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21st Century Sprinkler Irrigation Technology


With full control over each and every sprinkler

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              Water Conservation SPRINKLERS & PARTS  -  Our only business 

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Residential Customers 

(855) 413-4976

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Click here to Buy

Residential           Customers 

(855) 413-4976

Click here to Buy

Industry              Customers

(866) 200-8590

In-Stem Flow Regulation Powered by       

Means Smart Water Saving Sprinklers ----

The  World's  Most  Efficient  Sprinkler Parts
with Proven Water Savings of 30% - 60% 

Click here to go to Test Data tab and see for yourself 

In-stem Flow Regulation (IFR) - the most significant change to sprinklers in 50 years:

  Providing On-Off control at each sprinkler head

Check out all these LittleValve Benefits:

  • No more overspraying onto adjacent sidewalks, streets and buildings -  Dial in your distance.

  • Use only 15 foot 'Spray' nozzles and eliminate all 5', 8', 10' and 12' nozzles.  IFRs can reduce the radius of 15' nozzles down to 6 feet with bigger, fatter, heavier droplets that resist wind drift and penetrate the ground better.

  • Quadruples the range of Toro's Precision Rotating Nozzle by taking radius down to 18 inches.  Triples the range of Rain Bird's 17-24 rotary nozzle by taking its radius down to 5 feet.

  • Toro and Rain Bird's Flat' spray nozzles become the world's best Micro-Sprays down to 2 feet. 

  • Bring side strips down to 3' - 4' left/right.  Turn Hunter's SS530 side strip nozzle into a micro-spray, as well. 

  • Just about every 'adjustable' nozzle can be turned into a micro-spray. 

  • Never touch the little screw on top of spray or rotating nozzles.
  • Easily controls the distance range of any above-grade gear-driven rotor all the way down to 'OFF' without touching the diffusion screw.

  • Eliminate pressure regulation and pressure-compensating devices -  they are never needed. LittleValves override ALL high pressure.

  • Eliminate wasteful misting/fogging with its huge water loss. 
  • Now you can have above-grade 'Drip' systems with our new Micro-stream drip caps.

See the difference between sprinklers with IFRs vs those without  by clicking here for shortcut to "Water Saving Sprinklers Parts"  

  • And best of all, with individual On/Off control at each sprinkler, you save hours of time and labor by eliminating all trips back and forth to the valve or controller just to service clogged sprinklers or exchange nozzles. 

Originally developed to make sprinkler maintenance easier and faster. Pictured below is a pop-up sprinkler being flushed by just one person without helpers and without going back and forth to the controller or valve. 

During the process you see in the photo below, the pop-up stem will never retract until you shut off the water to the system.   

After flushing, shut off flow exiting the extended pop-up stem by turning the little key clockwise.  Insert filter, re-attach the nozzle. Then turn the key counter-clockwise until desired amount of water exits nozzle to the precise distance you want.  Pull out the key and you're done. 


 CAUTION: You  WILL  get spoiled using LittleValve parts.


 Little Tuffy 
Pop-up Sprinkler Info 

LittleValve Demo Video 

World's Best Sprinkler

LittleValve/Precision Rotating  Nozzle - PRN/LV Combo 
 10 pages of Videos and Pictures 

Flushing Cross Demo Video

In commercial installations, PRNs, PSNs, Little Tuffys and LittleValve parts are
      all rebatable under 
the Southern California Metropolitan Water District program.    

 Looking for water conserving sprinkler systems that save
money, water and labor, then come to

· · · · · ·   Valvette systems.

You can shop here if you choose - just pick your category by clicking on it:




TOOLS  and



Valvette Systems Presents

PRN/LittleValve Combo 

The Best Sprinkler On The Market Today

        Featuring Toro's®     Precision Rotating Nozzle

Valvette Systems' Patented     In-Stem Flow Regulation

        Little Tuffys or other LittleValve parts combined with Toro's            PRN -  is the premier sprinkler on the planet  

Distance Range: 26 - 28 feet down to 18 inches

Arc range: 45° - 270°  


     Click here to go directly to the PRN/LittleValve Comparisons to see the vast differences between

the PRN/LittleValve Combo

 and the major competition. 

LittleValves make every nozzle on the market work better but allow Toro's Precision Rotating Nozzle (PRN) to do things that no other nozzle can do.  In fact, PRNs with LittleValve parts can replace every nozzle in your landscape except for side, corner and center strips, (the nozzles  
used in long, narrow planter areas.)

The flexibility, efficiency and water savings of Toro's PRN when joined with Little Tuffys and  LittleValve sprinkler parts is best described in the videos plus the pictures you'll see in the 10 sub-pages by clicking here:  PRN/LittleValve Combo.  

    ACCOMPLISHING THE IMPOSSIBLE WITH COMMERCIAL                                                                                         & RESIDENTIAL SPRINKLERS

              The ultimate in high-efficiency irrigation.  No other sprinkler is comparable