January 23, 2015

How to clean a water softener nozzle and venturi

By Sears PartsDirect staff
How to clean a water softener nozzle and venturi.

The nozzle and venturi in a water softener draw the brine into the resin bed during the regeneration cycle. If they become clogged with silt or dirt, the water softener stops working. You can remove and clean the nozzle. Before you do, make sure the water softener is in service mode—not regeneration mode. Check your owner’s manual for more directions specific to your water softener model.

  1. Remove the softener top cover.

  2. Unscrew the cap from the nozzle and venturi housing, being careful with the large O-ring seal.

  3. Lift out the screen support and screen, then the nozzle and venturi.

  4. Wash the parts in clean warm water, using a small brush or toothpick to remove debris.

  5. Clean the gasket, small screen, and flow plugs as well.

When reassembling the nozzle and venturi, it is important to reinstall the flow plugs with the numbers printed on them facing up. Carefully replace the parts in exact order in which you removed them.

Before reinstalling the large O-ring seal, lightly lubricate it with silicone grease or petroleum jelly. Hand-tighten the cap only; don’t over-tighten it.

Symptoms for water softeners

Choose a symptom to see related water softener repairs.

Main causes: broken resin tank screen, bad resin tank seals, cracked upper distributor in resin tank
Main causes: faulty brine valve assembly, bad rotor valve
Main causes: clogged drain hose, faulty rotor valve, leaky rotor valve seals
Main causes: lack of electrical power, bad power transformer, faulty timer
Main causes: loose water line connections, cracked water-carrying components, bad rotor valve seals
Main causes: empty salt tank, salt bridge, depleted resin, clogged or damaged venturi, broken rotor position switch, failed timer
Main causes: salt bridge inside the salt tank, bad timer, valve motor failure, faulty rotor valve, clogged venturi
Main causes: broken water flow meter, faulty timer, water flow to softener is bypassed
Repair guides for water softeners

These step-by-step repair guides will help you safely fix what’s broken on your water softener.

How to replace a water softener rotor position switch

The rotor position switch detects the position of the valve rotor. If the rotor position switch fails, follow these steps to replace it in about half an hour.

Repair difficulty
Time required
 30 minutes or less
January 1, 2015
By Lyle Weischwill
How to replace a water softener venturi

The venturi draws brine water from the salt tank to the resin tank for regeneration. Follow these steps to replace a damaged venturi.

Repair difficulty
Time required
 15 minutes or less
January 1, 2015
By Lyle Weischwill
How to replace a water softener valve motor

The valve motor rotates the valve rotor to operate the water softener. If the valve motor fails, follow these steps to replace the valve motor.

Repair difficulty
Time required
 30 minutes or less
Articles and videos for water softeners

Use the advice and tips in these articles and videos to get the most out of your water softener.

February 1, 2018
How to read a wiring schematic video
By Sears PartsDirect staff

Learn how to decipher symbols so you can buy the right part for your problem.

January 20, 2015
Water softener common questions
By Sears PartsDirect staff

Find answers to some of the most commonly asked questions about water softener repairs.

January 20, 2015
How a water softener works
By Sears PartsDirect staff

Learn how a water softener works to provide your home with soft water.