The 11 Best Flush Valves For Tankless Water Heater (2022 reviews)

flush valves for tankless water heater
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If you are looking for collection of best flush valve for tankless water heaters, This page is just for you.

Our review process:

Our Top Picks:

Best Overall:
Buy: Rheem Flush Valve For Tankless Water Heater
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Best For Cold Set:
Buy: Kozyvacu Flush Valve For Tankless Water Heater
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Best For Bucket:
Buy: My Plumbingstuff Flush Valve For Tankless Water Heater
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Best For Easy Identification:
Buy: Libra Supply Flush Valve For Tankless Water Heater
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Best For Well Water:
Buy: Hqmpc Flush Valve For Tankless Water Heater
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Best For Part Number:
Buy: Noritz Flush Valve For Tankless Water Heater
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Best With Reasonable Price:
Buy: Watts Flush Valve For Tankless Water Heater
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Best For Making Installation:
Buy: Metpure Flush Valve For Tankless Water Heater
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Best For Direct Replacement:
Buy: Matsui Flush Valve For Tankless Water Heater
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Best For Worth The Price:
Buy: Webstone Flush Valve For Tankless Water Heater
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Best For Customer Service:
Buy: Vav Flush Valve For Tankless Water Heater
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Best Overall: Rheem Flush Valve For Tankless Water Heater

Rheem Flush Valve For Tankless Water Heater
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The Rheem Flush Valve For Tankless Water Heater is specially designed for your daily purpose and has plenty of most useful features. The rheem flush valve for tankless water heater fits perfectly and it allows for great functionality. Make sure this fits by entering your model number. These hot and cold water service valves simplify installation and service by combining multiple valves and connections in a single part.

The valve allows for a perfect fit, it provides great value and has a good - quality design. Moreover, the valve fits all models of rheem gas tankless water heaters. Above all, the rheem flush valve for the tankless water heater worked perfectly and it is black.

Almost all buyers quickly discovered that the valve is how they flush the system to diagnose the problem. And, a few also found that the valve makes acid flushing easier. And, they also found that this valve will save a ton of time and effort when maintaining a tankless water heater.

Top Customer Quotes:
  • This will help keep eco 11.
  • This has vent termination and it is great for customer service.
  • Clean brass for California low lead codes.
  • This can be used on new install of Rinnai w/h from Lowes.

Best For Cold Set: Kozyvacu Flush Valve For Tankless Water Heater

Kozyvacu Flush Valve For Tankless Water Heater
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If you often find yourself confused about convenient and suitable valve, Kozyvacu Flush Valve For Tankless Water Heater is your solution. The kozyvacu flush valve for tankless water heater has used thread tape and has a good quality design. Make sure this fits by entering your model number. And, it is worth the price, It works great and has a flexible design.

Lastly, the kozyvacu flush valve for tankless water heater is top quality and it works well for a low price.

Most customers opine that the valve is easy to install and makes it easy for tankless heater maintenance of flushing with the independent valves. Also, they also found that the valve can be installed with rigid or flex supply lines.

Why We Like This:
  • ✅Hi-flow hose drains ( 500 wog) &pressure relief valve ( 150 psi/200k btu).
  • ✅Full port brass ball valves with adjustable packing gland.
  • Hot and cold set tankless water heater service valve with female npt connectors.
  • 3/4 ips lead free isolator with lead free pressure relief valve.

Best For Bucket: My Plumbingstuff Flush Valve For Tankless Water Heater

My Plumbingstuff Flush Valve For Tankless Water Heater
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The plumbingstuff flush valve for the tankless water heater is suitable and reliable and fits well with your daily needs. The plumbingstuff flush valve for the tankless water heater is designed to worth every penny, has dump the vinegar and it is perfect for first grade. This tankless water-heater cleaning kit includes everything you need to fully maintain your water-heating system. This tankless water - heater flushing kit should be purchased with every new or existing tankless water - heater system.

The valve is built with clear instructions and it helps maintain efficient. Further, this is a nonhazardous, noncorrosive, nontoxic, and biodegradable descaler that is heavily fortified with wetting and penetrating agents, which actually dissolve water scale, lime, mud, rust, and other water-formed deposits from portable water-heater and tankless systems. Above all, the my plumbingstuff flush valve for the tankless water heater is white, It is very happy and has a good quality design.

Almost all buyers agree that the valve has a tankless heater and want to give it a whirl. In addition, they also found that the valve is easy to follow, and the kit is easy to attach and operate. In addition, a few say that this kit is worth the money as the components are high quality and guaranteed to work with each other. Without any doubt, this valve passed the test and had very satisfied buyers eager to share their experience.

