Other Regulator breaking in?

[MOE.LB]

Hi everyone, after I bought my rifle my regulator would idle at 110 bar but would settle to around 100 bar after a few shots. Now that I have shot over 500 pellets it seems my regulator has been steady at 100 bar. Usually it would go from 110 to 100 from a 200bar full cylinder to 150 bar on the cylinder.

Not trying to complicate it but what I'm trying to say is it's 100 bar from topped off cylinder till it starts to struggle at around 120 bar and below on the cylinder (slow stabilization)

Is this normal? Was my rifle intended to be at 100 bar? And it's just the regulator settling in? Do factories set a buffer on new rifles or something.

 

[Motorhead]

A regulators SET POINT stability is pretty much 100% based up the quality / design of the seat parts ... which is how "clean" being free of machined surface flaws on both surfaces & them mating perfectly parallel to one another.
Size of the seat orifice and/or the sealing margin diameter.
Type intake the Reg utilizes ( Side intake being HP around seat / end of spool flowing then down center of spool to plenum when open.
Or Center intake being at & threw seat when open and around spools end , then into spools center to plenum. )

Yes some regs ( Generally side intakes designs ) don't set point hold as stable as the center intake style/s as HP tank pressure changes.

 

[MOE.LB]

Hi

A regulators SET POINT stability is pretty much 100% based up the quality / design of the seat parts ... which is how "clean" being free of machined surface flaws on both surfaces & them mating perfectly parallel to one another.
Size of the seat orifice and/or the sealing margin diameter.
Type intake the Reg utilizes ( Side intake being HP around seat / end of spool flowing then down center of spool to plenum when open.
Or Center intake being at & threw seat when open and around spools end , then into spools center to plenum. )

Yes some regs ( Generally side intakes designs ) don't set point hold as stable as the center intake style/s as HP tank pressure changes.

Hi Motorhead, thanks for your time on explaining this. Hence what I understould since I'm on the cheaper side, I'm probably a side intake? Hence the instability and setting in at 100 bar after the break in? Sorry I'm trying to digest

 

[nervoustrig]

Yes, what you observed is fairly common with a new regulator as it breaks in. The valve seat consists of plastic part squeezing up against a metal part. In the early going, little imperfections in their mating surfaces allows the pressure to slowly creep up until they eventually squeeze hard enough to fully halt the transfer of air. After they have cycled open and closed a number of times, the plastic part takes on an imprint and the regulator will become more stable.

For what it’s worth, the setpoint will usually increase slightly during the break in period. You experienced the opposite, and if I were to hazard a guess, it’s probably the result of some setting of the spring. But suffice it to say I don’t think it’s anything to be concerned about.

 

[MOE.LB]

Yes, what you observed is fairly common with a new regulator as it breaks in. The valve seat consists of plastic part squeezing up against a metal part. In the early going, little imperfections in their mating surfaces allows the pressure to slowly creep up until they eventually squeeze hard enough to fully halt the transfer of air. After they have cycled open and closed a number of times, the plastic part takes on an imprint and the regulator will become more stable.

For what it’s worth, the setpoint will usually increase slightly during the break in period. You experienced the opposite, and if I were to hazard a guess, it’s probably the result of some setting of the spring. But suffice it to say I don’t think it’s anything to be concerned about.

I'll ignore it i guess for the time being... if it gets lower, then i have to manually adjust the regulator back to 100 or 110 bar based off what i feel is best. but for the next 2000 shots i'll not give much into it.

 

[MOE.LB]

Yes, what you observed is fairly common with a new regulator as it breaks in. The valve seat consists of plastic part squeezing up against a metal part. In the early going, little imperfections in their mating surfaces allows the pressure to slowly creep up until they eventually squeeze hard enough to fully halt the transfer of air. After they have cycled open and closed a number of times, the plastic part takes on an imprint and the regulator will become more stable.

For what it’s worth, the setpoint will usually increase slightly during the break in period. You experienced the opposite, and if I were to hazard a guess, it’s probably the result of some setting of the spring. But suffice it to say I don’t think it’s anything to be concerned about.

Hi Nervous, I actually discovered that my gun is consistent at 100 bar on the regulator. seems that the reason i was getting 110 bar was the fact that whenever the shop used their tank to fill my rifle they did it too fast leading to heat buildup in the cylinder. i confirmed this by using my new tank to replicate. If i did it slowly and didn't make the gun heat up it would do 100 bar. if i did it quick it would heat up and do 105 110 bars. but once it cools down it did go back to 100 bar or so. the gun is consistent and making very tight groups so the regulator is consistent it seems also.