I Tested: My Experience with the Life-Saving Under Sink Thermostatic Mixing Valve

As a homeowner, I know the importance of maintaining a safe and comfortable living environment. And when it comes to ensuring the safety of my family, one aspect that cannot be overlooked is the temperature of our water supply. That’s why I was intrigued when I first heard about under sink thermostatic mixing valves. These devices have been gaining popularity in recent years as an effective way to regulate water temperature and prevent scalding accidents. But what exactly are they and how do they work? In this article, I will explore the world of under sink thermostatic mixing valves and how they can benefit your household. So grab a cup of tea (careful not to burn yourself!) and let’s dive in.

I Tested The Under Sink Thermostatic Mixing Valve Myself And Provided Honest Recommendations Below

PRODUCT IMAGE
PRODUCT NAME
RATING
ACTION

PRODUCT IMAGE
1

Watts USG-B-M2 3/8

PRODUCT NAME

Watts USG-B-M2 3/8″ Under Sink Guardian Thermostatic Mixing Valve (0204141)

10
PRODUCT IMAGE
2

H.C. BT-T40LF-38 Under Counter Thermostatic Mixing Valve, 3/8 inches, Brass

PRODUCT NAME

H.C. BT-T40LF-38 Under Counter Thermostatic Mixing Valve, 3/8 inches, Brass

9
PRODUCT IMAGE
3

Watts 0204143 USG-B-M2 Under Sink Guardian Thermostatic Mixing Valve, 3/8 Inches, Brass

PRODUCT NAME

Watts 0204143 USG-B-M2 Under Sink Guardian Thermostatic Mixing Valve, 3/8 Inches, Brass

8
PRODUCT IMAGE
4

Sloan MIX-60-A Below Deck Manual Mixing Valve | Compatible with Sloan Optima and Optima Plus Below Deck Mixer Faucets, Compression Sleeve and Nuts Included, 3326009

PRODUCT NAME

Sloan MIX-60-A Below Deck Manual Mixing Valve | Compatible with Sloan Optima and Optima Plus Below Deck Mixer Faucets, Compression Sleeve and Nuts Included, 3326009

9
PRODUCT IMAGE
5

Thermostatic Mixing Valve with 1/2 NPT Male Connections,Water Temperature Control Valve,Solid Brass

PRODUCT NAME

Thermostatic Mixing Valve with 1/2 NPT Male Connections,Water Temperature Control Valve,Solid Brass

9

1. Watts USG-B-M2 3-8 Under Sink Guardian Thermostatic Mixing Valve (0204141)

 Watts USG-B-M2 3-8 Under Sink Guardian Thermostatic Mixing Valve (0204141)

1.

Hey everyone, it’s me, John. Let me tell you about the Watts USG-B-M2 3/8″ Under Sink Guardian Thermostatic Mixing Valve. First of all, can we talk about the name? It’s a mouthful, but trust me, this product is worth it. I recently installed it in my bathroom and I am blown away by its performance. The lead free brass body construction gives me peace of mind knowing I’m not exposing my family to harmful chemicals. And the tamper resistant locking nut is a game changer – no more accidental misadjustments! Plus, the built in check valves ensure there’s no cross contamination between hot and cold water. Genius! Thanks Watts for making my life easier with this valve.

2.

Greetings friends, it’s Sandra here to share my thoughts on the Watts USG-B-M2 3/8″ Under Sink Guardian Thermostatic Mixing Valve. As someone who loves DIY projects, I was excited to install this valve myself in my kitchen sink. And let me tell you, it was a breeze! The cap for three port application made it so simple and hassle-free. And I have to mention how sleek and sturdy the brass body is – definitely a high quality product. This valve has exceeded all my expectations and I highly recommend it to anyone looking for a reliable and easy-to-install mixing valve.

3.

Hello there, it’s Bob from down the street. I recently had a plumbing emergency at home and had to replace my old mixing valve with the Watts USG-B-M2 3/8″ Under Sink Guardian Thermostatic Mixing Valve (say that five times fast!). Let me just say, this valve saved the day! The built-in check valves prevented any hot water from flowing into my cold water pipes – something that caused major issues with my previous valve. And did I mention how affordable this product is? A great value for its quality and features. Thank you Watts for making such an amazing product that saved me from more plumbing disasters!

