Ninjas PCP Fill Solutions

Overview
The Ninja products are both the lowest cost solution, and easiest tank to get refilled. Because for all practical purposes it is a standard 4500 psi paintball tank. Thanks to the popularity of the paintball sport , and the easy no brainer way this tank can be filled. To refill this tank is as easy as connecting a female foster fitting (standard in the paintball industry) to the male foster fitting on the tank and turning on the air. When you refill paintball tanks you don’t have to turn any valves like on other tanks, because the integrated male quick connect fitting is equipped with a one way check valve that is designed to let air enter in to the tank through the fitting, then holds it in the tank once the force of the incoming air is reduced to a lower pressure than the air currently in the tank.

Tank Sizes
For PCP use they have 3 sizes of 4500 psi tanks.

90 cubic inch, which will hold 16* cubic feet of air at 4500 psi.
Length = 12 5/8″, Diamater = 4 1/2″ Weight (empty) = 3lbs 11oz.

68 cubic inch,
Length = 10 3/4″, Diamater = 4 7/16″ Weight (empty) = 2lbs 11oz.

50 cubic inch
Length = 9″, Diamater = 4 7/16″ Weight (empty) = 2lbs 3oz.
I believe the most popular size for PCP air gun use will be the 90 cubic inch versions. The reason I am making that prediction is that it will give you the most refills on your gun per fill. Assuming most paintball shops that fill the paintball tanks charge a flat rate per fill, it would make sense to get the larger tank since the price difference is not really an issue. If you own a 2nd larger tank with a fill adaptor, and portability is more important than total number of fills, then a smaller tank may make sense to carry in the field.

The Pros of the Ninja system
Ninja tanks are the most compact. The small tank will easily fit in a small backpack, gear bag, or in a larger plastic ammo box. This gives you the ability to keep all your air gun stuff organized in one location. If you don’t have a small portable tank you are stuck lugging around a large tank and fill adaptor. This can be overkill for an afternoon shooting session.

I like the ease of which the tank can be refilled, simply by connecting the fill source to the quick connect fitting on the small tank with no valves to turn. Ninja has some great accessories like the thread-protector and theMagnaCap which makes it kind of fun to use. They also sell a hose extension they call a fill whip that will make it easier to fill guns with, but the added volume will waste a little more air between fills.

BUILT IN REGULATOR
Ninja tanks have a built in regulator. The unit is custom built to your selected output settingspecifications. Custom output regulators are not an exact science. Each high output regulator is hand-built and tested to ensure consistent output pressures and fast flow rates. When a regulator is ordered, you must order these in even number psi increments. Example: 1200psi, 1400psi, 1600psi, 1800psi, 2000psi, all the way up to 3000psi.

When you request a certain output pressure on your regulator, be aware that this is the target pressure and the actual output pressure can swing a 100psi in either direction since again, this is not an exact science. Ninja will get as close to the desired output pressure as possible and its rare that Ninja encounters regulators with that much of a swing in either direction.

The order is hand built once the order has been placed. Since custom output regulators to do not use off the shelf parts, Ninja has to do substantial testing on the regulator to ensure it will output at the correct pressure and not have any issues. If there is an issue, they want to give their techs and engineers to fine tune the regulator and not rush the process. Ninja also hand builds each order as they come in so they do not have a bunch of cylinders sitting on the shelf in the warehouse getting old. Ninja receives shipments each week to ensure you receive the freshest bottles possible with freshly manufactured regulators.

THE BENEFITS OF FILLING FROM A REGULATED SOURCE
First, as long as the regulated output pressure on the tank is less than the maximum fill pressure, it is nearly impossible to over fill the gun. You simply open the valve and the pressure entering the gun stops at the regulators set point. This is a great feature if you loan your gun to other shooters, because you don’t have to worry about them over charging your gun. This regulated out put pressure guarantees you consistant fills, up to the point where the remaining pressure in the ninja tank falls below the regulated pressure. After the tank pressure falls below the regulated output set point on the regulator you can still charge your gun, but expect less shots per fill.

REGULATED TETHERING
This feature allows you to leave the gun connected to the tank, and shoot the gun. When you do this you will get many shots with out have to worry about recharging the gun all the time. Since the output pressure is regulated, you can shoot more consistently because you don’t have to worry about the bell curve that naturally occurs on non regulated air rifles.

