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Pressure washer question
None of the pressure washers I have (up to 3000 psi) can suck water at all. The pistons are ceramic inside the pump, and the owner's manual says to never run the pump without having water pressure first. Otherwise, the pistons will crack since they're not being cooled and more importantly, lubricated by the water. I have a Jenny-brand steam cleaner that has a reciprocating piston pump that doesn't use all that much water since it first fills up a reservoir. I thought I could run a garden hose from a caged/palletized, 375-gallon, square, plastic tank sitting on its pallet on the ground. Wrong. It barely dribbled out and wouldn't even supply the homeowner-style 6hp pressure washer. Cavitation, or more accurately starvation wasa problem.
I ended up lifting it 10 feet with the bobcat to get enough head pressure/volume to supply---and even then it wasn't quite adequate. I checked around and a lot of guys use a small electric air compressor, pump-type tire pump or even a pump-type chemical sprayer to pressurize the tank and the subsequent flow.
After all, 4 gpm, if you think about it, is a lot of water especially under 45 psi coming from the tap, let alone from a tank or drum with no pressure.
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Pressure washer question
Local car washes--oh boy. They're the reason I had to invest in my own equipment. I was using my local car wash cleaning off my big Case trencher one day, which wasn't even that dirty. My fairly long trailer was just past the front of the doorway so that it was collecting wash water and draining onto the parking lot. I was using the fluid-formerly-known-as-"engine degreaser", now legally called "tire cleaner" that looks like bright green antifreeze. Well, the owner was "tired of guys like" me using the car wash---to wash their equipment. So he puts up cameras and signage saying he'll prosecute anyone who washes anything than basically "clean" cars and trucks. So he tells his City sewer worker cronnie buddies that any body not doing what he says that they are to call and report it to him. Within seconds of the green fluid on the pavement, the owner (for whom I have done dirt work, and demolished a rental home and have my vehicles serviced at his oil change store) rolls up like Starsky and Hutch, along with the City worker. The City worker grabs his cell phone and declares my truck and trailer are not to be moved and are under quarantine for polluting, and that he's calling the police (who are right across the street) and the EPA---and I'm "in BIG trouble"! The owner takes him aside and calms him down after they realize it's the car wash's f----ing chemicals! Not satisifed, the City worker demands I carry around a 55 gallon drum of water AND a power washer to clean my stuff (F---k YOU!). The owner says he only wants "clean cars" in there (hence the cameras, signs, and especially changing the wording of "engine cleaner" to "tire cleaner", etc.) I tell him that's fine, I'll take my business elsewhere, along with the other business from his other car wash near my home AND the oil change place he owns. Realizing he's now pissed me off--- and I told him I'd tell my friends too, he backs down and says, "well as long as you spray down the booth and shovel up your dirt". "Nope, I'll do it myself at home, thanks." Never been back to either since.
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Pressure washer question
Rankin: I doubt the high vol. RV pump will be adequate to supply your home assuming you have a tank. If a well, forget it. You might want to consider connecting your well pump to either a generator or even a 5,000 watt 12vdc-120vac convertor (a.k.a. invertor). I have one installed under the passenger seat of my pickup. I use it about once a week for powering anything from a 4" grinder, to a sawzall, to a 9" grinder, to a 65lb. electric jack hammer. Even runs a 6-peak hp shop vac on a 100ft extension cord. Bought it on e-bay for less than $200. It's a godsend.
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Pressure washer question
"I am mostly interested in being able to flush the toilets without having to fire up a 10KW genset for such a small chore."
Then... go outside and you won't have to flush :0
Or you could put that pesky pile of bricks to use (read: brick sh--- house).
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