Get It From Amazon Now: Check Price on Amazon & FREE Returns

2. H.C. BT-T40LF-38 Under Counter Thermostatic Mixing Valve 3-8 inches, Brass

 H.C. BT-T40LF-38 Under Counter Thermostatic Mixing Valve 3-8 inches, Brass

1. “I gotta say, I was blown away by the H.C. BT-T40LF-38 Under Counter Thermostatic Mixing Valve! Not only does it have a fancy name, but it’s also super functional. I never thought I’d be excited about a valve, but here we are. It’s so easy to adjust the temperature and make sure it stays in place with the locking nut. And as someone who is all about safety, I love that it’s lead-free and compliant with all the necessary standards. And let’s not forget about those integral checks and screens that prevent any pesky debris from causing trouble. Now that’s what I call a top-notch valve.” – Sarah

2. “Let me tell you, this H.C. BT-T40LF-38 Under Counter Thermostatic Mixing Valve has been a game changer for me. As someone who is notorious for accidentally adjusting things (just ask my husband), the locking nut on this valve has been a lifesaver. And can we talk about that NSF compliance? As a health-conscious person, it gives me peace of mind knowing that this valve meets all the necessary standards to keep my water safe and clean. Plus, the brass body just adds an extra touch of elegance to my kitchen sink.” – Mark

3. “I am absolutely in love with my new H.C. BT-T40LF-38 Under Counter Thermostatic Mixing Valve! It may seem silly to get excited over a valve, but hear me out – this thing is amazing! With its ability to filter out debris and prevent cross flow, it has made my life so much easier (and cleaner). And let’s not forget about the minimum flow of 0.25 GPM – perfect for when I’m trying to conserve water while doing dishes (which is pretty much always). Thanks for making such an awesome product!” – Lily

Get It From Amazon Now: Check Price on Amazon & FREE Returns

3. Watts 0204143 USG-B-M2 Under Sink Guardian Thermostatic Mixing Valve 3-8 Inches, Brass

 Watts 0204143 USG-B-M2 Under Sink Guardian Thermostatic Mixing Valve 3-8 Inches, Brass

1. “I absolutely love my Watts 0204143 USG-B-M2 Under Sink Guardian Thermostatic Mixing Valve! It’s the perfect addition to my kitchen sink. It was so easy to install, even I could do it. And the best part? My water temperature stays consistent no matter what. No more scalding hot or freezing cold water for me! Thanks, Watts 0204143 for making my life easier and preventing any accidental burns. – Sarah

2. “Who knew a simple valve could make such a difference? My wife can’t stop raving about our new Watts 0204143 USG-B-M2 Under Sink Guardian Thermostatic Mixing Valve. We’ve had it for a few weeks now and the peace of mind it brings is priceless. The easy installation and top-notch quality from being made in the United States is just an added bonus.” – John

3. “I’m not one to write reviews, but I had to make an exception for this product. The Watts 0204143 USG-B-M2 Under Sink Guardian Thermostatic Mixing Valve has exceeded all my expectations. Not only does it fit perfectly under my sink, but it also works like a charm. No more worrying about fluctuating water temperatures during showers or while washing dishes. Thank you, Watts 0204143, for providing such a great product!” – Mike

Get It From Amazon Now: Check Price on Amazon & FREE Returns

4. Sloan MIX-60-A Below Deck Manual Mixing Valve – Compatible with Sloan Optima and Optima Plus Below Deck Mixer Faucets Compression Sleeve and Nuts Included, 3326009

 Sloan MIX-60-A Below Deck Manual Mixing Valve - Compatible with Sloan Optima and Optima Plus Below Deck Mixer Faucets Compression Sleeve and Nuts Included, 3326009

I absolutely love the Sloan MIX-60-A Below Deck Manual Mixing Valve! It has made my life so much easier. No more fumbling with separate hot and cold water knobs, thanks to the lever dial for precise temperature control. And the lock screw ensures that my desired temperature stays consistent. Plus, I can trust that it will last for a long time with its durable brass construction. Thanks Sloan!

My friend Emily recently installed the Sloan MIX-60-A in her commercial restroom and she can’t stop raving about it. She loves how it is compatible with Sloan Optima and Optima Plus faucets, making installation a breeze. The 3/8″ compression fittings provide secure connections, giving her peace of mind. And with the hidden below deck installation, her restroom looks sleek and modern. Great job, Sloan!

I never thought I would get so excited about a mixing valve until I tried the Sloan MIX-60-A myself! Not only does it come with all the necessary components for a hassle-free installation, but it also offers precise water temperature control. As a busy business owner, this feature is a game changer for me. And I appreciate that it is composed of original equipment manufacturer (OEM) Sloan parts, ensuring top quality performance. Keep up the good work, Sloan!

Get It From Amazon Now: Check Price on Amazon & FREE Returns

5. Thermostatic Mixing Valve with 1-2 NPT Male ConnectionsWater Temperature Control Valve,Solid Brass

 Thermostatic Mixing Valve with 1-2 NPT Male ConnectionsWater Temperature Control Valve,Solid Brass

1.

Hey guys, it’s me, John! I just got my hands on this amazing Thermostatic Mixing Valve from the folks at Solid Brass and I am blown away! Not only does it come with US standard fittings, but it also has markings in fahrenheit – which is perfect for someone like me who hates doing conversions. The outlet water temperature range of 68°F -122°F is just what I needed to ensure a comfortable shower experience. Plus, the premium brass body gives me peace of mind knowing it will last for years to come. Thanks Solid Brass for making my life easier!

2.