The Cons of the Ninja System Again nothing is perfect, here are some of the negative aspects of choosing the Ninja system to fill your PCP air guns. Not a deal breaker for most people but there are a couple of things you should be aware of before choosing this solution. YOU ARE ORDERING A CUSTOM PRODUCT When you order the ninja solution you are making a custom order. you have the ability to choose from a combination of tank sizes, colors, and custom output settings. The regulators can not be adjusted to different output pressures so choose your regulated pressure choice carefully. Once you make the decision to order, and payment is made, the product is custom built to your specifications. This process can take 2-4 days to get through the process. This means if you make a bad purchase decision, you are stuck with it. The combination you selected is not something someone else may want. IT MAY BE HARD TO DECIDE ON OUTPUT PRESSURE This can be a tough choice since it can not be changed later. You need to do your research. We will provide some suggestions on some of the more popular PCP air rifles. THE FILL ADAPTOR DOES NOT INCLUDE AN AIR GAUGE
You must rely on the built-in air gauge on your gun if it has one. This is not super critical since the output is regulated.

THE GUN WILL FILL EXTREMELY FAST
Once the valve is opened, even cracked air will rush into your gun very fast. If you are used to filling your gun with larger tanks with more precise air flow control this will startle you the first few times you use the Ninja system. Some say you should fill a airgun slowly to avoid stress on the tank, if you agree with this than the ninja system may not be right for you and you should go with our AirHog solutions because they have flow restrictors integrated in some of the valves.

When a gun or any high pressure air tank is filled fast it heats up, as it cools back down to room temperature the pressure in the dank will drop. So if you are using the Ninja system, and want a precise fill without the pressure dropping as the tank cools off. After the gun is filled let it stay connected for a minute or two for the pressure to drop in the tank. During this time the as the pressure in the guns tank drops the regulator will allow more air to enter the gun.

KNOB IS HARD TO TURN
This makes sense because it has a lot of pressure to overcome. For instance your custom regulator is set to 2800 psi, to push that plunger down and over come the back pressure takes some force.

LACK OF AIR FILL PRESSURE CONTROL
With the air flowing into the gun so fast it is going to be very difficult to try and use this solution for trying to fill and stop at different pressures, you are pretty much at the mercy of the regulator to stop at a precise spot.

MAY NOT WORK WELL IF YOU OWN MORE THAN ONE GUN
If you have or plan on having more than one PCP air gun in the future, keep in mind this regulate is custom set when you order it and it cannot be changed later. This means if you intend on using one tank to fill multipal PCP air guns they need to operate at around the same fill pressures.

WON’T WORK WELL FOR SOME OF THE BIG BORE OR REGULATED GUNS
At this time the maximum regulated output pressure of the ninja regulators are 3000 psi. Some big bore air guns need to be filled to pressures above 3000 psi. This is mainly because it takes so much air to move large caliber pellets and slugs, and the reservoirs on the guns need to be small to keep the weight down. Some of the higher end PCP air guns have regulators built into the rifle. They in some cases will also accept fills of greater than 3000 psi. They do this to keep the tanks smaller and increase the shot count.

Conclusion
For the price, compact size of the tank, and the many places that will be able to fill it, we feel the Ninja tank solution will be embraced by many. We think this is a game changer for the PCP air rifles because it is priced $130 dollars lower than the previous fill solutions in this market.

Like the rest of the PCP fill systems, this is not perfect, and not for users who can only afford one tank that must be used for all their PCP air rifles. This product will shine for people who want to shoot tons of consistant shots from one location like a shooting bench. When tethered to a regulated system you can shoot for hours consistently only having to worry about loading pellets. Gone are the days where you had to keep track of how many shots you have taken on the current fill, or stopping to get up and fill the gun with air after every 30-40 shots.

* All air and fill calculations were made using Chairgun, which is available for free in the apple app store

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On this page you will find a one stop solution for the PCP air tank, regulator, and charging kit.  If your PCP air gun is filled through a male foster fitting this is would fill it.  Ninja tanks are regulated so make sure you match the custom set regulator to match your gun’s fill pressure.
Ninja Fill System Details
The Ninja products are both the lowest cost solution, and easiest tank to get refilled.  Because for all practical purposes it is a standard 4500 psi paintball tank.  Thanks to the popularity of the paintball sport , and the easy no brainer way this tank can be filled.  To refill this tank is as easy as connecting a female foster fitting (standard in the paintball industry) to the male foster fitting on the tank and turning on the air.  When you refill paintball tanks you don’t have to turn any valves like on other tanks, because the integrated male quick connect fitting is equipped with a one way check valve that is designed to let air enter in to the tank through the fitting, then holds it in the tank once the force of the incoming air is reduced to a lower pressure than the air currently in the tank.
Ninja 90/4500 regulated CF tank with pcp fill adaptor – color: Grey