10 feet of 3/8″ OD flexible tubing pre-assembled with glass indicator tube
• Visual flow indicator: internal float shows fluid movement no power or calibration required
• Useful for chemical feed systems, pool/spa feeders, water treatment setups, and similar applications
• Helps quickly detect flow issues (blocked lines, pump failure, air suction)
• Simple installation on standard 3/8″ tubing runs ideal for retrofit or maintenance use