DYI Standpipe

[Magma]

so i have an internal overflow on my tank with a 1.5" drain hole on the bottom of the tank, then goes into a ball valve to control flow into the sump. problem is its louder than all hell, so i looked into ways to silence it and seems like a stand pipe is the way to go.

my question is since its only a 35gal tank with a 1.5" drain hole should i keep the stand pipe at 1.5" or should i go bigger, or smaller?

keep in mind the overflow chamber is about 18" high and 3.5"x3.75" wide...

[sphelps]

Originally Posted by Magma

so i have an internal overflow on my tank with a 1.5" drain hole on the bottom of the tank, then goes into a ball valve to control flow into the sump. problem is its louder than all hell, so i looked into ways to silence it and seems like a stand pipe is the way to go.

my question is since its only a 35gal tank with a 1.5" drain hole should i keep the stand pipe at 1.5" or should i go bigger, or smaller?

keep in mind the overflow chamber is about 18" high and 3.5"x3.75" wide...

What kind of standpipe are you using, you shouldn't be using a ball valve unless you have more than one drain. With one drain and the proper standpipe it should be quiet and if you do have a ball valve it should stay wide open and you should only close it for maintenance.

[Magma]

dont have a stand pipe actually I thought making one could make this noise a lot less, its just an internal overflow with a hole in the bottom of the tank, which goes into the ball valve then down a 45 degree section into the sump.

[sphelps]

Ah IC. A durso is the easiest type to make and typically pretty quiet.




Pretty simple to make but the key is to reduce the pipe size after the standpipe. So If you have a 1.5" Bulkhead in place already you should make a 1.5" Standpipe. Typically you would then drop the pipe size to 1.25" below the bulkhead to the sump however since it's only a 35 gallon and your flow rate is going to be fairly low you should drop it to 1".
If a 1.5" Standpipe won't fit in your overflow a couple bushings in the bulkhead will allot for a smaller standpipe. You could go as small as 1" for the standpipe and 3/4" for the drain line below.

If the durso design is just too big for the overflow no matter what look into a stockman or HGB.

[sphelps]

Also just note that you need a 1/8" hole drilled in the top of the cap on the durso standpipe.

[Magma]

hmm good to know, think I will head out to the hardware store or red coral and see what I need for fittngs etc.

[sphelps]

Try and fit a 90 that will male socket on one end, this will help with clearance.

[Magma]

went out got 1.5" fittings no way in hell the 1.5" or even a 1" fitting will fit in this overflow which sucks..so now i dunno what to do, i guess look into the stockman and HGB style, anyone have some good info on those?

[hillegom]

Originally Posted by sphelps

Try and fit a 90 that will male socket on one end, this will help with clearance.

A street elbow, here is a link to a pic.

http://www.fdsons.com/34x12-cpvc-red...5-p-38134.html

[Magma]

Originally Posted by hillegom

A street elbow, here is a link to a pic.

http://www.fdsons.com/34x12-cpvc-red...5-p-38134.html

wont fit no way no how.