Description
GX PCP HAND PUMP 3-STAGE 300BAR
As far as hand pumps go, the GX PCP Hand Pump 3-Stage 300BAR is one of the best models out there today.
Lower in cost than cylinders and compressors, an ideal filling choice for those on a tight budget. Also perfect for shooters looking for a back-up filling method. Made for use on PCP rifles, as well as pistols. Also, you need no electricity to run it, nor to refill it like scuba tanks. So, it is ideal for off the grid airunning, or if you live in an area where there’s no scuba cylinder filling services.
This hand pump is, to be sure, by far the most portable and affordable refill option on PCP airguns. It is also perfect to keep as a back-up filling option. If your scuba tank falls too low, or power outages prevent the use of a compressor, simply grab your hand pump. Of course, you can take it out to the field in a lightweight backpack, or your rifle’s carry bag for on the go refills. Alternatively, you can store it in your vehicle, as it takes up very little space.
Assembly is quick and easy, with the included Allen key fitting all 4 necessary screws. GX included tools for assembly and maintenance, spare seals and parts, as well as some silicon oil and a test plug to maintain your hand pump.
Filling Tips
Note that a PCP hand pump may not fill a completely empty air rifle, because you first need to pressurise the hose and check valve. Which, to be honest, requires significant effort and hand pumps are not designed for filling from zero pressure. The initial pumps only build pressure in the line between the pump and the gun, and it can be hard to overcome the “check valve” until the hose is pressurised.
Use your body weight: Use your body weight to push down on the pump, especially as you reach higher pressures.
Ensure the bleed valve is closed: Before you begin pumping, make sure the bleed valve on the pump is closed tightly.
Pump steadily: Pump slowly and steadily to avoid creating excess heat, which can damage the pump’s O-rings.
Make upstrokes count: On multi-stage pumps, the upstroke also creates pressure. Pause briefly at the top and bottom of each stroke to allow the air time to transfer between the different stages.Â
Check the pump’s pressure gauge: You will see the pressure gauge on the pump rise before the one on the rifle, confirming that the line is pressurising.
Let the pump cool: Let the pump cool down every 25 to 50 pumps, or about 5 minutes of continuous use (whichever comes first) to prevent damage.
Features
Stainless steel construction and quality finish that’s durable, as well as light in weight.
Compact design extends from roughly 608mm closed to roughly 1058mm opened, making it portable yet robust.
Works in 3 stages for less pumping effort to reach the maximum of 300 BAR / 4350 psi.
Non-slip grip with contours that is both durable and comfortable.
Fixed butterfly foot-piece prevents flex, so you have less parts that could loosen and more stability.
HP hose with steel spiral reinforced ends for both stability and durability.
Features a quick-connect fitting for your airgun or it’s filling probe.
Oil / water separator filter located on the hose protects your rifle from dirt, dust and also moisture.
Bleed screw to release the air in the system before removing the hose from your airgun.
Large faced, easy to read colour-coded gauge with black impact resistant cover.
Maintenance
Being the most affordable filling method, you can be assured that it’s also the most labour intensive. The bigger and emptier the air reservoir on the rifle and the higher the BAR rating, the more you’ll have to pump, of course. You’ll also have to perform some maintenance and upkeep. Refer to the included booklet for recommended maintenance and also make sure to use the pump as instructed. If you take proper care of your hand pump, as with your airgun, you’ll enjoy it for far longer.
We highly recommend that you acquire spare seals for your handpump. Take any spare seals that are included to your local seal / o-ring dealer. They can measure the seals and assemble a few spare kits for you. This is a very inexpensive way of ensuring you always have spares, as importing spare seals alone are very expensive, so most dealers / importers do not import spare seals.
Do not let dirt or moisture enter the moving parts. This will damage the pump, just like a car’s engine.
Very importantly, do not use just any lubrication! Use only pure silicon oil that cannot combust under pressure.
SPECIFICATIONS
Brand: GX Pump
Pressure: 300 Bar / 4350 psi
Main Body Material: Alloy
Finish: Black
Stages: 3 Stage
Filter: Hose-fitted
Hose: 50cm Flexible micro-bore hose with spiral steel enforcements
Coupling: 8mm quick-disconnect female fitting
Manometer: Colour coded and marked in BAR and PSI
Footpiece: Fixed Butterfly
Bleed Screw: Yes
Pump Weight: 2.13kg
Closed Length: Approx. 61cm
Extended Length: Approx. 106cm
This hand pump video by Pyramydair is an oldie but goodie, giving expert tips on hand pump usage.
Package Contents
Hand Pump (supplied unassembled)
Spare parts & seals
Extra filter inserts
Silicon oil
Multifunctional wrench
T-Wrench
Test plug head
Operation Manual
Important Note From Importer
All Pictures shown are for illustration purpose only. Variations may occur due to batch imported. Rifles, cylinders and other items not included, unless specifically stated.
GX may rebrand as Titanium. Illustrations, specifications and information (including Online User Manual) as supplied by Manufacturer / Importer.
Hand pumps do not carry a warranty, as misuse, dirt, moisture, overheating, overuse and/or lack of lubrication (to name a few) may cause damage to internal seals. No returns accepted by importer or resellers.
Refer to the product manual or Manufacturer’s website for detailed instructions and guidelines, as well as safety information. Do this before assembling anything. Incorrect set-up and/or use of compressors and pumps could cause damage to the unit and can even cause injury.
Some assembly required.
About GX Pump
GX Pump (manufactured by Nantong Guangxing Pneumatic Equipment Co., Ltd.) is a specialised manufacturer of high-pressure PCP air compressors. With over 20 years of experience, their product line is quite vast. It includes compressors and their accessories, as well as manual pumps like hand pumps. Based in Jiangsu, China, where the world’s best production facilities are located, according to many. Known for affordable, durable, and reliable airgun/paintball compressors, you can’t be a PCP enthusiast and not know of GX’s products.
They produce and distribute these units worldwide, focusing on patented compression methods and structures. GX offers a variety of compressors, from ultra-portable 12V units to more powerful, larger models. Designed for both air rifles and paintball tanks, you can also fill small diving cylinders with some models. Meanwhile, the larger models can fill large cylinders with ease.
Most units operate either via a 12V DC car battery or a 110V/220V AC wall outlet using a converter. With this array of models, you can focus on high end features, or go for the most affordable. Either way, you get great quality and durable products. Some features worth mentioning are automatic shut-off when reaching set pressure and, on some models, a 30-minute auto-shutdown to prevent overheating. Depending on the model, they use built-in fans (oil-free/water-free in smaller models) or combined water/fan cooling for continuous operation. The E-5K2, their top tier compressor in 2025, is highlighted for being built “like a tank” for high-volume use, like filling larger cylinders.
Capable of reaching pressures between 30MPa/300Bar (4500 PSI) to 400 BAR (5800 PSI), with some models designed for faster, more efficient filling compared to competitors.
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