Schematic of a kunkle...

[Numero Uno]

http://www.littlejohninc.com/pdfs/KunkleDryBulk.pdf

So if you want to learn more about the guts...

 

[Greenie]

note, that pic is displayed showing the valve used in the "pressure" application, it would actually be flipped if installed on a waste tank for a vacuum application.

also note the bulk of these valves are used for "dry material" handling, there is no moisture present, and this would be doubly so if the valve was used in a pressure application as any possible moisture would only enter the valve briefly when it "chirped" open.

when installed in a vacuum like on a waste tank the guts of the valve are always subject to moisture, hence some consideration for lubrication from time to time.

 

[Lee Stockwell]

In a vacuum situation the moisture inside the waste tank should not be a big factor if plumbed ideally, as it will burp IN hopefully DRY air from outside the tank. The inlet could be further plumbed to make this more certain. However give Murphy his due...moisture will get in it somehow.

Dale Collins a couple of years ago showed us at his shop how the K worked better with its air inlet routed thru a second "conventional" relief valve to moderate its cycling.

 

[Greenie]

I believe the perforated pvc cap accomplishes this same moderation to the cycling, at least they seems to work better with the cap in place.

Every valve leaves here with a cap.

 

[Shawn Forsythe]

If you want to see even more...


Here's Kunkle's own instruction manuals for the 215V Valve.

http://www.cccsupply.net/kunkle/install ... ration.pdf

http://www.cccsupply.net/kunkle/maintenancerepair.pdf"