BucketDescaler Parts & Accessories

BucketDescaler Expansion Valve Kit

BucketDescaler Expansion Valve Kit

BucketDescaler Expansion Valve Kit

Make bigger jobs seem small.

The BucketDescaler expansion valve kit supersizes your bucketdescaler by allowing you to draw more volume into the system. Use it to draw more descaler or makeup water to descale larger heat exchangers, hot water tanks, boilers and more.

  • Installs quickly and easily.
  • Increases the volume of descaler and water for bigger jobs.
  • Made from acid proof fittings.


SKU: SC-DS-5-VLV-KIT Categories: ,


Sometimes you just need a little extra oomph to get the job done right. The BucketDescaler expansion valve kit can get you there. It installs quickly and allows you to draw more descaler or makeup water from another source, like a tap or other pump. This means that when you need more than the 4 gallons of water that the base unit holds, just hook up the valve and draw more in.


  • When you need to descale larger vessels.
  • Water heaters, boilers, heat exchangers, etc.
  • Draw more descaler and/or water into the system.


  • Acid proof hoses and fittings.
  • Quick installation.
  • Includes 4ft hose to connect to other water/descaler source.


“Having the expansion valve handy means I can say yes to larger jobs without worrying about it.” – Tim R. CT.


Nothing you wouldn’t have already. the BucketDescaler has the hole already molded into its top so that just needs to get punched out. Then using some chanel lock pliers, it can easily be added.
That’s really up to the vessel and heat exchangers you are descaling. If its a small water heater you may not need an expansion valve as you are only trying to cover heater elements. If its a shell and tube heat exchanger, you may need an addtional 10-15 gallons.
Aaah. The hundred dollar question. The BucketDescaler has a window on the top of it where you could add additional liquid. But it’s messy and could cause unsafe conditions with spilled descaler. Trust us, it’s a lot easier to add it through the expansion valve. your choice, but we would recommend the expansion valve for ease of use and safety. .


Additional information




2 lbs


Valve Kit Installation Instructions