Snowpeak PP700: Fill Port Valve Keeps Springing Leaks: Got a Solution? 🤔

[JungleShooter]

PP700:​

Fill Port Valve Keeps Springing Leaks:​

Got a Solution?️​

Sometimes, without any particular external reasons, it just goes pfffffft, and all air is gone.

Has happened 4 times in the last couple of months (about 10 airtube fillings worth of shooting).
I keep replacing the o-ring, and everything seems back to normal. Till the next pfffffft.
I'm dumbfounded! Or maybe just dumb.

.22cal
19.5FPE power
Huma reg


Thanks,

Matthias

 

[nervoustrig]

The fill port O-ring is a common source of leaking in SPA PCPs.

It is too soft so it eventually extrudes into the gap formed by the flat on screw #51. Replace it with a 90 durometer. The OEM size is a M1.5x5 but a -008 works equally well in this application.

Might want to also check that there isn’t a burr at the opening of the tapped hole that could be slicing the O-ring.

If it were to continue to be a problem, consider replacing the screw but file a smaller flat on the threads so the O-ring doesn’t have such a large gap to extrude into.