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Brass Service Valves for Tankless Water Heaters

  • Compatible with Tankless Gas Water Heaters
  • Includes Hot, Cold and Relief Valves
  • Easy to Install and Leak Proof
  • See More Details

Frequently Bought Together


Product Overview

Supply and Service valve kit for use with a tankless gas water heater installation. Clean brass meets the strictest Low Lead Code requirements. Provides an easy way to flush and service your new tankless water heater.
  • Hot and cold installation and service valves
  • Includes relief valve and unions
  • Clean brass for low lead codes
  • Connection for pressure relief on hot valve
  • Makes it easy for future service and flushing of tankless water heaters
  • 1-year limited warranty
  • Easy installation
  • Durable construction
  • Long performance life
  • California residents see prop 65 warnings
  • Call 1-855-400-2552 before noon for same-day installation service in most areas, or visit our Water Heater Installation page for more information.
  • California residents

Info & Guides

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Product Depth (in.)
Product Height (in.)
Product Width (in.)


Compatible Brand/Model
Various Rheem Tankless
Finish Family
Bronze/Copper Metallic
For Use With
Gas Tankless
Pack Size
Product Type
Drain Valve
Product Weight (lb.)

Warranty / Certifications

Manufacturer Warranty
1 Year Limited Warranty

Questions & Answers


Does this product have a check valve on the cold water side?

Asked by Emoneh March 6, 2021

No the yellow handle valve shuts off the cold water and the blue handle valve opens for clean out. No need for a check valve as the yellow handle valves isolates the system from the house supply lines. I like it.

The description specifically mentions Gas tankless water heaters. Is this also advisable for ele...

Asked by JAMES February 20, 2021

That is what I used on my electric unit and I like it.

Is there professional installation available?

Asked by Nana February 11, 2021

Hi Nana and thank you for your question. You can find local contractors or use the link: https://www.rheem.com/ use the link on the top right corner "find a pro"

Are these lead free?

Asked by MisterPotato December 20, 2020

Because they were new at Home Depot I assumed but I was so focused on getting the tank installed and working worrying about what they were made of was the LAST of my worries but they have functioned great.

Does this work on rinnai rucs75i

Asked by Toto December 3, 2020

Thank you for asking. As long as the water inlet and outlet are both 3/4" it will work.

What are the heat exchangers made of?

Asked by Terry October 17, 2020

Heat exchangers are made of copper.

How much a technician is charging to install a tankless water heater, if I have all parts needed?

Asked by LB September 18, 2020

I have some estimates from $700 to $1500. I decided to install by myself with the help of my brother. Since September 2020, we have installed 5 tankless water heaters by ourselves. My house, mom's, brother's and 2 of our good friends houses. I am a DIYer, no contactor.

why is there a female thread on the back of the valve

Asked by MDL July 2, 2020

It is there for the T & P valve. It must be installed as per code

Do i have to put shut of to the tankless water heater

Asked by Maurice May 1, 2020

I think you should ALWAYS have shutoff valves to ANY water using device.

Is this service valve used to flush-out tankless water heater?

Asked by dan April 18, 2020

Thank you for asking, Dan. The Service Valves are designed to make flushing the Tankless Water Heaters easier. If you have any further questions, please contact us at 1-866-720-2076. Thank you and have a great day.

Brass Service Valves for Tankless Water Heaters - page 2

Customer Reviews

  • 4.6
    out of 382 reviews
  • 89% recommend this product
Filter by:
Showing 1-10 of 382 reviews
Corrosion & Leaks after 7 Years!!
I had a plumber install a tankless water heater 7 years ago (Rinnai) and the water heater came with Webstone valves. the water is soft water which should be less corrosive than hard water. I also flush the water heater annually with white vinegar per maintenance instructions. I have turned the ball valves on/off every six months since installation to make sure they don't freeze up. When I tried to turn the Webstone cold water valve handle a few days ago, it broke off causing water to run out. Inspection showed the shaft had corroded thru. Also, attached photos of the hot water valve show 2 pin hole leaks in the "body" and a leak in the packing gland for the main shutoff. When I inspected the interior of both valves, there was considerable corrosion. I was very disappointed with the poor quality. Brass valves should last longer than this in a soft water system!!
by ddlvkl
1 person found this helpful
Very durables...
Very durables
by HomeDepotCustomer
1 person found this helpful
Don't buy it
Bought these as a set 10 years ago, went to turn off the water because the heater broke and the handle came off in my hand. Now I had a leak and no hot water. Cheap
by Mario9999
3 people found this helpful
The pressure relief valve started to leak the next day it was installed. I have tried everything ...
The pressure relief valve started to leak the next day it was installed. I have tried everything to fix it, but still leaks. It is very minimal, but should not leak at all. I love rheem products, but this one would not recommend. I would like that someone from rheem get in touch with me so that we can fix this issued.
by Lolito
3 people found this helpful
These were recommended on the Home Depot website while purchasing my Rinnai tankless water heater...
These were recommended on the Home Depot website while purchasing my Rinnai tankless water heater so I tossed these onto the order. While these are a good configuration, they don't fit well on the Rinnai. The valve levers interfered with the housing and some other pipe features and it was necessary to extend them. It's not that these don't do the trick, it's just not really configured well for use on the Rinnai. Since I didn't attempt to exchange these for something else, you might want to look at something else if you're also planning to use these in a similar installation as I did.
by Leonard
Easy to install valves with convenient shut-offs for water supply and bypass. I liked that the TP...
Easy to install valves with convenient shut-offs for water supply and bypass. I liked that the TPR valve was separate to enable installation into tight spaces. And color coded valves are great for safety. I would definitely recommend to a friend.
by Sean
Worked perfectly with the new tankless. Should make future...
Worked perfectly with the new tankless. Should make future maintenance a breeze
by Josh
Esy to use
Esy to use
by Wilson
Installed them on a new tankless water system they working with no leaks.
Installed them on a new tankless water system they working with no leaks.
by CBear2
Serves a Triple Purpose
I added Rheem Brass Service Valves when DIY installing our Rheem Tankless Electric. The Service Valves are well built and made with quality brass. The package includes the code-required relief valve. This add-on was well worth the added cost and serves a triple purpose. 1) Regular flushing is a must for longevity and reliability. 2) Code usually requires hot and cold shutoff valves for water heaters. This unit has quality ball valves on the hot and cold side. 3) this unit has union joints that will make swapping out the water heater in the future a breeze. I hope the WH lasts a long time. But, let’s face it, like any high-power appliance, WH’s eventually wear out.
by YardVark
3 people found this helpful
Showing 1-10 of 382 reviews