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Products > Flush Kit for Sediment
Control With 4-Inch Pipe Nipple

Pictures of a curved dip tube overview and closeup, and a ball-valve drain assembly


  • curved dip tube with 4-inch pipe nipple custom-bent to fit your tank
  • lead-free, full-port ball-valve drain assembly with cap
  • pipe thread seal tape
  • instructions
  • service sticker

Fits all residential water heaters with 3/4-inch plumbing. Heaters of 75 gallons and greater often have bigger plumbing.

This is one of the places waterheaterrescue.com shines. We make curved dip tubes ourselves, to fit your tank, and nobody else offers them that way!

IMPORTANT! If you have an electric water heater made after April 2015 by A.O. Smith, Lochinvar, State, Kenmore, Reliance, American, Maytag or Whirlpool; or any Rheem, Ruud, Richmond, or GE made after that date, let us know, as you'll need a dip tube with a longer pipe nipple.

Click here to learn how to read the label to know when a water heater was made.


  • It controls sediment buildup that can harm the tank bottom, bury lower electric elements and burn them out, and that makes noise.
  • The dip tube and drain assembly control sediment buildup by forcing water and sediment to swirl around the bottom of the tank and out.
  • The ball valve has a relatively large-diameter opening and a straight path, which make it harder for big sediment chunks to clog it, and easier to clear it if they do.
  • The cap keeps the unwary from flooding the water heater space by accidentally opening the ball valve.
  • The sticker will help you remember when you installed the parts.


  • pipe wrench
  • adjustable pliers
  • drill with 7/8-inch hole saw
  • basin wrench
  • hammer and flat-bladed screwdriver

For further details, check out the Tools page.



The shopping cart generates an invoice and response, but we will give you delivery date and tracking information within a few days of your order by e-mail. We try to ship within one business day. If there is any hitch, we'll let you know immediately. If you hear nothing, consult your e-mail junk file. It's not uncommon for spam blockers to reroute our e-mails.


The products offered here are designed to make water heaters last longer, or solve specific problems. Installation is potentially do-it-yourself, but if you have the least doubt about your abilities, we suggest that you obtain expert help.

Remember also that if you have difficulties with installation, odds are that a professional or handyman will know a way to do it.

Shipping is by UPS within the contiguous United States. UPS does not deliver to post boxes. Allow up to about a week for delivery. Canada, Hawaii and Alaska are only served by Priority Mail and can use a post box.


Measure your water heater from the top to the drain valve and send the measurement to us at mail@waterheaterrescue.com. There are a few tanks that are shorter than average that require a shorter curved dip tube.


Merchandise in original condition can usually be returned within 120 days for a full refund of the purchase price, not including shipping. E-mail mail@waterheaterrescue.com for instructions and authorization.


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