ScaleZERO Scale Control System for Large Tankless Water Heaters
- 4½" x 10" system with 1" ports (15-20gpm) for larger and commercial tankless water heaters.
- System protects the heat exchanger and other parts against corrosion from limescale (minerals)
- Port and gauge threads have lead-free brass inserts for durability and strength to prevent leaking, cracking and mis-threading
- Includes pressure gauge, bracket, hardware and housing wrench; all housings UV-protected
- 5-year warranty on housings; 1-year warranty on gauges