Air compressor unloader valve - Emglo M990-HC4V, Emglo AM780-HC4V, Porter-Cable CPF23400S, Porter-Cable CPL6025

Air Compressor Unloader Valve - 1 2 3 4 5

*2-1/2 HP Electric Master Series Compressor* \| Emglo M990-HC4V**
	$660.00 by Emglo One-year warranty Requires 20 amp circuit breaker Delivers 5.2 cfm at 125 psi Powerful 2-1/2 hp electric motor found in M990-HC4V's reviews: Very good - with provisos - Just received my M990 compressor after my local small engine repair shop recommended it over others. Plenty of power, great pressure and set up for two air hoses right out of the box. Seems an internal pressure valve must have gotten a piece of trash in it and it wouldn't release enough pressure to allow the motor to restart. provided excellent assistance, bottom line however is that it needed to go to the local repair shop for warranty work.
*2 HP Electric Air-Mate Compressor* \| Emglo AM780-HC4V**
	$500.00 by Emglo One-year warranty Rugged cast-iron cylinder Performs at above average working pressures Delivers 3.6 cfm at 125 psi Powerful 2 hp electric motor found in AM780-HC4V's reviews: CONTRACTOR COMPRESSER DREAM - I HAVE OWNED TWO OF THESE WONDERFUL EMGLOW COMPRESSERS AND THE ONE I AM USING HAS RAN FOR FIVE YEAR THE ONLY TROUBLE I HAVE EVER HAD WAS WITH THE PRESURE TUBE THAT RUNS TO THE CONTROL VALVE POPED OFF AND I HAD TO REPLACE THE PLASTIC 1/4 HOSE WITH A NEW COPPER ONE TOTAL COST OF ZIP . DOWN TIME ZIP DAY IN AND OUT YEAR AFTER YEAR ENOUGH AIR TO RUN TWO FRAMERS AT A GOOD RATE OF PACE .

*3 HP, 4-Gallon Side Stack Compressor* \| Porter-Cable CPF23400S**
	$466.00 by Porter-Cable One Year Warranty Convenient control panel has regulator, gauge, and two quick connect outlets Higher tank pressure provides more usable air per tank re-charge New high-pressure design keeps tank pressure between 110 and 135 PSI 3 HP induction motor delivers 7.7 SCFM at 40 PSI, 5.5 SCFM at 90 PSI found in CPF23400S's reviews: First Impressions... - It only took 3-days for my new compressor to arrive at my doorstep! And best of all, the shipping was free! I immediately unpacked the unit and checked it over. I followed the manufacturer's advice and went through the 15-minute break-in period leaving the tank drain valve open while the motor was running. When I shut the valve after 15-minutes of run time, it only took a few seconds to fill the twin tanks to 130 p. Although I haven't used my compressor yet, first impressions are everything. This unit is compact, relatively light weight, fairly quiet, and fills up extremely quick! I can't wait to attach my air nailer and get to work!!!. Great General Purpose Portable Compressor - I bought this compressor* to run nail guns, air sand and spray paint. It is also handy to limit the pressure to safe levels for your various air tools.* You do have to "break it in" before working with it; just open the drain valve and let it run for 15 minutes. Shut it off, close the valve and turn it back on; you're ready for action! The unit really is portable, especially with the well balanced carry handle protruding from the top. It is not as loud as large upright compressors, but it does make a fair amount of noise, although not as much as I expected. I use it with a Souix air sander and it does run longer when I am working. If you take on a tractor trailer, get a bigger compressor. Plenty of Power to Offer...but it needs plenty, too. - I tried the compressor on an undedicated 15 amp circuit, and it immediately blew the switch every time. I also learned (the hard way, of course) that if you are using the compressor with a 50' extension chord (with too high a guage) on a 20 amp circuit, the pump will not get enough electricity to pump air after cutting-in when the tank pressure drops to 110 psi (the specified cut-in pressure) - the pump will start pumping, but quickly stop and you'll hear the motor straining until it blows the 20 amp circuit, too. It's cheaper, my new Porter Cable friends say, to buy more air hose than the right gauge extention chord - Ah, such knowledge I'm gaining. Sadly, the compressor arrived with an air intake filter housing badly bent downward (done apparently at the factory, as the box from Amazon wasn't damaged), so I couldn't remove the air filter. AND, the drain valve (to drain water from the bottom of the tank) would not completely close allowing lots of air to excape from the tank. In my chats with an Amazon tool sales rep, and later with a Porter Cable tech rep (to help me unravel the compressor's electrical-needs mysteries), both Companies quickly and nicely insisted on sending me a new air intake filter housing and a new drain valve (I guess I'm getting two of each?) - no questions asked. The machine is fairly loud, but it only takes my pump about 6 seconds to refill the tanks from the 110 psi cut-in pressure to the specified 135 psi cut-out pressure. I figure the noise level goes hand-in-hand with the added power this compressor offers - power I think I need.
*6 HP, 25-Gallon Oil Lube Compressor* \| Porter-Cable CPL6025**
	$504.99 by Porter-Cable One-year warranty Provides 8.6 SCFM at 40 PSI and 6.8 SCFM at 90 PSI High-flow regulator for more efficient operation of pneumatic tools Tank pressure is maintained between 110 and 135 PSI for more usable air High-pressure technology provides the equivalent of a 32-gallon air supply found in CPL6025's reviews: *Great Compressor!!* - I use this compressor in a wood shop and it provides enough air pressure for all my needs. The output pressure valve is convenient and easy to use so you don't have to spend a lot of time trying to set the proper air pressure for the tool you are using. All in all, this is a great compressor that can handle a large variety of jobs.