They take a long time to open, you would have lost all of the gunge by the time they'd opened fully!
I would be tempted to build something a bit more homemade. A lot of gungetanks have a bathtub style arrangement where pulling the chain pulls the plug out of a hole. Why not automate that? I think that an air compressor and air ram with that kind of arrangement would be better than trying to go with an electric motor as it will be much faster.
Those valves are used on the grey and blackwater tanks of pretty much camper (caravan for you non-US Americans) on the road. I'm not sure why you would think a valve designed to hold in, then let 50+ gallons of shitwater come out of a 3 or 4" hole would be slow or otherwise inappropriate for dumping some slime out of a box...
The product description says that they take 5-10 seconds to open. That's pretty slow! Most gungetank gungings only last a few seconds, the valve probably won't be open before the gunge has all gone.
Tilly said: The product description says that they take 5-10 seconds to open. That's pretty slow! Most gungetank gungings only last a few seconds, the valve probably won't be open before the gunge has all gone.
it takes at least a minute in my tank - I can make it take longer too. thick gunge and loads of it
The gate valves would probably work but over complicates things. Its something else to go wrong have an air or electric valve. When we built our tanks we looked at these mechanisms and there was a thread either on here or fetlife about gunge tank valves. Another issue is you really don't want to be mixing electric and gunge (water) together. Timing wise, 5 - 10 secs is not a major issue, our tank certainly runs well over a minute, particularly with thicker gunge. The other issue is if you want to close the valve again I assume it will take as long to close the valve.
Tilly said: The product description says that they take 5-10 seconds to open. That's pretty slow! Most gungetank gungings only last a few seconds, the valve probably won't be open before the gunge has all gone.
it takes at least a minute in my tank - I can make it take longer too. thick gunge and loads of it
wambob said: They're "electric" and run off a 12v battery. They're also explicitly designed to be used to hold back water.
You're not going to fucking get electrocuted.
Not everyone is bright enough to use a battery !!
We did an event a while back with another Gunge Tank as they needed 2 and the operator had lights shinning into the tank from the top. They were 12v so all safe, however they were being run from a 240v transformer that was covered in gunge by the end of the day.
We might actually be selling our newly refurbished tank in the not to distant future. Not used since we replaced the Perspex sides and painted it last year.
Love you, too
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