Even when house washing using a pressure washer we wash at very low pressures. I’ve never used two hands doing a house wash and there’s no need to. Not much different than holding a garden hose gun. We use nozzles that lower the pressure to around 150 psi or so. Probably even less sometimes.
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Whatever works for you. 
But why not lose the extension? Just go with no lance like many of us.
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He’ll figure it out. One of my best friends has about the largest residential washing business around here and he runs the injector like that and his guys just carry one gallon jugs around with about 3 ft of hose. It is by no means effecient, but it’s how he started and all of his guys have learned that way.
It does if you ever use the high pressure tips only, which I never do with that gun anyway.
With the shooter tip and the fan tip the venturi effect (I think it’s called) causes it to pull so zero water goes out of the barb.
Also, because it is after the gun, there is no water pressure when I am off of the trigger.
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I have a shorty like that too. I find with the lance I have a straighter stream and can hit 3 stories with my shooter tip, might be all in my head, but the short gun doesn’t seem to reach as high.
I only have a 4/4 though.
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Maybe I will try to get my hands on another GP high draw and build it into my short gun and see if there is a difference…
Is that Mark?
Yes. I took took two of his crews to TN for a month once for apartments and I’ve never seen so many one gallon jugs lol. He is by far the nicest person in the industry. I love him and his sister dearly. They have helped me over the years in a lot of ways
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Lol, I can’t imagine having to haul those around all the time. Seems like a real headache.
I’ve never met Mark, but we have some mutual acquaintances through MMA gyms. Only heard good things though and I’ve seen his guys around a bunch. Must be doing something right with as long as he’s been in business!
Back in the day, we were the only have in town. I went into Apartments and he kept the residential and added painting, rental houses and some property development in Argentina or someplace like that. He started the same year as me with a old 4 door sedan and a rent by the day ladder, cleaning gutters.
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Could you imagine toting a bucket of sh all day and working for Grump ??
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Would you believe I’m a decent boss?
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I want to see an arm wrestle between him and racer, I reckon racer puts him away.
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Only if you believe I’d be a decent employee.
But to answer your question, YES.
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No, he’s a lot bigger than me. He’s just a kid anyway. But I am better looking, lol.
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I was wrong, you are correct, it does continue to siphon if you put the gun down. I tested it today and it did. I guess I always pull the hose off of the barb before putting the gun down just out of habit.
Good to know, thanks!
Just here to say that this injector lasted me over 300 hours. Changed it out today because I wasn’t getting soap. Turns out my drop stick came loose. Feels like this injector would’ve lasted me the whole season.
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You got a hot mess of plumbing going on there 
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Speaking of “the best injector on the planet”, I had a GP Stainless/Kynar dual barb blow out on me today (just the bleach barb; soap barb is still good)
Pro tip: if your flow unloader suddenly starts acting like a trapped pressure unloader, you might’ve sprung a serious leak somewhere. Like a blown out injector. Took me a few minutes to figure out what was going on, by which point I probably lost a gallon or two of SH out the soap line onto the ground.
Feel like I’m really putting old Murphy to the test this week…
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