GX PUMP CS4 Portable PCP Air Compressor, 350W Powerful Motor,Max 5800Psi/40Mpa, Water and Fans Cooling, 5 Hours Continous Work, 12V Auto Stop PCP Air Rifle Paintball Air Compressor

Used only once to top up my 12 litre bottle. Runs quietly and handled the task without even getting warm. Only downside is that there is no mention of the grade of grease required

Good sound compressor quite ,I use to fill a 5lt bottle with no problems ,would recommend

Great little compressor Fills my fx impact and air maks with no problem to 250 and 300 bars and tops up air tank from 190 to 300 bar. 5 out 5 stars

I needed 350 bar for my air gun it this compressor reaches that easily with 50 bar to spare so it shouldn’t ever have to work to it’s maximum which must be a good thing. It appears to be well built and everyone that leaves a review is very pleased with them. £60 off at the moment is a bonus. It’s is very quiet compared to my general purpose compressor so I am very pleased with my purchase.

What can I say... nothing short of brilliant. Very quiet indeed. Easy to operate and straightforward controls. I like the double check on the pressure setting device. I just checked it with an external pressure gauge - 230bar - spot on. Filling is easy, I've opted for deionised water and a drop of antifreeze which has anti-corrosion properties - just to be extra careful. Filled my 280cc bottles from empty in no time - used to take me ages by hand.

Do the job

I purchased the compressor as I have a 3hr round trip yo get my bottle refilled, for my PCP rifles. So this was really to save time sitting in the car. Very pleased with it indeed. Pros, light, quiet, compact, appears very well made. Took about 38mins to charge my 4 litre bottle from 180Bar to 280Bar. Only a few mins to charge my Katran from 150bar to 280Bar. The pressure gauge is very accurate. Cons. No runtime meter. No thermometer though it did not seem to get very hot. However both would have been the icing on the cake.

Excellent pump so far, refilled my 3ltr bottle in about an hour. The lubricant grease seems to be a bit difficult to locate ? No spec or order details.

I was looking for a better replacement for my Yong Heng compressor and purchased a GX water separator filter and noticed the filter to be well thought out and built like a tank. I was impressed so much with the filter build and performance I decided to purchase a GX GS4 compressor. Upon opening the packing crate I removed the compressor and read the instruction sheet. Imagine an instruction sheet with a compressor. (Some do-not. have one). I live in Utah wher winters get cold. My compressor would be in my shop so used a 70/30 mix of green antifreeze with distilled water and had a 7 ph factor. I bought the compressor to mainly fill my 6.7 L tank. I started the fill procedure as per directions such as opening the vent to let compressor start then closing vent to prevent the compressor from starting under pressure. 3.4 hours later my carbon fiber 6.7L tank was full at 4350 psi. I shut of compressor but let the coolant flow through the compressor to cool it down. Over the time filling the tank it never got really hot as the coolant radiator and fan worked great to keep it cool. It has a pressure shut off and a back up shut off for safety. The compressor is fairly quiet in its operation. The quality of the build is amazing. It is really built strong and for reliability. It does not struggle to fill the 6.7L tank. Most of the other tanks need a cool down period filling tanks that size. I am not only impressed with its capability, but also the machining, and quality of the unit. The unit will compress air to 5800 psi and has safety devices to keep excess pressures from causing issues. This is a PORTABLE unit and weighs 29 lbs and can run on 12 volts or 110v. It uses 345 watts with compressor on. I tried to save money on lesser quality compressors but they did not perform well or died within a few months. This GX compressor is not that more expensive. It truly is a well made compressor of quality workmanship and design with safety systems and pressure back up switch (2) to keep you safe. I appreciate the safety as well as the unit. NOTE: If you have any high pressure compressors look into the GX Drain Filter as it by far is the best strongest oil and water pcp filter out there. I am not affiliated with GX but after buying the compressor and filter I am and will be a GX customer. Dr.Dave. Utah

Does the job as advertised. Tops up the 1l bottle in minutes. The noise level is quite acceptable. Easy to handle. Very recommended!

Excelente compresor. Bien acabado, sencillo de usar, rápido y compacto. Se puede usar con la batería del coche Carga las botellas de 7l. Sin tener que parar. Poco ruido. Muy contento. No es el más barato pero es muy bueno.

Vlotte levering. Vulde luchtfles 7,5L op 200bar naar 300 bar in Specht 29mim. De Pcp geweren zo in een oogwenk opgeladen,

ottimo compressore adatto sia per rabboccare serbatoi che bombole spedizione rapida