Air Compressor Relief Valve - 1   2   3   4   5
3 HP 4.2 GAL Tank Electric Compressor | Grip-Rite GR2500
GRIP-RITE GR2500
$399.00 >> $299.97
by GRIP-RITE

Max psi 135
Amp draw 14.8
Tank Capacity 4.2 gallon
On/Off psi 105/135
HP Peak 3

found in GR2500's description: 2 GAL tank Electric Compressor - GR2500 3 HP 4.2 GAL tank Electric Compressor The Grip-Rite GR2500 offers the professional contractor a compressor that will handle any task.5 horsepower (running) compressor is powerful enough to keep up to three framers or roofers working all day. For lighter finish work, it can supply air for four or more workers. Product Features Supports three framers or roofers working all day Electric, direct drive and splash-lubricated Powerd by Speroni pumps Short pump-up time of approximately 55 seconds Quick, 14 second recovery time Start-up relief valve for easier starting and minimized cold-start amperage draw 3,400 RPM Heavy-duty pressure switch and durable metal guages Limited 12 month warranty Product Specifications HP Peak: 3 On/Off PSI: 105-135 Max PSI: 135 RPM: 3,400 Tank Capacity (gallons): 4.
15 Amp 3 Horsepower 4-1/4 Gallon Oiled Twin Pontoon Compressor | Grip-Rite GR2500
Grip Rite GR2500
$299.00 >> $299.00
by Grip Rite

12-Month limited warranty
Electric direct drive and oil splash lubricated for longer life
Superior Quality Speroni?® pump
Life expectancy of up to 8,000 hours
Contractor grade, 3 HP (peak), 4.2 gallon capacity

found in GR2500's description: These same principles are now reflected in Grip-Rite's line of professional quality tools and compressors. This is currently Grip-Rite's flagship compressor for good reason. This unit features stainless steel reed valves and oil splash lubrication for a long life of hard work (up to 8,000 hours!). Other added features include a heavy duty pressure switch and large metal gauges, a start-up relief valve for minimized amperage draw upon cold startup and a moderate 69 decibel noise level. The pontoon-style tank design of this unit was intended to minimize tip over while still offering enough air to handle nearly any job. Compare to: Hitachi EC119, Porter Cable Job-boss Model #C3551, Porter-Cable CPLDC2541S, Porter-Cable CPLDC2540S, Rol-Air The Bull.
4 Horsepower 4 Gallon Oiled Twin Hot Dog Gas Compressor | Thomas TG-400HST
Thomas Compressors TG-400HST
$999.00
by Thomas Compressors

Fuel Capacity .66 Gal.
Engine Honda GX120 4 HP OHV Gas
Pressure Switch Continuous run unloader valve with idle down - Unloads @135 PSI, Loads @ 115 PSI
Air Delivery 5.4 CFM @ 100 PSI
Air Displacement 12.4 CFM

found in TG-400HST's description:

Longer Life - With the patented LifeGuard™ dirt deflector that keeps job site dust and grit out of the compressor, the new Renegade® will perform year after year

Engine - Cast iron cylinder sleeve extends life of engine

Perma-lube oil-less design for maintenance-free operation and quick cold weather starts

Designed for Maintenance-free operation with no belts, belt guards or pulleys, which also means less vulnerability to job site damage

High performance overhead valve design for added power and high efficiency

.
found in TG-400HST's reviews:
Air Cube 1 - This compressor is a contractor's dream.4 CFM @ 100 PSI air delivery. This 1-1/2 foot cube gas compressor fits in the trunk of a midsize vehicle. This is the only gas power compressor that I have worked with that a single average size person can move (alone). The engine optimizes fuel efficiency by automatically slowing to an ideal speed when the air tanks are full.

The engine, even while operating faster to fill the air tanks, is relatively quiet allowing a normal conversation a few feet away. It is quieter than the pancake compressors I have used.

Each air tank has a separate moisture drain valve to keep the tanks from rusting on the inside.

* The air regulator comes with two 1/4" female NPT thread connections. Since I could not remove the stripped hex plug, I used the air gage connection to add a tee.

8 HP Wheelbarrow Compressor | Emglo MG8HGA-8P
Emglo MG8HGA-8P
$1,877.00
by Emglo

Enclosed steel belt guard
Four-cylinder cast-iron pump
1/4 npt soft-seat drain valve
Bullwhip idle control
Integrated control panel
5.5 HP Wheelbarrow Compressor with Bracket & Regulator | Emglo MK5HGA-8P
Emglo MK5HGA-8P
$1,179.00
by Emglo

Powered by 5.5 hp Honda engine
1/4 npt soft seat drain valve
Bullwhip idle control
Integrated control panel
2 cylinder cast iron pump
1-1/2 Horsepower Dual Control Wheelbarrow Compressor with Bracket and Regulator | Emglo MK15A8P-DVS
Emglo MK15A8P-DVS
$N/A
by Emglo

2 cylinder cast iron pump
Dual voltage switch
1/4 npt soft seat drain valve
Oil lubricated
Dual control switch
2 Horsepower Wheelbarrow Compressor (with Dual Control/Voltage) | Emglo MK2A8P-DVS
Emglo MK2A8P-DVS
$1,039.00
by Emglo

2 cylinder cast iron pump
Integrated control panel
Dual voltage switch
Dual control
1/4 NPT soft seat drain valve
2 HP 14.1 Amp Electric Master Series Compressor | Emglo M800-HC4V
Emglo M800-HC4V
$560.00
by Emglo

