Airgun Theory Regulator adjustment questions

[SteelFly]

generally you would adjust the regulator up or down not you you need to add washers for a 150 PSI?

It's a stock reg, no option to adjust

 

[SteelFly]

@SteelFly Knowing as opposed to guessing is a great approach. However, you are not tinkering with a "live grenade" by adjusting a regulator to a higher set pressure. As for your question regarding adding or subtracting bellville washers. I personally would not add or subtract the washers. I recommend sticking with the number of bellvilles that the manufactuerer recommneds.

The orientation of the washers can affect set pressure ranges as well. When I say orientation, I am speaking of how the concave /convex surfaces of the washers interact with one another in series (how they are stacked in pairs). I am not the most knowledgeable person on the topic so I will stop my explanation here and defer to more knowledgeable members who are proficient in this area.

Me either, I actually already blew the internal seals on my Sig Virtus previously while ummm, tinkering.
Kinda like a chimp just pulling buttons and pushing levers..

Not trying to do that again TBH..

Now at least I got a method to test out PSI BEFORE I blow a new breathing hole somewhere inside my AG...

 

[Ezana4CE]

@SteelFly I got my first crash course in regulator maintenance a few years ago when I purchased a used air rifle with a creeping regulator. I changed some o-rings and that didn't fix it. I then took it apart (bellvilles and all) and was in over my head so I purchased a Huma replacement reg and haven't had to bother with it since. After letting an Edgun sits for several months, I had reg issues with it. With a bit of instruction I was able to manage a partial rebuild on the OEM reg and it has been problem free since then.

For me it took trying and making mistakes in repair attempts. This lead to questions, which lead to many thread and post searches and finally questions that lead to answers from knowledgeable members. I'm not a handy person so I felt that I'd accomplished a little something in my learning. With that said, if you're willing to take some time you can learn some of this stuff too. I think it's a good idea to buy a re-build kit for a regulator at the time of purchasing a new regulator so that you have the necessary o-rings and piston valve seat to replace them when they wear out. Sometimes I'll keep a backup regulator in the event that I don't have time or don't want to take time to rebuild one. What type of reg did you order? Hope some of this helps you some.

 

[Hateful McNasty]

Not intending to be snarky
Just practical
Generally speaking, reading the gun or regulator manufacturer's instructions on how to adjust the regulator is the best way to start.
just my .02 scents
Edward

How many just?

 

[SteelFly]

@SteelFly I got my first crash course in regulator maintenance a few years ago when I purchased a used air rifle with a creeping regulator. I changed some o-rings and that didn't fix it. I then took it apart (bellvilles and all) and was in over my head so I purchased a Huma replacement reg and haven't had to bother with it since. After letting an Edgun sits for several months, I had reg issues with it. With a bit of instruction I was able to manage a partial rebuild on the OEM reg and it has been problem free since then.

For me it took trying and making mistakes in repair attempts. This lead to questions, which lead to many thread and post searches and finally questions that lead to answers from knowledgeable members. I'm not a handy person so I felt that I'd accomplished a little something in my learning. With that said, if you're willing to take some time you can learn some of this stuff too. I think it's a good idea to buy a re-build kit for a regulator at the time of purchasing a new regulator so that you have the necessary o-rings and piston valve seat to replace them when they wear out. Sometimes I'll keep a backup regulator in the event that I don't have time or don't want to take time to rebuild one. What type of reg did you order? Hope some of this helps you some.

It is, yeah I'm currently experience a similar feedback loop myself.

Hypothesis - Destroy - Learn - Fix - Hypothesis 2.0 - Learn -

Hopefully I continue to hurdle the inevitable Destroy portion of DIY RnD.

The regs I purchased were 2 cheap-0 generics.
The adjustable one I found to be quite frustrating as the adjustment screw sits INSIDE the tank, and there's no outward indication or even an estimate on pressure change and it came with no instructions..
And I have a band pump!
So filling, check high, degass, dis assemble, adjust, re assemble, re hand pump at least 15Bar, check still high(or now low), degass, dis assemble, adjust again, ETC again and again was Hell!
I finally figured it out somewhat myself by assuming that all the way closed = 0 PSI Out, so fully open = Max out @ 3Bar.
So halfway = 1,500PSI
1/4 turn = 5,250PSI and ETC

Or 1/4 the total # of possible full rotations the bolt COULD make,
Not physically 1/4 rotation of the bolt itself.

I sent that one back due to the complexity and stuck with the standard version which I am happy with.
Also because the adjustable one is the one I blew my internal seals out with.

And yeah I have also acquired a few parts and rebuild kits as well so hopefully when I discover the math on what modification = what result, they may be of more use.


HPA Tank Regulator, Input 4500psi... https://www.amazon.com/dp/B0DB83Y4VS?ref=ppx_pop_mob_ap_share

Aopkeo HPA Adjustable Regulator... https://www.amazon.com/dp/B0CKW189J2?ref=ppx_pop_mob_ap_share

 

[Ezana4CE]

It is, yeah I'm currently experience a similar feedback loop myself.

Hypothesis - Destroy - Learn - Fix - Hypothesis 2.0 - Learn -

Hopefully I continue to hurdle the inevitable Destroy portion of DIY RnD.

The regs I purchased were 2 cheap-0 generics.
The adjustable one I found to be quite frustrating as the adjustment screw sits INSIDE the tank, and there's no outward indication or even an estimate on pressure change and it came with no instructions..
And I have a band pump!
So filling, check high, degass, dis assemble, adjust, re assemble, re hand pump at least 15Bar, check still high(or now low), degass, dis assemble, adjust again, ETC again and again was Hell!
I finally figured it out somewhat myself by assuming that all the way closed = 0 PSI Out, so fully open = Max out @ 3Bar.
So halfway = 1,500PSI
1/4 turn = 5,250PSI and ETC

Or 1/4 the total # of possible full rotations the bolt COULD make,
Not physically 1/4 rotation of the bolt itself.

I sent that one back due to the complexity and stuck with the standard version which I am happy with.
Also because the adjustable one is the one I blew my internal seals out with.

And yeah I have also acquired a few parts and rebuild kits as well so hopefully when I discover the math on what modification = what result, they may be of more use.


HPA Tank Regulator, Input 4500psi... https://www.amazon.com/dp/B0DB83Y4VS?ref=ppx_pop_mob_ap_share

Aopkeo HPA Adjustable Regulator... https://www.amazon.com/dp/B0CKW189J2?ref=ppx_pop_mob_ap_share

@SteelFly I wouldn't say I destroyed the reg. I disassembled it without the knowledge on how to rebuild it and reinstall the bellvilles. I know more now, but since I purchased another reg it's been working well. If need be I am a lot more confident to rebuild the original reg if I need to. I still have it. What I have learned from that episode and subsequent ones gives me more insight into regulator issues.

I don't know anything about the type of regs that you posted links to. Mine are internal regulators.

 

[AtlasAirguns]

Mentionable offense: if you don't de-pressure you will imprint on the delrin disk (typically what is used in the seal area). Taking a simple couple shots to slightly decrease pressure is a hack often used, but I advise against this because it inevitably causes the same formation of divot in the delrin. So for my work, I always depressure the platform completely. Plus it gives me a chance to check other things.

All the best, Atlas