Big New Upgrade--New packaging and smarter panel !

We have launched a big new upgrade for PG-400-AZ, it's smaller and wrapped by a stronger package. We also upgraded the panel's program, it will improve the performance of the monitor and filters-meter.

Promotion: Add the RO System and Membrane and the T33 Filter-set both in cart,
you will get the T33 set FREE.


30 Days No Reason Return


Free Delivery


1 Year Warrent


One-man-job Installation


The core components have been certified by NSF

NSF accredited third-party certification provides all stakeholders – industry, regulators, users and the general public – assurance that a certified product, material, component or service complies with the technical requirements of the referenced standard.

To all System user, Come and Join The VIP Club.

This is a no-fee and no-obligation membership. We will send special coupons, invitations of the new products trial irregularly. The huge limited time discount and lightning deals Email will arrived in your mailbox first. You can also apply for the member-only coupon.

400GPD High-flux

Tankless: No Secondary Contamination

In order to Improve efficiency of the low-flux RO membrane, most RO systems store the pure water with tank. However, long-term use of tank without cleaning can easily cause secondary water contamination.

Purify Guru choose 400G RO membrane and more powerful booster pump to increase flow to 0.278 gallon (1L) per minute. Only 12s to fill a glass bottle.


Food-grade, 304 Stainless Steel

First class thicker plate, durable at less 10 years in your Under-Sink.
The high amounts of chromium and nickel give 304 stainless steel excellent corrosion resistance.

Intelligent Drainwater Control Unit

This built-in unit intelligently adjusts drainwater/ purewater ratio. According to the tap water's TDS read, when it's good, the unit will automatically switch the machine from standard mode to smart mode, the amount of drainwater will be reduced, and the pure water flow will be bigger.
On smart mode: A glass fill fully within 10 seconds.


Built-in Monitors Make This System Invisible

On the top of the machine, the digital LCD panel showing filters' lifespan bars and beeping when the bars are empty. The built-in monitors monitoring machine status and water quality and flow conditions; and fixing issuals. You don't need to install any APPs or calculate lifespan or pay attention on status.


4-stage Filtration, Safety and Tasty

All  filters are 10 inch size, the first 3 filters remove rust, scale, heavy metals, bacteria, antibiotics, and unpleasant odors in tap water. The fourth stage enhances the taste of pure water.

Filters set box for this system on amazon:




This system using the top tier RO membrane which . The reverse osmosis membrane can remove almost all harmful substances such as heavy metal ions and antibiotics and bacteria.

Installation Video

Check out our installation video on youtube.

We are selling only on amazon.com...

Before you place an order, note this tip:
Put the $49.99 boxed filter-set and the RO system, PG-400Z into your cart at the same time, then check out, you will get a $49.99 discount.

P.S. The quantity of filter-set boxes are limited. But, we will give an attached TDS tester for free to every custmers.


Free Attached
Food-grade 304 Stainless Steel Faucet


Like the system body, the free attached faucet also made by food-grade 304 stainless steel, and with the stainless steel casting process, the inner wall of the faucet is clean and smooth.

Dual filtration switch. For washing water, using the 1st and 2nd filters. For pure drinking water, using all filter. Extend RO membrane lifespan.


400GPD RO Membrane

Special for Stainless steel Reverse Osmosis Water Filter System, PG-400-AZ


Remineralizer Filter Set

PP cotton × 2, for stage-1; CTO, Compressed activated carbon × 1, for stage-2; T55, Remineralizer × 1, for stage-4;