<< Previous Topic | Next Topic >>  

How Many Fills from a 4500psi 90 cubic inch Tank?

December 1 2017 at 11:22 PM
Larry  (Login Nalajr)

Hey all,

I looked at the post talking about a SALE on these Benjamin tanks at Midway USA......These are the kinds of tanks I have been seeing for sale on some of the Paintball board Classifieds. I think they are the same capacity and I know they are 4500psi cause they list it in the description.

Now, what I am wanting to know is how useful a tank of this size and pressure would be with a basic Benjamin Marauder or other similarly performing PCP rifle.

In the listing for this tank, the description says you can take it with you and fill it with a SCUBA tank. Is that true? I didn't think SCUBA tanks were 4500psi.

Please excuse me on these questions as I have never, ever had any experience with this kind of stuff.

Lets say I fill my Marauder at first with this tank. Then I shoot it until the velocity drops off. When I go to top it back off, how many times could I do this with that size tank after I filled it up initially? Would it give me 3 top offs, 5, 10, what do you think it would be?

I'm just trying to gauge whether I should get a tank like this when I see a great deal on a USED one to get into the PCP game.

Thanks all.

 Respond to this message   
(Login icufuzz)

Re: How Many Fills from a 4500psi 90 cubic inch Tank?

December 2 2017, 12:43 AM 

I get almost seven (top off)fills for my Marauder from my 90 cu in tank. But I have never filled it from another tank. I just go to a paint ball shop to get the tank filled.

 Respond to this message   
(Login garczar)

Re: How Many Fills from a 4500psi 90 cubic inch Tank?

December 2 2017, 7:00 AM 

That's about 14cu/ft. Use the fill calculator at the bottom of the page. Using it gives 9 fill based on filling to 3000 and refilling at 2000. So 7-10 fills is in the ballpark.

This message has been edited by garczar on Dec 2, 2017 7:04 AM

 Respond to this message   
Doug Wall
(Login DougWall)

Re: How Many Fills from a 4500psi 90 cubic inch Tank?

December 2 2017, 7:46 AM 

I think that they meant to say that you could refill it from a SCBA tank (4500psi), not a SCUBA tank(3000psi). If you use a SCUBA tank, you won't any any full refills after the pressure drops below the 3000, or so, fill level of the gun. If you're willing to go with lower fill levels, it can work. I have a Maximus (2000 psi fill level), and calculated 80 some refills from a 3K psi SCUBA tank. I also have a SCUBA pony tank that's easy to carry around, that I can get about 7 refills from. If I were using a 3000 psi fill gun, I wouldn't be getting any full fills.

 Respond to this message   
Allen S
(Login SRGTO04)

Re: How Many Fills from a 4500psi 90 cubic inch Tank?

December 3 2017, 1:17 AM 

Here is a link for a tank fill calculator


 Respond to this message   
  << Previous Topic | Next Topic >>  

Airgun Calculators    Num of fills calc    Capacity Calc

******** Kalibrgun High quality, superb Accuracy, outstanding Value. ********

JK's Airgun Forums, moderators, and administrators are not responsible for any problems that may occur from reading or using content posted on this forum, as they are the exclusive responsibility of two parties: the person who posted it and the person who acted on said posted information.Use of our forums by people under 18 years old is allowed only with legal guardian(s) present.