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CMI

CMI Inc - 3/4 Inch Tankless Water Heater Isolation Service Valve with Pressure Relief Valve – Female to Female Connection – Flush Kit for Gas & Electric Models, PEX Core

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Availability: In Stock.
Fulfilled by Amazon
Arrives Monday, Aug 3
Order within 15 hours and 29 minutes
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Features

  • EASY INSTALLATION: This 3/4 inch tankless water heater flush kit includes (1) Hot Valve, (1) Cold Valve, and (1) Pressure Relief Valve. Comes with FREE Teflon Seal Tape, ensuring a smooth installation for both gas and electric systems.
  • INDUSTRY-STANDARD MATERIAL: Crafted from high-quality brass, this tankless water heater isolation valve meets low lead requirements, providing durability and safety for both residential and commercial settings.
  • QUICK CONNECTION: The Pressure Relief Valve is included for easy integration with the hot valve, allowing for efficient installation and maintenance. Ideal for flushing and preventing backflow in your water heater system.
  • WIDE COMPATIBILITY: Suitable for major tankless water heater brands. This valve setup works with various models, including propane and natural gas units.
  • WE ARE CHARMAN MANUFACTURING: Charman has provided high-quality Pipe,Valve,Fitting products nationwide since 2006.We have been supplying PVF products and related items for residential, commercial, and industrial applications.

Material: Brass


Brand: CMI


Exterior Finish: Brass


Inlet Connection Size: 0.75 Inches


Inlet Connection Type: Press


Outlet Connection Type: FNPT


Number of Ports: 2


Outlet Connection Size: 0.75 Inches


Specification Met: Low lead compliance


Manufacturer: Kahenian GFIDC International


Material: ‎Brass


Brand: ‎CMI


Exterior Finish: ‎Brass


Inlet Connection Size: ‎0.75 Inches


Inlet Connection Type: ‎Press


Outlet Connection Type: ‎FNPT


Number of Ports: ‎2


Outlet Connection Size: ‎0.75 Inches


Specification Met: ‎Low lead compliance


Manufacturer: ‎Kahenian GFIDC International


UPC: ‎847877053032 847877052967


Part Number: ‎3005IPS


Item Weight: ‎4.29 pounds


Package Dimensions: ‎8.5 x 8.27 x 5.2 inches


Item model number: ‎3005IPS


Size: ‎3/4 inch


Style: ‎3/4" IPS


Installation Method: ‎IPS


Item Package Quantity: ‎1


Special Features: ‎Lead-Free


Batteries Included?: ‎No


Batteries Required?: ‎No


Date First Available: August 28, 2019


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Aug 3

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
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  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • these valves along with a flush kit will prolong the life of the tankless water heater.
Review Image by RONALD HOLLANDER RONALD HOLLANDER
Good quality, easy install works well
Reviewed in the United States on October 2, 2025 by RONALD HOLLANDER RONALD HOLLANDER
    • Tankless water heater bypass kit
This is exactly as described, it arrived as promised, appears to be well made, and a good value for the money I just wish they would put a packing slip in the package. This came in the manufacturers packaging 👍 Limited or no single use plastic 👍 No polystyrene foam packing (styrofoam) 👍👍
Reviewed in the United States on February 5, 2025 by Kenny from Holopaw
    • Works great
Review Image by plemans plemans
I installed this on my tankless water heater and its working well so far. Zero leaks, was easy to install, and I love the included pressure gauge. I've always wanted to check what pressure I was at and this made it easy to confirm.
Reviewed in the United States on December 10, 2024 by plemans plemans
    • Just what I needed
Installed a tankless water heater and these worked perfectly. A must have when installing a tankless water heater and the price was the best I found. And as opposed to another reviewer that said it doesn't come with the free water pressure gauge.. mine did.. came with everything as in the posting. It was included separate from the box with the valves so maybe his just didn't get thrown in by mistake. ... show more
Reviewed in the United States on September 22, 2024 by Woggers
    • Good quality product
Easy installation. Works as described
Reviewed in the United States on April 22, 2024 by Amazon Customer
    • Makes flushing and cleaning your Instant Water heater very easy
Good quality solid brass construction. I had my on-demand water heater installed over 14 years ago and the plumber did not have these bypass valves on it. I only just became aware of the need for yearly flushing on these water heaters recently. Watched some YouTube videos and saw similar bypass valves so I ordered these on Amazon. With a little copper plumbing skills including soldering, I had these valves installed in about an hour. Then ran my vinegar solution thru the water heater for about 2 hours. I was amazed at how much build up was washed out of the heater. My pressure seems better and my water heats up quicker than it has in years. ... show more
Reviewed in the United States on March 18, 2024 by David Walker
    • A must have.
Review Image by tbonetone tbonetone
This kit is a must have for tankless water heaters. Hook up is simple and easy. Cost is reasonable. When you flush your tankless water heater every year, this kit will make it super easy. And will add many extra years of life to your tankless water heater. (Almost like when you clean your coffee pot.) ... show more
Reviewed in the United States on August 7, 2024 by tbonetone tbonetone
    • Delivered what it promised
Why did you pick this product vs others?: Quality product
Reviewed in the United States on July 10, 2025 by Jack Stempien

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