Kinetic water ram kit (C) Daniel Friedman How to Use a Kinetic Water Ram to Un-Clog a Blocked Drain: Step by Step Guide for Homeowners

  • KINETIC WATER RAM - CONTENTS: How to un-clog a blocked drain yourself using a pneumatic drain cleaner like the Kinetic Water Ram, & when to give up call a plumber. Photo guide to using a kinetic water ram or air jet to clear blocked drains - tips from a pro. Special tips for un-clogging a blocked bathtub drain or double-sink drain
  • POST a QUESTION or READ FAQs about unblocking clogged drains using a kinetic water ram tool

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Clogged building drain repair using a kinetic water ram or pneumatic drain cleaner: this article explains step by step how to use our favorite drain de-clogger: a kinetic water ram pneumatic tool (rent or buy) to un-block a clogged drain.

When a building drain is clogged or slow, or when there is a septic system backup, it's important to determine where the problem lies, since the repair steps can be quite different and costs can vary widely.

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Guide to Using a Kinetic Water Ram™ to Open Blocked Building Drains

Kinetic Water Ram (C) Kinetic Water Ram

How to use a kinetic water ram to clear a blocked drain: a kinetic water ram can be effective in clearing blocked drains and can be rented from your local "rent-all" store.

A "Kinetic Water Ram™" [link to buy at] pump uses compressed air to clear clogged building drains is also available. After renting a kinetic water ram drain cleaning tool to clear clogged drains several times we bought one and used it for many years.

We were impressed with the quality and strength of our kinetic water ram drain cleaner. A simple mechanical pump compresses air in a cylinder. A rubber fitting is attached to an outlet end of the cylinder and held in place over a clogged drain. When the pump's trigger is pulled the ram releases its air in a bang that tries to blow loose obstructions in drain pipes.

The kinetic water ram drain clearing device can unblock some types of clogged drains even when the clog is distant provided you can assure that the drainpipe is full of water when the equipment is used.

We rented and eventually purchased this sine-qua-non of mechanical drain openers, the Kinetic Water Ram™ [available to buy on] - a pump device that will usually blow-out clogs, even remote clogs, in building drains. The Kinetic Water Ram includes a stainless steel air pump and rubber fittings that match the business end of the ram to a building sink, tub, toilet, or other drain.

Kinetic water ram kit (C) Daniel Friedman Kinetic water ram kit (C) Daniel Friedman

Our kinetic water ram kit came in a steel orange box that included a collection of rubber fittings to let us use the tool with almost any drain opening size or shape.

A few of these fittings are shown in our photos above. We have jammed our pony pump and washing machine hoses into this same carrier case but those have nothing to do with using a kinetic water ram to clear a drain. They just spend time together.

Steps in Using the Kinetic Water Ram to Clear a Blocked Drain

You can rent a Kinetic Water Ram at many consumer rental centers. To use the Kinetic Water Ram effectively you may need to

Inspect to be sure that the plumbing trap for the fixture is secure and not corroded so you won't blow it off of the fixture.

  • Put a plastic bucket or trash can under the trap just in case. (Photo below left)
  • Run water in the fixture with the slow or blocked drain to fill up the drain pipe. If the drain is slow but not fully blocked we keep water running. The water ram is less effective or not effective at all if there is too much air in the drain pipe, as it is relying on pushing a column of water against the drain obstruction.
Kinetic water ram kit (C) Daniel Friedman Kinetic water ram kit (C) Daniel Friedman
  • Wet a rag to hold over the fixture vent if there is a vent. On bath tubs some plumbers remove the tub overflow cover and manually stuff a rag into the vent opening. Closing off the fixture vent helps deliver the maximum impact to the
  • Pump up the water ram (start under 20 psi) and hold it over the drain opening; press the rubber fitting on the end of the water ram into the drain opening. (Photo below left).
  • Pull the trigger. Wham! a blast of air impacts the column of water in the slow or clogged drain, pushing free an obstruction in as few as one shot. Recently when we called our plumber to un-clog a building drain he arrived with just this same tool in hand. For building drains he no longer uses a wire or plumbing snake.
Kinetic water ram kit (C) Daniel Friedman Kinetic water ram kit (C) Daniel Friedman
  • Our last drain de-clog photo (below) shows that the sink is running free. We let the water run for a good 10 minutes longer to be sure we have flushed the blown-drain blocking material out through the building drain and sewer piping.
Kinetic water ram kit (C) Daniel Friedman

Our successful bathroom sink drain de-clog photo (below) shows that the sink is running free.

