The Crystal Quest Thunder 4000CP is a 14-stage under-sink water filtration system that combines reverse osmosis, ultrafiltration, and ultraviolet treatment to purify drinking water at a single point of use. It is rated for 50 gallons per day and includes a pressure pump for installations with lower incoming water pressure.
Highlights
- Combines reverse osmosis, ultrafiltration, and ultraviolet sterilization in one 14-stage system
- Reverse osmosis membrane removes particles as small as 1/10,000 of a micron, including many microorganisms and inorganic contaminants
- Granulated activated coconut shell carbon (GAC) filter cartridge reduces VOCs, pesticides, and industrial solvents
- Built-in pressure pump supports installations with lower incoming water pressure
- Includes a complete installation kit: lead-free designer faucet, 3.2-gallon stainless steel pressurized holding tank, tubing, filter cartridges, membranes, and hardware
- Optional exchange cartridges available for fluoride, nitrates, arsenic, and other contaminants
Specs & Features
| Rated Output |
50 Gallons Per Day (GPD) |
| Filtration Stages |
14 |
| Unit Dimensions |
16"L x 8"W x 27"H |
| Holding Tank |
18"H x 11"D, 3.2 gal (2.0 gal usable capacity) |
| Voltage |
110V standard (220V available on request) |
| Operating Pressure Range |
35 – 60 psi (60 psi optimal) |
| Series Type |
C Series (GAC filter cartridge) with Pressure Pump (P) |
| Installation Valve |
Saddle valve (hard copper plumbing) or T-valve (flex tubing), selected at order |
- Ultraviolet Water Sterilizer stage (304 stainless steel, axial-flow reactor) rated for 99.99% reduction of bacteria, virus, and protozoa without added chemicals
- Optional leak detector/flood-prevention valve available and recommended to help guard against water damage
Details
Avermont Direct is an authorized Crystal Quest dealer. This under-sink system installs beneath a kitchen or bar sink to provide filtered, purified drinking water at that single point of use. It's suited to households wanting reverse osmosis, ultrafiltration, and UV treatment together without a whole-house installation.
Need Help?
If you have questions about this product before you order, our team is happy to help.
Email: support@avermontdirect.com
Phone: +1 (844) 455-3695
Hours: Monday–Friday, 9AM–5PM
Live Chat: Available 24/7
