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Thread: 5 Gpm vs. 8 Gpm injectors

  1. #71
    Quote Originally Posted by dave mac View Post
    here is the video on the long distance remote I use

    https://www.youtube.com/watch?v=_a2J6Bg8vp8
    Dave, how far have you used it from the rig?

    Any problems with the signal going through houses, trees or vehicles?

    What is your opinion of the quality, do you think it will last a while in commercial work?

    Thanks.

  2. #72
    I got two seasons out of it doing residential, then the it stopped working, 400 feet through houses I would estimate that I have used it. Quality is pretty good and price is great.

  3. #73

  4. #74
    Super Helper Member
    Join Date
    Oct 2008
    Location
    New Albany, Ms
    Posts
    1,161
    It is very simple why an 8 GPM won't downstream as strong as a 4gpm machine. Although you can make an 8 perform ok if you optimize the sytem. The injector works on the differential of pressure. High pressure up to the injector and lower pressure below the injector. With a 3/8 hose flowing 8gpm the downstream side of the injector is carrying so much water it just can't drop the pressure as much. A 1/2 inch hose would be great but man those will tire you out fast. Some use 150 feet of 1/2 inch and just put 50 feet of 3/8 on the tail. But I run 200 ft of 3/8 and draw plenty soap. Heck I use household bleach mostly and can still cut it with 1/3 or more water and clean effectively. Be sure to use at least a 12gpm rated trigger gun and use the 2.1mm size Chem injector rated 3-5gpm. It restricts the flow a lot but still works good. Now I've started using the Suttner st61 injector which has a bypass gate to open flow up for rinsing. It doesn't pull as strong as a fixed injector but it still is strong enough.
    Grime Reaper Power Clean & Soft Wash
    Serving North Mississippi
    662-316-7685
    http://grimereaperwashing.tumblr.com

  5. #75
    Quote Originally Posted by Pat Norman View Post
    It is very simple why an 8 GPM won't downstream as strong as a 4gpm machine. Although you can make an 8 perform ok if you optimize the sytem. The injector works on the differential of pressure. High pressure up to the injector and lower pressure below the injector. With a 3/8 hose flowing 8gpm the downstream side of the injector is carrying so much water it just can't drop the pressure as much. A 1/2 inch hose would be great but man those will tire you out fast. Some use 150 feet of 1/2 inch and just put 50 feet of 3/8 on the tail. But I run 200 ft of 3/8 and draw plenty soap. Heck I use household bleach mostly and can still cut it with 1/3 or more water and clean effectively. Be sure to use at least a 12gpm rated trigger gun and use the 2.1mm size Chem injector rated 3-5gpm. It restricts the flow a lot but still works good. Now I've started using the Suttner st61 injector which has a bypass gate to open flow up for rinsing. It doesn't pull as strong as a fixed injector but it still is strong enough.
    Good information.
    Alabama Pro Wash
    Tuscaloosa,Alabama
    http://www.roofcleaningalabama.com/
    205-799-9069
    EMAIL: andy@alabamaprowash.com
    http://youtu.be/kyqjMWcA1hg

  6. #76
    Super Helper Member
    Join Date
    Oct 2008
    Location
    New Albany, Ms
    Posts
    1,161
    Thanks William for sharing that remote idea and thanks Dave for sharing the bypass gadget. I've thought too about building something like that with the injector in the "loop" and with qc's for the injector.
    Grime Reaper Power Clean & Soft Wash
    Serving North Mississippi
    662-316-7685
    http://grimereaperwashing.tumblr.com

  7. #77
    Quote Originally Posted by Pat Norman View Post
    Thanks William for sharing that remote idea and thanks Dave for sharing the bypass gadget. I've thought too about building something like that with the injector in the "loop" and with qc's for the injector.
    i think your gonna fire up William again... If I recall... He was quite poignant about someone shoe posted a pic of one...
    Matt Goin
    President
    Grass Butler Lawn Maintenance
    Wash Butler Pressure Washing
    www.grassbutler.com
    www.washbutler.com

  8. #78
    I'm to tired to care. If it works for you great. Just ready to get back to NC
    William
    Chuck Norris can believe it's not butter.

  9. #79
    Quote Originally Posted by offdutyfireman View Post
    I'm to tired to care. If it works for you great. Just ready to get back to NC
    Ohhh. ill go find the post...and put it up.....geez
    Matt Goin
    President
    Grass Butler Lawn Maintenance
    Wash Butler Pressure Washing
    www.grassbutler.com
    www.washbutler.com

  10. #80
    Well I searched for 10 minutes..... found it......... its at the beginning of this same damn post!!

    http://www.ptstate.com/forums/showth...njectors/page2
    Matt Goin
    President
    Grass Butler Lawn Maintenance
    Wash Butler Pressure Washing
    www.grassbutler.com
    www.washbutler.com

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