Blending Valves & How They Work With RO Systems

TDS Blending Valve - How Does It Work?

8/11/2016

Reverse osmosis (or nanofiltration) is a great way to achieve purified water for any application you need it for, whether it's used for drinking, cooking, brewing, growing, cleaning, or others. Some users have found that a certain mineral content is desired to bring out flavors in a craft beverage or assist in the development of young plants, so these purification systems are equipped with a special blending option to raise your TDS levels.

How Does the TDS Blend Valve Work?

We'll start with our Compact Wall Mounted TSM Reverse Osmosis Systems. These systems are suitable for well water and city-treated water sources and come in capacities from 400gpd up to 1,500gpd. The TSM-RO includes a prefilter system consisting of two cartridges containing sediment, carbon, or cat-carb filters depending on your application. Feed water from your source first enters the attached prefilter system at a pressure between 40 to 80 psi to pretreat sediment, debris, chlorine residue, or chloramine before the RO system. This prefiltered water is then fed to the RO pump which raises the pressure to about 150psi for optimum removal through the RO membrane. Purified RO product water flows out of the membrane vessel and into the nearby product water storage tank (some of our systems include a post cartridge system which the water will pass through before the storage tank). A TDS sensor is installed on the outlet membrane water line to monitor the quality of the product water right after the RO membrane.

When there is a desire for raising the TDS, we will include a TDS blending option preinstalled on our RO systems. TDS blending is incredibly simple and involves mixing your starting water source with the RO water to achieve a TDS that's desirable to your application. Since we include attached prefiltration, the feed line between the prefilter system and the RO pump is tapped so we're using filtered water, not raw water, to blend with the purified RO product water.

This filtered water is plumbed to a needle valve and the outlet of this valve is plumbed to a tee on the product water line coming out of the membrane vessel. This tee is located right before the TDS sensor so you can monitor the quality of your blended water as you adjust the needle valve.

This TDS blending option is best utilized when you're using the RO system with an atmospheric storage tank and delivery pump for assured quality control. The pressure that lets the blended water flow into the product line comes from your existing plumbing water pressure, not the RO itself. This pressure is conflicting if a bladder pressure tank is used instead of an atmospheric tank. With a pressure tank, the blend ratio and corresponding blended TDS would change continually as the bladder tank pack pressure built up, thereby reducing the amount of blend water mixing into the product water. It's difficult to achieve a constant blend with this application, but with tweaking the consumer can make their blending work with a pressure tank.

It is very common for our craft beverage makers or agriculturalists to want to adjust specific levels in their water, such as calcium, magnesium, sodium, or other salts and minerals that may be beneficial to their specific product. The TDS blending option on these RO systems is made to simply adjust the levels of total dissolved solids in your water which is perfect if you just want an overall mineral content in your water. However, if you desire a specific set of minerals, reverse osmosis is best used as your blank slate to then build back up. Brewers and growers alike will add a mineral cocktail to the purified RO water to achieve the perfect water for their individual beverages or plants. What exactly is in this mineral cocktail? Large franchises and micro-businesses both prefer to keep their mineral mix a secret, so not even we can tell you exactly how to achieve your preferred levels! What we can do is provide purified water so you know exactly what's going into your premium craft.

Find a selection of our Reverse Osmosis and Nanofiltration Systems equipped with TDS blending below for a variety of applications, including but not limited to our Brew Masters and Grow Masters!

TDS Water Blending Valves Are Included With The Following RO Systems

RainDance 400 Gallon Per Day Light Commercial Reverse Osmosis System

The RainDance Water Systems 400GPD Light Commercial Reverse Osmosis System Includes:

400gpd Stainless Steel Compact Wall Mount Reverse Osmosis System - Treats High Minerals Up To 2,500ppm TDS - Includes Color Coded RO Tubing

High Capacity / Low Energy Commercial RO System
Easy To Install, Maintain & Service
Includes: Attached Sediment & Chlorine/Chloramine Removal Prefiltration
Uses Up To Date RO System Design Software To Reduce Waste Water & Achieve A 50% Recovery.
Includes: Electronic Control Panel
Includes: Blending Valve For Precise TDS Levels
Includes: Water Totalizing Meter (Counts Gallons Used)
Includes: Instructions & Diagrams Pre-Loaded On Flash Drive
Includes: Lifetime Support & Water Testing
New Upgrades Included:
*Free Delivery - Yes
Free Service Kit - Yes
Free Replacement Filters - Yes
Free 24/7 Support Services - Yes
Free 24/7 365 WI-FI Optional Water Leak Detection - Yes
Free RO Water Usage Meter - Yes
Free Water Quality Monitors - Yes
In Stock - Yes

This system qualifies for free shipping within the continental US

TDS Blending Val﻿ve - How Does It Work?

RainDance 400 Gallon Per Day Light Commercial Reverse Osmosis System

RainDance 800 Gallon Per Day Light Commercial Reverse Osmosis System

RainDance 1200 Gallon Per Day Light Commercial Reverse Osmosis System

RainDance 1500 Gallon Per Day Light Commercial Reverse Osmosis System

RainDance 2000 Gallon Per Day Commercial Reverse Osmosis System

RainDance 4000 Gallon Per Day Commercial Reverse Osmosis System

RainDance 6000 Gallon Per Day Commercial Reverse Osmosis System

8000 Gallon Per Day Commercial Reverse Osmosis System

10000GPD Commercial Reverse Osmosis System

12000GPD Commercial Reverse Osmosis System

RainDance-400 Brew Master RO Package

RainDance-800 Brew Master RO Package

RainDance-1200 Brew Master RO Package

RainDance-1500 Brew Master RO Package

RainDance-2000 Brew Master Reverse Osmosis Package

RainDance-4000 Brew Master Reverse Osmosis Package

RainDance-6000 Brew Master Reverse Osmosis Package

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TDS Blending Valve - How Does It Work?