Spherical valve

Yes I have. Is that your only question or is there something in particular you would like to ask?

Is this a manual valve you have - like a petcock? Or something actuated? Is the "valve" you have in fact a valve or is it strictly a metering/measuring device?

Are you measuring medicine, gunpowder? (just curious)

My stepfather used a valve rig for gunpowder. He built his own 50 cal longrifle.

Hi TC what is a spherical valve ? always thought ball valves are spherical, then how do you use for measurement ?

In fact in our machines, we have a volumetric (or some times gravimetric) feeders that regulate flow, However no valves per-se. Close the feeder and it is a valve.

it was similar to this.............

except instead of being spring loaded there was a half turn handle such as on a petcock.

Hi,

It is going to be pneumatically actuated and it is mostly used for metering. Do you have any idea, how good this kind of valves are metering purposes? I am using it to meter powder. Thank you.

Depending on the velocity and abrasiveness of the powder, the life of the seat material may not give good life.

In the fire service, Dry powder fire extinguisher systems, used on vehicles, use ball valves to allow the powder in the large (500 lbs) container to travel to the discharge locations. The powder is pressurized, but otherwise seem the same. BTW, the fire service uses almost nothing but ball valves.

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