One quick shot at about 20 psi was sufficient. You can see the 20 psi shown on the water ram's pressure gauge, above-right.

We let the water run for a good 10 minutes longer to be sure we have flushed the blown-drain blocking material out through the building drain and sewer piping.

When deciding how much air pressure to pump-to we recommend starting gently, and never use higher air pressure than is needed to clear the drain. Below you'll read why this we give this advice.

Special Tips for Using a Kinetic Water Ram on a Bath Tub with an Overflow Drain

Kinetic water ram kit (C) Daniel Friedman

In this particular bathroom, because we were clearing a drain in a slow sink that was close to the bath tub and toilet, we figured that all of the fixture drains probably joined close by before descending in a common larger drain pipe to the building basement.

So we also ran the nearby tub water to help fill the nearby sluggish drain line as well as to keep the water ram's air charge from backing up backwards out of the tub drain instead of forcing the blockage through to the larger main drain line.

Since the tub drain was a bit slow too, after clearing the sink drain we gave the tub a few air shots to speed up that drain flow as well.

Block the bath tub overflow drain opening before firing the kinetic water ram

We had to hold a wet towel over the tub overflow / vent for this to work, and usually this approach is adequate even if we have to fire the water ram a couple of times.

Some plumbers actually remove the tub overflow drain cover and pull out the tub drain stopper that often is found at this opening too. That will expose the opening of the actual stand pipe that connects the tub overflow drain to the lower drain line under the tub. Working through the opening in the tub itself the plumber stuffs a wet rag into the opening of the vertical overflow drain pipe before firing the kinetic water ram.

Don't Use Higher Pressure than Needed with a Kinetic Water Ram

Watch out: be careful not to pump your kinetic water ram drain opener to a pressure higher than necessary. You can get quite a splash in the face when you fire off the ram if you're not careful.

Worse, in our dentist's office where a chronic clogged drain was later traced to mineral and rust-blocked galvanized drain piping, not only was the kinetic water ram drain clearer useless, in our enthusiasm we blew the trap right off of her bathroom sink. An elated moment of "we fixed the blockage" was followed by an "Oh S***" as the sink full of nasty water flowed out of the vanity base and across the floor of the dental office bathroom.

Keep in mind that the Kinetic Water Ram, nor any other product, plumbing snake, etc. is going to be effective if the cause of your slow or blocked drain is mineral or other hard build-up has lined the drain pipe interior.

How to Use a Kinetic Water Ram in a Double Sink or at a Bath Tub with an Overflow

Reader question: how do I use a kinetic water ram to clear a drain at a double sink? Water just geysers up from the second drain opening when I fire the water ram.

Very helpful and detailed information regarding clogged drains. I plan to rent the Kinetic Water Ram (if Home Depot carries it)you tried out successfully but one issue that was not mentioned in your report. I have the double sink in the kitchen and live alone. I have not been able to successfully plug the 2nd sink drain so I can get full pressure when plunging. Using a plunger, the water keeps coming up the 2nd drain no matter how much weight I put on the plug. The water pressure keeps forcing it to unplug

Any suggestions? Thank you in advance for your suggestions and quality information. - Lori

Reply: tips for plugging the second sink drain opening in a double sink when de-clogging a drain

You can rent a Kinetic Water Ram at typical tool rental centers and perhaps at some Home Depot stores.

Use an adjustable rubber sink drain opening plug: If the water ram tool set is complete, it includes a set of adjustable rubber plugs that can be used to plug nearby drain openings. These plugs work by using a pair of metal washers on the plug top and bottom and a wing nut. Insert the rubber plug into the drain opening of the higher of the two double sinks and tighten the wing nut to snug the plug in the opening.

If your kinetic water ram does not include a rubber plug that will fit and seal the second sink drain in your double sink, such plugs can be purchased at a plumbing supply store.