Top Customer Quotes:
  • This is stainless, it has a stop process and has a water heater design.
  • This comes with flow aide liquid.
  • These are copied from the rinnai tankless instructions which also included labeled illustrations.
  • This will suck air instead of vinegar.

Best For Easy Identification: Libra Supply Flush Valve For Tankless Water Heater

Libra Supply Flush Valve For Tankless Water Heater
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Libra Supply is known for creating pragmatic and minimalist valves for people on the go, and its line of libra supply flush valves for tankless water heaters definitely falls in line with that reputation. The Libra Supply Flush Valve For Tankless Water Heater is designed with 1/4 red and blue handles for easy identification and use according to color. Ensures better flow rate and smooth operations. The integrated drain valve has brass safety caps to allow easy maintenance.

The valve features 3/4 500wog valves additionally features both hot and cold valves. In addition, it works well, it works great and has a smart design. Lastly, the libra supply flush valve for tankless water heater is designed for a great price, It is very happy and has a water heater design.

Most customers agree that the valve has a lower flow rate. Further, a few strongly agree that the valve comes with a relief valve and an easy drain for maintenance. Moreover, a few strongly agree that the valve is a great replacement for the watts purge and balancing valve. To sum up, at the price, they believe that they got a steal of a deal with it.

Top Customer Quotes:
  • This is tough, is fit great and it is very professional.
  • This including a pressure valve is a plus.
  • This comes with a union coupling on the heater side for easy service disconnect.
  • This is often used for heavy-duty plumbing connections.

Best For Well Water: Hqmpc Flush Valve For Tankless Water Heater

Hqmpc Flush Valve For Tankless Water Heater
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The features department is where Hqmpc Flush Valve For Tankless Water Heater truly manages to shine. The hqmpc flush valve fortankless water heater appears to be good quality, It is great quality and has a water heater design. Make sure this fits by entering your model number. In addition, the valve is made of brass and it is very nice. Lastly, the hqmpc flush valvefor tankless water heater is impressive, is designed for a great price, It is made for good value and has a good quality design.

Most buyers quickly discovered that the valve is great for maintenance activities on tanklesswater heaters. Moreover, they strongly agree that the valve is made of very good quality and is quite heavy. Also, they also found that this is a great diverter kit for flushing a tankless water heater.

Top Customer Quotes:
  • This item comes with a pressure relief valve and is threaded on both sides.
  • Good brand reputation.

Best For Part Number: Noritz Flush Valve For Tankless Water Heater

Noritz Flush Valve For Tankless Water Heater
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If you often find yourself confused about convenient and suitable valve, Noritz Flush Valve For Tankless Water Heater is your end point. The noritz flushvalve for tankless water heater comes with a great item, works perfectly and it works well for a low price. Valve kits are an essential component for heater service and should be installed on all tankless water heaters. Moreover, it works with exact match and it is built with great quality.

Finally, the noritz flush valve for tankless waterheater is cost effective and it is great for a great price.

Most buyers found that the valve is a great service valve for Noritz brand tankless water heater. Further, they say that the valve is used to disconnect including isolation valves. Also, they say that the valve matches with your tank-less heater needs. In short, at the price, they believe that they got a steal of a deal with it.

Top Customer Quotes:
  • Fits all other tankless brands with a 3/4" inlet and outlet.
  • Fits all noritz models except nc132m/nc380 and ncc300.
  • This fits all Noritz models except nc132m/nc380 and ncc300.
  • 3/4" lead free isolation valve kit with female threaded connections.

Best With Reasonable Price: Watts Flush Valve For Tankless Water Heater

Watts Flush Valve For Tankless Water Heater
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Compared with other valves in this category, the Watts Flush Valve For Tankless Water Heater has a convenient design. The watt flush valve for the tankless water heater is sturdy and it is of great quality. Make sure this fits by entering your model number. Also, the valve offers more at a reasonable price, It is perfect fit and has a good quality design.

Most importantly, the watt flush valve for the tankless water heater is tough, it fits perfectly and has a water heater design.

Almost all buyers opine that the valve is easy to install and does the job designed for. Also, a few say that the valve is a great, well made shut-off valve & cleanout assembly for use with tankless water heaters. Overall, most customers agree that the valve is functionally comfortable and no one questions it.

Why We Like This:
  • This would be perfect with excellent quality, straight forward and it is very sturdy.
  • Good brand reputation.

