143549, 3 Color Differential Pressure Needle Gauge
- 3 Color Differential Pressure Needle Gauge
- Gauge Tells the User When to Change the Filters While the Filter is in Operation
- Easily Mounts Directly to MM (Meter Mount) Caps with Screws Provided
- Can be Read from Both Sides
- Needle Points to International Standard Color to Determine when Filter Needs to be Changes
- Green (Clean) 0-6 psid
- Yellow (Change) 6-9 psid
- Red (Dirty) 9-12 psid
- Replaces the obsolete 143550
