Need help with overflow plumbing

[Ryan_Lap]

Originally Posted by Raf

not sure i understand your drawing. those are both drain lines?

Yes, both drain lines.

[reefwars]

what size plumbing are you using now?? you almost have a herbie set up now just needing the gate valve, you could also put a valve on your return and throttle it back so the stockman can keep up.

[Ryan_Lap]

The plumbing for both is 1 inch. The herbie won't work as it's currently set up because the emergency makes noise because the primary meets up with it. I also do have a ball valve on the return. The stockman method is still too noisy for my liking so I'm trying to eliminate it. I think I may have to change the plumbing somehow so I can use the herbie

[Raf]

You could drill another hole into the overflow on the side and higher up, then plumb a 90 elbow into that bulkhead in the overflow....that way it would act as an emercency overflow if the main drain would become clogged. You would just run rigid line down to the sump and over the edge...no drilling of sump required...

[reefwars]

Originally Posted by Ryan_Lap

The plumbing for both is 1 inch. The herbie won't work as it's currently set up because the emergency makes noise because the primary meets up with it. I also do have a ball valve on the return. The stockman method is still too noisy for my liking so I'm trying to eliminate it. I think I may have to change the plumbing somehow so I can use the herbie

are your overflows pipes glued in your overflow box?? iff not just remove the primary and the emergency and make it so the primary goes up just past half way and make your emergency about 2 " below your overflow box teeth that ways you can use your gateevalve to keep the water line high and thus no sound of water entering the overflow box.if they are glued then i would condider draing the overflow box and adding new pipes using unions or couplings

[reefwars]

your return is plumbed over the back oor closed loop??

[mark]

If I'm clear, you have an external overflow with 2 holes.

You're just about already a classic Herbie; just remove the Stockman, cut off the lower drain line from the Tee, adjust the valve so you don't flow anything into the emergency. Since the emergency is normally dry you don't need anything to silence it.

Calculator at bottom of this link (Beananimal) should give you idea of max flow on a 1"

[Raf]

Also, keep in mind that the schedule size of 1" pipe can alter the internal diameter dependent on wall thickness and hence the amount of water it can drain at a maximum....