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Old 09-23-2012, 06:39 PM
greendoctor greendoctor is offline
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Join Date: Mar 2008
Location: Honolulu, Hawaii
Posts: 8,190
The Echo sprayer uses a mini centrifugal pump rather than the duplex piston pumps on the other machines. According to the specs, that pump is good for 140 and your pressure is adjustable via engine throttle. Application volume is a max of 1.3 GPM. I really appreciate the high output of the Maruyama for spraying trees. That one is good for 1.9 GPM, enough to drive a tree gun with a 1.5 MM orifice.
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