does a pressure washer that is 3000 psi at 8 gpm clean better than one at 4000 psi at 4gpm?

pressure washer 8 gpm image

lance c

Answer
Generally the higher pressure, not the higher flowrate, indicates better cleaning power.

My sink is 2.2 GPM. Can you convert in psi?

Q. My sink says it is 2.2 GPM. I would like to connect a small countertop dishwasher on it. The owner's manual says it needs to be between 15 and 20 psi (pounds per square inch). Is it ok?

THANKS :)
Can you convert knowing that it is a STANDARD KITCHEN SINK????

Please no stupid anwers like "no, you can't convert".
The following is engraved on my sink faucet "A112.18.1 2.2 GPM (8.3 LPM) MAX".

Answer
Not a stupid answer if it's true.

This link walks you through the averages found throughout the US.
http://www.ehow.com/info_12003745_normal-water-pressure-house.html

I think you'll be fine, if want to check, an $8 gauge like in the link can be used.
This one screws on outdoor hose bibb. If you're having it delivered, ask about it.
http://www.google.com/shopping/product/6037431229349956563?sourceid=ie7&q=home+water+pressure+guage&rls=com.microsoft:en-us:IE-SearchBox&ie=UTF-8&oe=UTF-8&rlz=1I7TSND&sa=X&ei=j-8PUb7EEsuiqQHi14GACw&ved=0CKoBEMwD

EDIT: As Answerers 1&2 graciously indicates, and with what is illustrated in links, determine.,
1- Water pressure - use a pressure gauge, If not within spec, read first link thoroughly

2=Rate of flow (GPM) - Find a empty container( IE- one gallon), turning on hot water to fully opened, fill container while timing, if container fills in less than 27.5 seconds your flow rate is over 2.2 GPM. I doudt flow rate will be that great. (if gallon container fills in a bit under 30 seconds, you should be fine)

Compare those two numbers (pressure and GPM) to washer specifications
convert to metric if you want

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