Watts -GTS550S-NAGF-PT Watts Non-Branded 5 Stage Reverse Osmosis System Plastic Tank
System Performance & Capacity
Operating Requirements & Dimensions
| Manufacturer | Watts Water Technologies |
| Model Number | GTS550S-NAGF-PT |
| Inlet Pressure Range | 40-80 PSI (recommended 40 PSI minimum) |
| Maximum Water Hardness | 15 GPG (grains per gallon) |
| Installation Location | Under-sink residential applications |
| Tank Material | Plastic with butyl diaphragm |
| Application Class | Residential point-of-use drinking water |
Ideal Use Cases
The Watts GTS550S-NAGF-PT is designed for residential under-sink installation in municipal water supplies with inlet pressure between 40-80 PSI and water hardness not exceeding 15 GPG. The 5-stage filtration process begins with a sediment filter for particulate removal, followed by two carbon block pre-filters that reduce chlorine taste and odor while protecting the thin-film composite RO membrane. The 50 GPD membrane handles the primary contaminant reduction, filtering dissolved solids, heavy metals, and microorganisms, while the final polishing filter ensures fresh-tasting water at the faucet. Quick-connect fittings simplify filter changes and system maintenance without requiring a plumber. This system works best in kitchens where consistent daily water usage justifies the storage tank footprint and where water pressure meets the 40 PSI minimum for optimal membrane performance.
Original: $522.83
-65%$522.83
$182.99Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
System Performance & Capacity
Operating Requirements & Dimensions
| Manufacturer | Watts Water Technologies |
| Model Number | GTS550S-NAGF-PT |
| Inlet Pressure Range | 40-80 PSI (recommended 40 PSI minimum) |
| Maximum Water Hardness | 15 GPG (grains per gallon) |
| Installation Location | Under-sink residential applications |
| Tank Material | Plastic with butyl diaphragm |
| Application Class | Residential point-of-use drinking water |
Ideal Use Cases
The Watts GTS550S-NAGF-PT is designed for residential under-sink installation in municipal water supplies with inlet pressure between 40-80 PSI and water hardness not exceeding 15 GPG. The 5-stage filtration process begins with a sediment filter for particulate removal, followed by two carbon block pre-filters that reduce chlorine taste and odor while protecting the thin-film composite RO membrane. The 50 GPD membrane handles the primary contaminant reduction, filtering dissolved solids, heavy metals, and microorganisms, while the final polishing filter ensures fresh-tasting water at the faucet. Quick-connect fittings simplify filter changes and system maintenance without requiring a plumber. This system works best in kitchens where consistent daily water usage justifies the storage tank footprint and where water pressure meets the 40 PSI minimum for optimal membrane performance.
