If I connect 2 pressure washer pumps to a motor, will I get double the output????? help?

wehaulmove

ok here is the situation, I have two 3000PSI pressure washer pumps, and a gas engine, If I took both and connected them to the motor, supplied enough water flow and used a coupler to join the output on both, will I get 6000psi of water pressure or will I end up creating back pressure and possibly damaging the pums, or will I get killed in the process.

I hope someone with an engeniering degree reads this, maybe I can get a valid answer. oh and forgive me for my spelling disaster here....he he he

Answer
Pressure does not add up like that. If both pumps put out 3000 psi then the pressure would be 3000 psi.

If there was a large difference in pressures between the two pumps, you could create some back pressure for the smaller pump, this pump would back up on its pump curve and its output gpm would go down. If it is to great a pressure difference for the pump, the pump could spin or even cavitate which then could cause problems.

But, you have one motor connecting to 2 washers, you might not even get 3000 psi since the horsepower from that motor is being shared since the motor is now seeing twice the load. Check what the motor HP is and what HP is required by each washer.

I think you are safe so far ;)

Please explain how pressure washer work and its pressure generating principle.How big psi can 12V can generate

adhikari_s

I am looking for a pressure pump(washer) that generates 1500-5000 psi applying 12V DC battery. How many batteries required ?
Can I buy such pumps in the market ? please give more information on it.

Answer
My pressure washer has a 5 horsepower motor and creates about 200 psi. The short answer is that car starter motors create 5 to 10 hp for a short while but get hot fast. One battery will do the job for a very short while. The easier way is to use an electric washer, convert the 12 vdc to 120vAC with an inverter and wash away. The amount of batteries will depend on how long you want to operate at high pressure. The more the better. Can you buy such a pump, sure, convert a small home electric unit. Another good source for this stuff is West Marine, check their website and they have a great tech staff and no I don't work there.

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troy belt pressure washer?

BETTY D

can anyone tell me what kind of oil to use and how much goes in?It's a 6.75 hp. 2850 psi 2.6 gpm.

Answer
Most pressure washer pumps take a 30 weight non-detergent oil. The motor takes a normal motor oil. You should be able to find non-detergent oil at an auto parts store. Hope this helps.

how do build my own pressure washer with gas motor?

thecoorsgo

Answer
The dangers of making your own pressure washer could result in serious injury. You would need to create a sealed compression chamber for your air that would have to create 1400+ PSI and hold 1-5 gallons of air for personal use, and 20-50 gallons of air for commercial use. you would then need a water source, hose or tank. by the time you go through all of this trouble you will have spent more than you would to buy one.

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how do build my own pressure washer with gas motor?

thecoorsgo

Answer
The dangers of making your own pressure washer could result in serious injury. You would need to create a sealed compression chamber for your air that would have to create 1400+ PSI and hold 1-5 gallons of air for personal use, and 20-50 gallons of air for commercial use. you would then need a water source, hose or tank. by the time you go through all of this trouble you will have spent more than you would to buy one.

what is the best pressure washer?

Pandora

Looking for a good gas cold water pressure washer for home use.

Answer
There are a couple different types of cold water, gas pressure washers out there. There are direct drive models, and there are belt drive models. The difference is as follows:

Direct Drive- These things are more efficient because they have no moving parts. the shaft from the motor is connected directly to the pump, so no belts or pulleys are required. These units are cheaper because they are simpler to build.

Belt Drive- These units use a belt and pulleys to connect the motor and the pump. This setup uses a few more parts, but is actually preferable to the direct drive units because they last longer. This is because a larger pulley can be used at the pump, causing the pump to run at a lower RPM than the motor. this is less straining on the pump, and will help your unit to last longer. Unfortunately, it is also more expensive.

For home use, I would go with a belt driven unit. If you are using the pressure washer less than 20 hours a week consistently, then it is not worth the added cost to get a belt driven unit. If you do a quick Google search, you will see that most sources recommend 3000 PSI for concrete, and that is more than enough for siding and decks (I'll put a link in my sources to a forum discussion on what pressure is needed for concrete). 3000 PSI is also enough to run a surface cleaner or rotary nozzle if you later decide that you want to speed up that driveway cleaning. I have heard it said that pressure cleans, but flow helps you clean it faster, so make sure that the machine you get has a decent GPM rating. A machine that is like 3000 PSI at 2 Gallons per minute will be perfect for what you need it for.

Note: I would get a machine with a Honda engine. They rarely have to be serviced, and after market parts are abundant online for cheaper repairs.

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What good is a surface cleaner for a pressure washer?

pressure washer motor image

Miles bobb

So I am new to pressure washing and I had some questions! I have seen a thing called a surface cleaner and it looks like it does the same work a pressure washer does but just easier and faster! Will you explain the difference between normal pressure washing and a surface cleaner?

Answer
When you say "surface cleaner", I assume you're referring to a device that hooks up to a garden hose, not a chemical treatment.

A surface cleaner can only deliver water at your water line's pressure. This should be between 40 and 80 psi (pounds per square inch).

A pressure washer has an internal, electrically operated motor and pump which delivers water at around 10 atmospheres (1500 psi).

A pressure washer will clean grime off that a "surface cleaner" won't. If all you have to clean is superficial dirt and debris, a surface cleaner should work just fine.

If however, you have embedded dirt debris, or moss, a pressure washer is what you need.

NOTE: Be careful what you use a pressure washer on. It can damage some surfaces and remove paint.

Is it ok to run a Craftsman gas powered pressure washer in the rain?

ed g

Just bought a Craftsman pressure washer. Gas powered. Briggs & Stratton engine. I believe it's a 190cc. Using it on a huge fence and deck. Forecast is for rain for the next few days. Really want to get the job done. Rain doesn't bother me, but is it bad for the motor?

Answer
The heat produced from the device running is enough to evaporate any moisture it comes in contact with, ie, light rain storm, inadvertant spray.

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Accidentally put oil in the air filter in a pressure washer's engine?

pressure washer motor image

Panba

Yesterday while trying to set up a pressure washer, I accidentally put the motor oil into the air filter spot. Turned it upside down to drain the oil but the engine starts and stalls. Not sure if it's ruined forever or what to do. It's a Robin engine and a Karcher pressure washer.

Answer
It is unclear to me how you would put oil into the air filter but you should never turn an engine upside down. The first thing to do is check the oil level in the crankcase. It should not be above the full mark. Remove the air filter, if it has oil on it replace it. Clean all the oil from the air box (where the filter goes) and install the new filter. Remove the spark plug and give it a few pulls. Replace the plug and start it up, it may smoke a bit but should clear out.

I have a Troy-Bilt pressure washer 1 year old. I can not get any pressure there was dirt in pump outlet pipe?

PC 20-04

I have a Troy-Bilt pressure washer 1 year old. I can not get any pressure there was dirt in pump outlet pipe. I cleaned out the dirt but now it will not build up pressure. Motor runs fine and if you wait a minute it will build up some pressure by not pulling trigger but will quickly drop.

Answer
check your water intake
" " your filters

" oil the pump throws!!

good luck

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