Keep Your IsoTwist System Running Like New. Replace Filters in Minutes
Key Benefits
- Complete annual filter kit for IsoTwist 4- and 5-stage Reverse Osmosis (RO systems)
- Restores water taste and system performance
- Twist-off cartridges install in minutes—no tools, no mess
- Protects RO membrane by removing sediment and chlorine
- Maintains consistent water flow and filtration quality
- OEM replacement filters for guaranteed fit and performance
- Simple yearly maintenance—no guesswork
Built for Clean Water and Reliable RO Performance
Designed for Vertex IsoTwist system owners who rely on consistent, high-quality drinking water.
Works well in:
- Offices and breakrooms with daily water use
- Commercial kitchens and beverage stations
- Homes with RO systems for drinking water
- Facilities following scheduled filter maintenance
- Locations where water taste and quality matter daily
Multi-Stage Filtration System
Each kit replaces all pre- and post-filters in your IsoTwist system.
4-Stage System (FK-112 — 3 Filters)
-
Stage 1: Sediment Filter (TF-4113, 5 micron)
Removes dirt, rust, and debris -
Stage 2: Carbon Block Filter (TF-4115, 5 micron)
Reduces chlorine, taste, and odor -
Stage 4: Carbon Block Filter (TF-4115, 5 micron)
Final polishing for clean taste
5-Stage System (FK-113 — 4 Filters)
- Stage 1: Sediment Filter (TF-4113, 5 micron)
- Stage 2: GAC Carbon Filter (TF-4114, 10 micron)
- Stage 3: Carbon Block Filter (TF-4115, 5 micron)
- Stage 5: Carbon Block Filter (TF-4115, 5 micron)
Replacement Schedule
- All filters: Replace every 12 months
- RO membrane (sold separately): Replace every 24–36 months
Optional Accessories
- IsoTwist RO membrane (MHA-4222, 50 GPD)
- Individual replacement filters (TF-4113, TF-4114, TF-4115)
Why Businesses Choose the Vertex IsoTwist Filter System
- Fast filter changes reduce maintenance time
- OEM filters ensure proper system performance
- No tools or housings required for installation
- Predictable annual replacement schedule
- Helps avoid costly system damage from clogged filters
- Maintains consistent water quality across locations
How Many Units Do You Need?
Each IsoTwist system serves a single water source or location.
1 system → 1 filter kit per year
Examples:
- Single sink or drinking station → 1 kit/year
- Office breakroom system → 1 kit/year
- Multiple systems → 1 kit per system
Heavy usage (high volume water use):
- Replace filters more frequently than 12 months
Compare IsoTwist Filter Kits
FK-112 (4-Stage Kit)
- Includes 3 filters
- For 4-stage IsoTwist systems
- Simpler filtration setup
FK-113 (5-Stage Kit)
- Includes 4 filters
- Adds GAC carbon stage for improved odor and chlorine reduction
- Best for higher water quality demands
