Loading... Please wait...


Introducing The Flow-Aide System Descaler Kit And 3/4inch Service Valve Kit


Introducing The Flow-Aide System Descaler Kit And 3/4inch Service Valve Kit


Cleaning your tankless water heater is now easier than ever before, with the new Flow-Aide System Descaler Kit. Using this descaler kit along with our 3/4 Inch Tankless Water Heater Service Valve Kit,  there is no longer any need to disconnect your plumbing from your water heater when descaling is needed, saving you time and inconvenience.Our 3/4 Inch Service Valve Kit allow for easy regular maitenance, as well as easy diagnostic testing.

The Flow-Aide System Descaler Kit includes: One 3.5 gallon bucket, one 500 GPH pump, two 5 foot rubber hoses, and one quart of flow-aide cleaning solution. 

Our Eccotemp 3/4 inch Tankless Water Heater Service Valve Kit includes: Set of 2 heavy duty forged brass ball valves, a full port main flow channel, large drain port outlets, color-coded aluminum handles, and uniquely designed lever/wing handle. 

Please continue below on how to install your 3/4 Inch Tankless Water Heater Service Valve Kit:

1. Wrap the ends of the threaded water inlet & outlet on the tankless water heater,
as well as the threaded end of the approved pressure relief valve (enclosed) with
a minimum of 5 wraps of PTFE thread tape or another approved thread sealant.

2. Screw the pressure relief valve into the 3/4" threads opposite the wing handle on
the HOT water service valve. (RED drain handle)
(see Pressure Relief Valve Section for proper installation requirements)

3. Loosen the 3/4" union nut on the HOT water valve and connect to the HOT
water outlet on the tankless water heater. If nut is removed, ensure that you
realign the tailpiece accurately to the valve and that the black washer is

positioned such that the raised metal edge of the valve is inside the washer.

4. Align the direction of the HOT water drain to the desired position.

5. Tighten the union assembly to the HOT water valve using approximately 15 foot lbs of torque.

6. Repeat steps 3-5 for the COLD water valve. (BLUE drain handle) for
connection to the COLD water inlet on the tankless water heater.

7. Connect the INLET on the COLD water valve to the
MAIN SOURCE of the water supply.

8. Connect the OUTLET on the HOT water valve to
the HOT WATER plumbing system.

9. Ensure that both drain valve lever handles are in the closed
position (perpendicular to the drain portion of the body).

***For proper care of this approved pressure relief valve, it is recommended
that the valve is manually operated once a year. In doing so, it will be
necessary to take precautions with regard to the discharge of potentially
scalding hot water under pressure. Ensure discharge has a place to fl ow.
Contact with your body or other property may cause damage or harm.***

Please see below on how to descale your tankless water heater, using the 3/4 Inch Tankless Water Heater Service Valve Kit:

1. Disconnect power to water heater.

2. Close hot and cold isolation and service valves and remove service caps.

3. Pour 1.25 gallons of water into bucket and place under water heater.

4. Add contents of 1 quart bottle of Whitlam Flow-Aide into bucket (Bucket should be filled approximately 1/2 full).

The higher the concentration the faster the system will be cleaned. Minimum dilutions is 1 part water to 1 part Flow-Aide. Be sure to have enough solution to keep the pump submersed when in use.

5. Connect one hose to pump, and other end of same hose to cold service valve. Place pump in bucket.

6. Connect second hose to hot service valve. Place other end in bucket.

7. Open both hot and cold service valves.

8. Plug pump into grounded receptacle.

9. Allow pump to circulate Whitlam Flow-Aide solution through heater for 30-45 minutes. Unplug pump.

10. Close cold service valve. Remove hose from cold service valve, and replace service cap.

11. Disconnect the hose from the pump and remove pump from bucket. Discard Whitlam Flow-Aide solution.

12. Flush tankless water heater for 3-5 minutes or until water flows clear by opening the cold isolation valve and allowing water to exit through the hot service valve into a drain or bucket. If using a bucket, empty periodically.

13. Close hot service valve. Remove hose from service valve and replace service cap.

14. Open hot isolation valve.

15. Connect power to water heater and return appliance to service.

For further information and availability, please follow the links below:



View Comments

Introducing Our New 45 Model Tankless Water Heaters!

                                                                                                Our new 45H and 45 HI Tankless Water Heaters are the largest gas-operated, whole-house models to date, making them ideal for your standard 4 bedroom, 2 bathroom home. The 45 models are rated at 6.8 gallons [...]

Read More »

When and Where To Install A Mini Tank Water Heater

                An Under the counter water heater is a small appliance for instant water heating at home or office, at the point of service. Also known as instant water heaters for sink, they can save you lots of water, energy and cash when properly installed and used. The appliance is usually installed in kitchen sections or bathroom, under the sink or counter, for [...]

Read More »

The Eccotemp L5 Portable Tankless Water Heater

                                                                                                                    Our L5 Portable Tankless Water Heater is the original, and best-selling portable water heater on the market to date. With the L5, you instant, endless hot water wherever you are. This model is ideal for use at campsites,hunting lodges, emergency applications, cabins, or even around the house. The [...]

Read More »

Routine Maintenance On Your Tankless Water Heater

In order to get the most out of your tankless water heater, it is very important to perform routine maintenance on your unit from time to time. Examine the area around the heater for any combustible materials such as paper, or chemicals. Be sure to clear away any such materials you find. Regularly check the [...]

Read More »

The Importance Of Installing A Pressure Relief Valve Before Your Tankless Water Heater

Installing a pressure relief valve (PRV) before your tankless water heater is not only required in some regions depending on where you live, but is also a very important safety feature. Always be sure that your tankless water heater is able to relieve both the water temperature and pressure at a given point in [...]

Read More »

Electric Tankless Water Heaters Installation Requirements

Installation Requirements For Our ET-32, EP-7.0, and EP-2.4: Before installing your electric tankless water heater, it is very important to be sure that you have the correct amount of amps, breakers, and wire size not only for these units to function properly, but more importantly, for your safety. Before mounting any of these units, be sure [...]

Read More »

Using Our Point-Of-Use Water Heaters As A Booster To Your Conventional Storage Tank

Our Electric Water Heaters models EP-2.4, EP-7.0, EM-2.5, and EM-4.0 can be ran in line with a conventional tank heater in order to give you hot water at a point of use application, as the tankless or mini electric water heater would act as a booster within this type of set-up. Due to their small size,these [...]

Read More »

L10 and FVI12-Which Model Is Best For Your Tiny Home?

Our L10 and FVI12 tankless water heaters are best fitted for a small residence such as RV's and cabins, as well as tiny homes. Both of these units are rated at 74,000 BTUs and would work for overall the same applications. Tiny house owners sacrifice square footage for free living, preferring homes less than 1000 square [...]

Read More »

EP-2.4 Point-Of-Use Tankless Water Heater In Detail

The Eccotemp EP-2.4 point-of-use tankless water heater is specifically designed to shorten the distance and reduce the wait time for hot water at a single faucet. The patented mixing chamber provides a ready supply of heated water, virtually immediately and the mixing exchanger eliminates the potential for scalding. The EP-2.4 point-of-use tankless water heater is designed [...]

Read More »