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Using the Planet Bike Red Zeppelin Inflator with Schrader valves

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Using the Planet Bike Red Zeppelin Inflator with Schrader valves

Old 04-14-21, 07:11 PM
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sovende
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Using the Planet Bike Red Zeppelin Inflator with Schrader valves

Iíve been going thru my under seat bags in preparation for the upcoming season. In one I found a Planet Bike Red Zeppelin CO2 inflator. Fortunately, Iíve never had the occasion to use it while out on a ride . I was checking it out an saw that itís threaded for both Schrader and Presta valves. What I donít see is anything that would depress the ďpinĒ of the Schrader valve to allow the CO2 to inflate the tube. Am I missing a part or am I wrong to believe that the pin needs to be depressed to allow the tube to fill?
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Old 04-16-21, 11:57 AM
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Originally Posted by sovende View Post
Iíve been going thru my under seat bags in preparation for the upcoming season. In one I found a Planet Bike Red Zeppelin CO2 inflator. Fortunately, Iíve never had the occasion to use it while out on a ride . I was checking it out an saw that itís threaded for both Schrader and Presta valves. What I donít see is anything that would depress the ďpinĒ of the Schrader valve to allow the CO2 to inflate the tube. Am I missing a part or am I wrong to believe that the pin needs to be depressed to allow the tube to fill?
The only springs in a Schrader valve hold the plunger shut, so enough pressure headed in from outside should blow past it like it's an overpressure relief valve and inflate it just fine. If anything it's a plus- once the pressure on both sides equalizes the spring will close it, with no pressure loss as the inflator is removed. Depressing the pin on inflation mainly serves simply to open the airway to maximum size for flow rate purposes.
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Old 04-16-21, 06:48 PM
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The pin needs to be depressed. There may be some little innard that gets turned around.

Presta valve
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Old 04-17-21, 04:32 PM
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Originally Posted by Shay Howe View Post
The only springs in a Schrader valve hold the plunger shut, so enough pressure headed in from outside should blow past it like it's an overpressure relief valve and inflate it just fine. If anything it's a plus- once the pressure on both sides equalizes the spring will close it, with no pressure loss as the inflator is removed. Depressing the pin on inflation mainly serves simply to open the airway to maximum size for flow rate purposes.
I emailed Customer Service at Planet Bike and the woman that replied said pretty much the same thing . As I had told her, my experience with floor pumps was that the pin had to be depressed to allow air to fill the tube. It seems that the pressure generated by the CO2 cartridge is much higher than that generated by a floor pump. I will be testing the Planet Bike inflator to ensure proper function but it seems that my Red Zeppelin inflator is NOT missing any components
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Old 04-17-21, 07:34 PM
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Originally Posted by sovende View Post
It seems that the pressure generated by the CO2 cartridge is much higher than that generated by a floor pump.
I think that the pressure - gas in equilibrium with liquid - is something like 850 psi at 70į F.
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Old 04-17-21, 08:02 PM
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Ah, I hadn't thought about the CO2 aspect. Good to know.
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