downstream injector installation questions

Christopher

Christopher

Moderator
Hello Everyone,
I am getting ready to install my downstream injector I purchased last week. I was looking at it and the passage through it is very small. I am thinking that this will cause some back pressure for the pump if it runs all the time. Does everyone install this before the hosereel or just before the gun or after the gun? I am thinking that maybe I need to put in a "T" so I can by-pass it when I am not injecting chemicals. Does anyone have any pictures to share so I install it correctly? Thanks for any help.

Chris Chappell
Superior Power Washing
Corpus Christi, Texas 78415
361-853-2513
chris969@swbell.net
 
As long as your hose reel is not too restrictive, you can mount the injector on the outlet of the pressure washer. It will create a certain amount of back pressure, but that is not a problem. If you want to eliminate the injector during periods of non use, attach it with quick couplers so you can take it off when you want to.
 
If you attach it to the end of your gun you make a mini xjet.. I've got mine at my hose reel but I also use one on the end of my gun occasionally like an xjet.. I drilled the hole a bit bigger on it though.
 
Thanks for the info and help.
 
Never drill the hole larger it will ruin the injector. They are sized so they cause a venturi action when low pressure is present. A check valve stops the water from flowing back into your chemicals.
Mounting it before the hose reel or after makes no difference.
But, you can hook the Injector up the wrong way if you are not careful.
You don't want that then it will not work.
Look at the Injector body carefully there should be an arrow on the body. the arrow points to the direction of flow or the Gun.
 
Mine is mounted prior to the hose reel, no problems. I have found that the brass injectors just don't last (sometimes a few weeks, sometimes a few months) even if you replace the steel ball with a ceramic one. I have been using a (2.0) stainless steel injector for over a year and get excellent results.
 
I love Finding these Questions
Christopher said:
Hello Everyone,
I am getting ready to install my downstream injector I purchased last week. I was looking at it and the passage through it is very small. I am thinking that this will cause some back pressure for the pump if it runs all the time. Does everyone install this before the hosereel or just before the gun or after the gun? I am thinking that maybe I need to put in a "T" so I can by-pass it when I am not injecting chemicals. Does anyone have any pictures to share so I install it correctly? Thanks for any help.

Chris Chappell
Superior Power Washing
Corpus Christi, Texas 78415
361-853-2513
chris969@swbell.net
Click to expand...
 
That is an old thread! Wow.

It is amazing how when you get into the business and are learning everything you can, reading all the bbs's at the time (more then than there are now), reading all the threads you can find (reading for months and months before even starting the business and still reading older threads) and buying lots of cool looking gadgets that are not needed, hardly ever used and wish you would not have bought them but when you are new you just don't know.

Still using downstream injectors and maybe once a year or two I bring out the X-Jet for some different jobs, just prefer downstreaming, lots of ways to apply chemicals and it is just personal preference on how you do things.

Now on my hose reels, I don't have swivels (they wear out quickly), I have plugs and couplers on the hoses so I can drop hoses when moving the trailer instead of having to roll up the hose then unroll it several times during a job. I have 150', 200' and 300' on the hose reels.

I have the plug and coupler on the downstream injector so I can connect it from the jumper from the machine to the end of the hose that is sticking through the side of the hose reel.
 
Evolution
Christopher said:
That is an old thread! Wow.

It is amazing how when you get into the business and are learning everything you can, reading all the bbs's at the time (more then than there are now), reading all the threads you can find (reading for months and months before even starting the business and still reading older threads) and buying lots of cool looking gadgets that are not needed, hardly ever used and wish you would not have bought them but when you are new you just don't know.

Still using downstream injectors and maybe once a year or two I bring out the X-Jet for some different jobs, just prefer downstreaming, lots of ways to apply chemicals and it is just personal preference on how you do things.

Now on my hose reels, I don't have swivels (they wear out quickly), I have plugs and couplers on the hoses so I can drop hoses when moving the trailer instead of having to roll up the hose then unroll it several times during a job. I have 150', 200' and 300' on the hose reels.