Best For Making Installation: Metpure Flush Valve For Tankless Water Heater

Metpure Flush Valve For Tankless Water Heater
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Metpure line of valves comes in a pretty wide variety of styles, so you can definitely find one that suits your individual preferences and needs. The Metpure Flush Valve For Tankless Water Heater is yellow and it makes for easy installation. Make sure this fits by entering your model number. This kit could be used in both residential and commercial gas tanklesswater heater applications with maximum water pressure at 150psi and a 200k btu gas rating.

The valve works with all 3/4" lines of propane and natural gas tankless water heater brands such as rinnai, noritz, rheem, takagi, navien and many more. Moreover, the valve is put together for contractors, plumbers, builders, service personnel, home owners, and alike who are looking for a comprehensive kit that could help them complete their tankless water heater install. Above all, the metpure flush valvefor tankless water heater is sturdy, is great for a complete set and it is very durable.

Almost all customers agree that the valve has a second "off-shoot" as a purge. In addition, a few also found that the valve includes a set of tankless isolation valves which serve the purpose of flushing the tankless unit for periodic maintenance. In conclusion, most buyers agree that the valve suits them best, and no one questions it.

Top Customer Quotes:
  • It is easy to crack the metal hoses by bending to fit.
  • The components are certified lead free, including the isolation valve kit with nsf certification.
  • This is tough, is designed for a great price and it worked the first time.
  • This is made with excellent quality and it is top quality.

Best For Direct Replacement: Matsui Flush Valve For Tankless Water Heater

Matsui Flush Valve For Tankless Water Heater
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The Matsui line of valves comes in a pretty wide variety of styles, so you can definitely find one that suits your individual preferences and needs. The Matsui Flush Valve For Tankless Water Heater fits perfectly, it is durable and has a good quality design. Make sure this fits by entering your model number. Moreover, the valve allows for a perfect fit, It is made with good products and has a waterheater design.

Finally, the matsui flushvalve for tankless water heater fits with a recess box/pipe cover, color coded valve handles for easy identification of hot and cold valves.

Almost all buyers agree that the valve is made in China to Japanese specifications in order to reduce the cost. Also, a few strongly agree that this kit allows for the annual “ flush cleaning ” of limescale in a water tank, heater, or tankless water heater. Overall, many have used the valve for more than a few months without any issues, and it shows no sign of giving up.

Why We Like This:
  • 100% leak tested, standard brass version, pressure relief valve included.
  • Heavy duty forged brass construction, unique hexagon lever designed to prevent misuse.
  • New and hot releases.

Best For Worth The Price: Webstone Flush Valve For Tankless Water Heater

Webstone Flush Valve For Tankless Water Heater
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The Webstone Flush Valve For Tankless Water Heater is satisfactory and appropriate and fits well with your daily purpose. The webstone flush valve fortankless water heater is powerful and it works great. Hot and cold set of full port forged brass ball valves with hi-flow hose drains and pressure relief valve outlet. Also, it is designed for a great price, is very happy and it is stainless.

Most importantly, the webstone flush valve for tankless water heater is worth the price, It is great with great quality and has a water heater design.

Most buyers opine that the valve will save a lot of time when servicing the unit. Moreover, a few strongly agree that the valve has taken time to order the item elsewhere. Also, a few also found the entire valve, removed the rubber gasket, and valve handle.

Top Customer Quotes:
  • The kit includes a residential pressure relief valve (150 psi/200,000 btu).
  • 304 stainless steel wing handle for easy actuation of the main ball.
  • This worked perfectly, is very nice, it read the instructions and has a good quality design.
  • This will work fine with the rinnai tankless heater.

Best For Customer Service: Vav Flush Valve For Tankless Water Heater

Vav Flush Valve For Tankless Water Heater
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The Vav Flush Valve For Tankless Water Heater is suitable and reliable and fits well with your daily use. The vav flush valve for tankless water heater is made from heavy duty and lead free solid brass which meets the lead free requirements of federal and state and is manufactured in an iso 9001 accredited facility. The handle will not hit the wall behind the water heater when the valve is opened and closed. This complete kit is made from lead free heavy duty brass for years of usage. The one - piece forged brass body effectively prevents leakage or dripping.

The valve is made in standard sizes and has a water heater design. And, the valve is great for customer service and has a superior integrated design. Finally, the vav flush valve for tankless water heater.

Why We Like This:
  • A pressure relief valve is included for connection to the hot valve.
  • Delivers what they promise.