Plumbing kit question

My plumbing kit came with a 1.25" drain pipe that's reduced to a 1" bulkhead. What purpose does the reduction serve? Thanks

 

Anyone?

 

because 1" fittings are cheaper than 1.25. it is only an option. you really want the leargest drainage hole possible as it is not under pressure and is running via gravity where as you can have a smaller inlet hole as it is being pushed with pressure. all depends on what flow you are going to have and what size fittings you are wanting to use

 

If it is an AGA plumbing kit it came with 3 bulkheads. One is not needed, deciding which on that is not needed depends on your hole sizes.

As for the reduction, do you mean the bulkhead reduces to 1" or the pvc piping reduces to fit a 1" bulkhead?

I know I have 1 1/4" ID tubing on the drain bulkhead, so i am not sure what part you are asking about.

 

I have no experience with plumbing but from what I've read about beananimal setups it is the opposite. Having too large piping will result in a water falling sound while small piping with vacuum suction results in silence.

An small example is if I start a gravel pump and put the outlet submerged in a bucket it is completely silent.

 

It's a Deep Blue plumbing kit. The 1.25" Durso type drain tube has a reduction slip fitting at the bottom that reduces it to 1"- and inserts in to a 1" bulkhead. The tank is a Deep Blue 75 Edge. There are a total of 2 bulkheads- one 1" and one .75".

New to this and trying to wrap my brain around the plumbing aspect as I'm planning on setting up and filling up with water soon. How does a bigger pipe reduced in to a smaller fitting effect flow? I'm thinking it should speed it up right? -As opposed to it just flowing straight down through a 1" pipe and a 1" bulkhead.

 

That type of overflow is different.

You use valves to control the flow so no air is sucked in. You also have an emergency line that is always open.

 

Ok look up a durso stand pipe. The reason a 1.5" reduces to a 1.25" or a 1.25" to a 1" is purely for sound. If you have a 1" durso on a 1" bulkhead, it will gurgle loud. I have no idea why, it's just something they figured out when using standpipes in overflows.

 

And also, what you should consider when trying to figure out what size pump to use for your return is your drain bulkhead only. Nothing else should matter. As long as you don't exceed the capabilities of your size bulkhead, you'll be ok.

 

yes in a beananimal overflow a siphon will have more flow but yet a larger tube will have a stronger siphon and be as quiet but have more flow. the tube size is related to how much flow there will be. the original post didnt mention the beananimal overflow so i was basing my response on a basic overflow. there are many overflow designs all of which are dependent on the system in use