One-year warranty
Features 1/4 NPT soft seat drain valve
Rugged cast-iron cylinder provides maximum durability
Integrated high-profile panel houses regulator gauges and universal quick couplers
Powerful 2-horsepower electric motor delivers 3.8 cfm at 125 psi
13 Amp 2-1/2 Horsepower 4 Gallon Oiled Twin Hot Dog Compressor | Makita MAC2400
Makita MAC2400
$460.00 >> $249.00
by Makita

19-3/8 by 18 by 18-3/4 inches; 77 pounds; 1-year warranty
1/4-inch brass Makita universal coupler
Cast-iron pump and roll cage construction
4.2 cfm delivered at 90 psi; low 1,720 rpm extends motor life and lowers noise
13 amp, 2-1/2-horsepower, 4-gallon oiled twin hot dog compressor with handle

found in MAC2400's description: From the Manufacturer
The new MAC2400 - Twin Stack air compressor by Makita is blowing away the competition.3 amps to operate, a lower 1720 RPM rating and a heavy duty Intake Air Filter system like no other, its easy to see how this unit will out last and outperform everyone else.2CFM @ 90PSI and is equipped with a lever handled ball valve drain system to get rid of condensation build up in the tank . Large automotive style industrial air filter for increased air intake and greater efficiency. Lever handle ball valve - tank drain valve improves upon standard petcock design for easier maintenance.
The Hotdog 12.4 Amp 2 Horsepower 2-1/2 Gallon Oiled Single Hotdog Compressor | Makita MAC700
Makita MAC700
$288.00 >> $176.40
by Makita

18 by 10 by 22 inches; 52 pounds; 1-year warranty
1/4-inch brass Makita universal coupler
Cast-iron pump and roll cage construction
3.3 cfm delivered at 90 psi; low 1,720 rpm extends motor life and lowers noise
12.4 amp, 2-horsepower, 2-1/2-gallon oiled single hot dog compressor with handle

found in MAC700's description: From the Manufacturer
The new MAC700 - Hotdog compressor by Makita is blowing away the competition with built-in features such as a super quiet motor that draws only 12.3CFM @ 90PSI and a lever handled ball valve drain system to get rid of condensation build up in the tank .0HP AIR COMPRESSOR 12. hot dog tank Low amp draw & oil lubricated Roll-bar handle Industrial air filter & cast iron cylinder Oil sight glass & lever handle ball valve Built-in thermal overload for motor protection MAC700 2HP AIR COMPRESSOR.
found in MAC700's reviews:
Recieved damaged, Makita service hopeless - Just received this compressor from Amazon/ToolKing.
The unloading elbow was snapped off from the check valve assy.
Makita has a problem in the packing of these compressor's which leaves the valve exposed to being crushed inside the container.The valve is on the side and all it takes is a slight bump and it's sheared off.If you need to put the compressor into service right away, I suggest buying local or
unfortunately another mfg.The compressor is quiet, and seems to
run ok, I have only done the initial start up though.Seems to be a great little compressor.
I'm going to use an easy out to remove the broken thread/stud from inside the valve and just buy the elbow locally(I hope)
You can see many other posts on the internet regarding this same problem.(supervisor)The compressor has been in service now for around 8mo.I did solder a new elbow onto a lower area of the check valve which works out better when the compressor rolls on its side.

Received Item, but can't use it yet. - BUT, because of the poor packaging, and the probable mishandling by UPS, the Unloading Valve was broken off inside the main Check Valve.
Damaged Goods -
The black plastic engine housing was cracked but remained in place, the air/condensation release valve at the base of the tank was broken off at the tank !?#%#! After a little hand work I removed what remained of the fitting, reversed and reinstalled the valve.
After repairs (seems odd to repair a brand new machine) it seems to run great, no oil or air leaks.

Arrived damaged - After opening the cardboard box that was obviously crushed, I found the plastic motor cover broked and the brass unloading elbow broken-off in the check valve attached to the side of the tank.
Another Damaged compressor - both the shroud and the unloading valve were broken (see other reviews) with no apparent damage to the shipping box.
Makita MAC700 -nice little compressor - I almost didn't order this compressor after reading all the reviews about shipping damage, but mine arrived in perfect shape.

My old pancake compressor finally died. It is resonably portable and very very quiet for a compressor. The drain valve at the bottom makes quick work of draining the tank at the end of the day.

Great little compressor - Be sure to fill with oil and install the air filter before starting. It required drilling out the check valve, retapping the threads, buying an equivalent part at the hardware store, and reinstalling. Serious PITA, but cost was minimal and repair works fine.

All in all, a great little compressor, and the best choice if noise is a concern.

Great compressor, but check the box thouroughly before signing for delivery! - After working with a friend's older version of this compressor for the last eight months, I decided to splurge and get my own. If this compressor is anything like the older model, it's going to last forever. It looks like someone must've dropped it, and from a pretty good height! One of the legs was bent about 2 inches, so the compressor would rock when set down. Fortunately, the compressor itself (external tubes and gauges and whatnot) are all fine. It's annoying, but I don't want to go through the exchange process and be without air for another two weeks.

The startup process is fairly simple. There are two plastic plugs on the compressor that need to come out. One covers the oil filler, and one covers the air intake port. You replace the plug on the air intake port (topmost plug) with the included air filter, and you replace the oil filler plug with the included oil cap. Then, open the air release valve at the very bottom of the air tank and run the compressor for 20 minutes. Check the oil level periodically, of course!

On a related note, I also bought the Campbell Hausfeld MP520010AV air tool accessory kit to get me started.

Air Compressor Relief Valve - 1   2   3   4   5

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