The Watts Premier Reverse Osmosis Membrane with integrated check valve is the core filtration element for FMRO4-MAN, WP-5, and WP-4V systems, removing up to 99% of contaminants down to 1/10,000 of a micron. This semi-permeable membrane reduces TDS, sodium, arsenic, lead, perchlorate, chromium, copper, radium, and protozoan cysts including Giardia and Cryptosporidium.
SPECIFICATIONS
Membrane Performance & Ratings
Filtration Rating
1/10,000 Micron
Removes submicroscopic contaminants
Service Life
2-5 Years
Varies by water conditions and usage
Contaminant Reduction
Up to 99%
Heavy metals, chemicals, microbes
Check Valve
Integrated
Prevents backflow contamination
System Type
Residential RO
Premier standard reverse osmosis
Installation
Direct Fit
No adapters required
TECHNICAL DETAILS
Contaminant Reduction & System Data
| Manufacturer | Watts Premier |
| Product Class | Residential Reverse Osmosis Membrane |
| Contaminants Reduced | Arsenic, Lead, Perchlorate, Chromium, Copper, Radium, Giardia, Cryptosporidium, TDS, Sodium |
| Membrane Type | Semi-permeable thin film composite |
| Flow Restrictor Compatibility | In-line cleanable flow restrictor (removable and reusable) |
| Replacement Cycle | 2-5 years depending on water quality, usage patterns, and pre-filter maintenance |
| Compatible Part Numbers | 560014, 560016, 560018, 560020, 560022 |
COMPATIBILITY & APPLICATIONS
System Fitment
This membrane is engineered specifically for Watts Premier FMRO4-MAN, WP-5, WP-4V, and WP4-V reverse osmosis systems. The integrated check valve design ensures proper system operation and prevents backflow that could compromise water purity. The updated in-line flow restrictor technology used with this membrane eliminates the need to replace enclosed restrictors at each membrane change, reducing long-term maintenance costs. Ideal for residential point-of-use applications where high-purity drinking water is required.
💧 Pro Tip: Membrane life is directly tied to pre-filter maintenance. Replace sediment and carbon pre-filters on schedule to prevent fouling and maximize the 2-5 year lifespan of this RO membrane. Low water pressure or off-taste are early indicators that pre-filters need attention before membrane damage occurs.