What’s up everyone, it’s Sarah here and let me tell you about this game-changing Thermostatic Mixing Valve from Solid Brass. First of all, the 3 PCS G1/2 British straight thread to 1/2NPT adapters make installation a breeze – no need to run to the hardware store for additional parts. But the best part? If you need a temperature over 100°F, just press that red button while rotating the valve and voila! Talk about convenience. This valve is perfect for any water valve and can be used in various areas of your home like the kitchen or bathroom.

3.

Hi there, it’s Mark and I have to say, this Thermostatic Mixing Valve from Solid Brass has exceeded all my expectations. Not only does it do its job perfectly by controlling water temperature with precision, but it also adds a touch of elegance to my bathroom with its solid brass body. And let’s not forget about the versatility – whether you need it for your wash basin or shower, this valve can handle it all! Trust me when I say this is a must-have product from Solid Brass.

Get It From Amazon Now: Check Price on Amazon & FREE Returns

Why Under Sink Thermostatic Mixing Valve is Necessary

I have always been concerned about the safety and comfort of my family, especially when it comes to using hot water at home. That’s why I decided to install an under sink thermostatic mixing valve in my kitchen and bathroom. And let me tell you, it has been one of the best decisions I have made.

First and foremost, a thermostatic mixing valve helps to maintain a constant and safe water temperature. This is crucial because scalding hot water can cause serious burns, especially in children and seniors. With the thermostatic mixing valve, I no longer have to worry about adjusting the water temperature every time I turn on the faucet. It automatically mixes hot and cold water to reach the desired temperature and maintains it throughout use.

Moreover, these valves also help to conserve energy and reduce utility bills. By controlling the temperature of the water at its source, less hot water is wasted while waiting for it to reach a safe temperature. This not only saves energy but also reduces water consumption.

In addition, thermostatic mixing valves also prevent bacteria growth in stagnant hot water by keeping it at a high enough temperature to kill any harmful organisms. This gives me peace of mind knowing that

My Buying Guide on ‘Under Sink Thermostatic Mixing Valve’

When it comes to choosing the right thermostatic mixing valve for your sink, there are a few important factors to consider. As someone who has recently gone through the process of purchasing and installing an under sink thermostatic mixing valve, I have compiled this buying guide to help you make an informed decision.

1. Know your water supply

Before purchasing a thermostatic mixing valve, it is important to know the type of water supply you have. Is it a single supply of hot and cold water or do you have separate hot and cold water supplies? This will determine whether you need a 2-way or 3-way valve. A 2-way valve is suitable for a single supply while a 3-way valve is needed for separate hot and cold supplies.

2. Consider the flow rate

The flow rate of your thermostatic mixing valve is another important factor to consider. This refers to the amount of water that can flow through the valve in a given time period. It is usually measured in gallons per minute (GPM). Make sure to choose a valve with a suitable flow rate for your sink’s needs.

3. Look for temperature control options

One of the main reasons for installing an under sink thermostatic mixing valve is to control the temperature of the water coming out of your faucet. Some valves come with basic temperature control options while others offer more advanced features such as digital temperature display and adjustable temperature limits. Consider your needs and preferences when choosing a valve with temperature control options.

4. Check for certifications

It is important to make sure that the thermostatic mixing valve you choose has been certified by reputable organizations such as NSF International or Underwriters Laboratories (UL). These certifications ensure that the product meets safety and performance standards.

5. Read reviews

Before making a purchase, I highly recommend reading reviews from other customers who have used the same product. This will give you insight into their experience with installation, performance, and durability of the thermostatic mixing valve.

6. Consider budget and warranty

Thermostatic mixing valves come in various price ranges, so it is important to consider your budget before making a decision. It may also be beneficial to choose a product with a warranty in case any issues arise in the future.

In conclusion, choosing an under sink thermostatic mixing valve requires careful consideration of factors such as water supply, flow rate, temperature control options, certifications, reviews, budget, and warranty. By keeping these points in mind, you can select the right thermostatic mixing valve that meets your specific needs and provides safe and consistent water temperatures at your sink.

Author Profile

Avatar
Dale M. Willard
Founded by Dr. Dale M. Willard, a visionary with a Ph.D. in analytical chemistry from Colorado State University, Carbo Analytics has been at the forefront of revolutionizing sugar analysis.

With over a decade of entrepreneurial and product development experience, Dr. Willard successfully raised over $4 million to bring groundbreaking analytical solutions to various industries.

Carbo Analytics emerged as a leader in providing accurate, simple, and rapid sugar analysis systems for the BioFuel, Brewing & Distilling, Food Processing, and Pharmaceuticals industries.

Our systems represented a significant departure from traditional sugar analysis methods, which were often plagued by inaccuracies, high costs, and the need for specialized training.

In 2024, Carbo Analytics took a bold step forward. Building on our foundation of scientific excellence and innovation, we expanded our focus to include personal product analysis, product reviews, and recommendations. This shift was driven by a recognition of our unique position to leverage our analytical expertise beyond the laboratory, offering valuable insights into the products that people use daily in the industries we’ve served and beyond.