Then you can run water into the lower sink and fire the kinetic water ram to unblock the drain clog. You might want an assistant to help out by continually pressing down on this second drain plug when you fire the kinetic water ram declogger.

Try a wet rag as a drain plug: But before buying the rubber drain plug try having an assistant simply ball up a wet cloth and using their fist, lean down on the cloth in the second sink drain opening while you place water in the clogged sink and fire the kinetic water ram. Watch out to hold the wet rag plug tightly, and don't try this operation while wearing dress clothes.

Watch out: for getting splashed (or splashing your assistant) when you fire the water ram. If you are not holding the water ramp and its end-fitting snugly into the drain opening, or if your accomplice is not holding the wet rag snugly in the second drain opening of the double sink, you both may be wet by splash-back. That's what happened to me the first time I tried using this tool.

Watch out: A splash-back from a clogged drain can be more than messy. If someone has previously tried pouring a drain de-clogging chemical down the drain, being splashed, especially in the face and eyes, with a chemical could be very dangerous.

A Quick Summary of Better Ways to Unclog Slow or Clogged Building or Fixture Drains

  • Strainers & Stoppers: Try removing the sink strainer and stopper to see if you can pull out clogs of hair or debris from above
  • Traps: If the sink or tub trap is accessible and in good condition you may be able to disassemble it over a bucket (to catch water and debris) and clean and reinstall the trap. If the trap is corroded or flimsy you may want to leave this task to a professional plumber. See Plumbing Trap Clog Repair.
  • Toilet Plungers: Try a toilet plunger, and don't be afraid to use it repeatedly for five or ten minutes. We've had great success with this simple tool. See Toilet Plunger Method. Slow flushing toilets that are not totally blocked may be due to
    • improper original toilet installation of drain/waste/vent piping, such as locating the toilet too far from the plumbing vent stack or failure to provide a plumbing vent at all
    • a clogged or partly clogged building drain
    • a clogged or partly clogged plumbing vent
    • inadequate water quantity in the toilet tank or a problem with the toilet flapper valve or fill valve, giving too small a water charge to adequately flush the toilet.
    • See TOILET REPAIR GUIDE for how to diagnose and repair toilet flush, fill, noise, drain, odor, sound, running problems of all kinds. And at Toilet Drain Clogged we describe using a toilet plunger to clear a blocked toilet drain.
  • Try a KINETIC WATER RAM (photo and discussion of the Kinetic Water Ram is in the article just above)
  • Drain de-clog chemicals: can work, but some drain cleaners use caustic chemicals risk contaminating the environment, your drainfield, well, especially if used to excess or frequently. Worse, if your drain is fully blocked the plumber won't be happy facing the dangerous task of taking apart a drain loaded with a caustic chemical. See Drain Cleaner Chemicals.
  • Drain Snakes: We have given up on using little do-it-yourself wires and snakes and augers in drains, but sometimes these work just fine, and of course the purchase price of a little drain snake is less than the Kinetic Water Ram.
    See Plumbing Snake Drain De-Clog.
  • Hire a Plumber: If there is a clog in a main building drain between a building and sewer or septic system, it may be necessary to rent or have your plumber use a power snake - a rotary auger that can dig out roots and other clogs. But beware: if roots are clogging your drain pipe this is only a temporary fix as they will reappear in months to a year.

This article is a section of CLOGGED DRAIN DIAGNOSIS & REPAIR, our complete article that explains explains how to investigate slow or blocked drains and septic system backups to distinguish between a probable septic system failure versus a probable blocked building drain.


Continue reading at CLOGGED DRAIN DIAGNOSIS & REPAIR or select a topic from the More Reading links shown below.

You can buy a Kinetic Water Ram [link to purchase online] but you can also rent one at many tool rental centers.

Or see BLOCKED DRAIN REPAIR METHODS where we discuss traditional blocked or slow plumbing drain methods: taking apart the plumbing trap, using a drain cleaner chemical, using a toilet plunger (old faithful works pretty well), and using a plumbing snake (sometimes).

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KINETIC WATER RAM at - online encyclopedia of building & environmental inspection, testing, diagnosis, repair, & problem prevention advice.

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