I have the plug and coupler on the downstream injector so I can connect it from the jumper from the machine to the end of the hose that is sticking through the side of the hose reel.
Click to expand...
 
Chris, do the o-rings on your couplers last longer than the swivels did? I was very disappointed in how quickly my swivel gave out in one of my hose reels. Do you run the plug pump-side and the coupler gun-side or viceversa? anybody notice a difference on how you orient your quick-connects?
 
I put the plug as the outlet and the coupler as the inlet.

So, off the jumper from the machine is a plug, the hose on the hose reel has a coupler to connect to the jumper. The end of the hose that is on the reel that attaches to the gun, surface cleaner, project gun, ball valve, etc.... is a plug. I always use a ball valve on the end of the hose so I can switch from gun to surface cleaner to extendawand, etc..... much easier than shutting off the machine, removing pressure, disconnecting, connecting to another tool, turning machine back on, getting back to work.

The only swivel I have on a hose reel is the Super Swivel and that is on the water supply hose reel going to the water tank from the building.

When you look into the opening of just about all the brass swivels it is maybe 1/4" and that is not good for a water supply hose, when I switched over to the Hannay electric hose reel with the Super Swivel, the tank seemed to fill about twice as fast.

If you put the coupler the other way, when pulling hoses, if the coupler snags on a wall, or something else, it will pop apart, been there and done that when first starting business then switched everything around so that does not happen again.

The o-rings in the hoses last a long time, the o-rings on the wand where the nozzle connects seem to wear out quickly when using hot water. Ball valve o-rings seem to last a long time.
 
Down-Stream Chemical Injection..

Thanks for reminding me..
..I'm putting this in my Pressure Washer BulletProofing class..

There is NO better injector for down-streaming, than one with a variable venturi..
The ST-62 injector has a flow-controlling feature, that allows it to "live on" the system.
With the venturi wide-open, it is less restrictive than ANY other..
and when you are running longer-lengths of hose, this adjustable tool is less finicky.
..More reliable and better performance, and more convenient..
This is a cool tool.
Our service center has solved MANY a flow-restriction problem with these little gems.

..and I recommend mounting at the inlet of the hose reel to get it past as much plumbing as possible..
everything in the system is a "Flow-Restrictor" ..until proven otherwise..
..even the fittings at the oulet of the heater.

..to be continued.. :{)
 
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First make sure that the arrow is aiming toward the nozzle at the end of the hose (eventually), not back toward the pump.

Are you using downstream or soap nozzles? If not, the injector will not pull any chemical as those larger orifice nozzles reduce pressure so the injector can draw chemicals.
 
This is an old thread, Wow.
 
Like mentioned, direction of flow, large orifice nozzle usually a #30 or higher, and length of hose. Over 200' can cause issues not allowing draw. Also some guns can be too restrictive to allow the chemical to draw too. Feel free to give us a call if you have questions on it as well.
 
Adjustable ventuti injector SOLVES (almost) ALL THE PROBLEMs..
Otherwise..
if the hose is too long,
if the swivel is too restictive,
if the reel is too corroded,
if the connect hose is old and ends are corroded,
if the heater is scaled-up,
if the flow is too low,
if.. .. ..

If you're in this thread with ANY difficulty with a "DownStream style" chemical injector..
.. just GET an ST-62 !!
 
Remember this one Chris
Christopher said:
Hello Everyone,
I am getting ready to install my downstream injector I purchased last week. I was looking at it and the passage through it is very small. I am thinking that this will cause some back pressure for the pump if it runs all the time. Does everyone install this before the hosereel or just before the gun or after the gun? I am thinking that maybe I need to put in a "T" so I can by-pass it when I am not injecting chemicals. Does anyone have any pictures to share so I install it correctly? Thanks for any help.

Chris Chappell
Superior Power Washing
Corpus Christi, Texas 78415
361-853-2513
chris969@swbell.net
Click to expand...
 
That was a long time ago, almost a year I went into business for myself after over 10 years working for other companies and getting great experience.
 
Also found out that the regular injectors will restrict the flow somewhat, especially noticeable when running a surface cleaner so that is why I remove the injector when running the surface cleaner when cleaning concrete.
 
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