Sump / Gate Valve question

[dreamcatcherr9]

Forgive the ignorant question, trying to learn.

Installing gate valve to plumbing line for sump.

Gate valve for return pump line to tank?

Can you also use a gate valve for inlet line to shut off water flow to sump (for maintenance) if ever wanted??

Thank you.

 

[fermentedhiker]

If your return pump isn't adjustable then yes you would put a valve on the output of the return pump so you can adjust the flow as needed. If you have a DC pump you probably don't need one as their controllers will let you adjust there flow directly.

A valve on the return isn't necessary for maintenance as you just turn off your return pump. Some plumbing designs do use a valve on one of the drain pipes for tuning the drain. Look at Herbie or Bean animal drains to understand why they use a valve

 

[sp1187]

I have one on the in coming and out going. as stated in coming is to tune the drain. out going is for maintenance on the sump. when you turn your return pump off, can close the valve to prevent back flow in to the sump. easier to clean with less water in it.

 

[dreamcatcherr9]

I have one on the in coming and out going. as stated in coming is to tune the drain. out going is for maintenance on the sump. when you turn your return pump off, can close the valve to prevent back flow in to the sump. easier to clean with less water in it.

If you have a gate valve on both incoming and outgoing, do you close both during maintenance? And for your return pump, is it a standard (not DC controllable)?

 

[theMeat]

Not asking would make you ignorant

if you have a single drain system you don’t need a valve on drain.
If your AC power return pump is sized the way you want it you don’t need a valve on return neither. Think it’s a better idea to have a properly sized pump, then to put a valve. If you have a dc pump you don’t need a valve because output is dc power adjustable.
Make sure to have siphon brake on both drain and return to allow for enough room in sump when power goes off and water drains diwn

 

[dreamcatcherr9]

Not asking would make you ignorant

if you have a single drain system you don’t need a valve on drain.
If your AC power return pump is sized the way you want it you don’t need a valve on return neither. Think it’s a better idea to have a properly sized pump, then to put a valve. If you have a dc pump you don’t need a valve because output is dc power adjustable.
Make sure to have siphon brake on both drain and return to allow for enough room in sump when power goes off and water drains diwn

Can you explain/ give me more details on the siphon break?

 

[sp1187]

If you have a gate valve on both incoming and outgoing, do you close both during maintenance? And for your return pump, is it a standard (not DC controllable)?

I just close the return side. my return is lower than my overflow box, so it's still back flowing after the water quits going through the overflow.
I have a DC.
https://www.bulkreefsupply.com/syncra-sdc-9-0-controllable-pump-1000-2500-gph-sicce.html
the return pulses, instead of being constant, creating a wave action.

 

[theMeat]

Can try to explain but seeing it in action would be better. At fellow reefer house or lfs or video....
On return going up into tank, just below display tank water level you drill a small hole in pipe. When you turn offf pump or power goes out water will start going down via siphon. It will continue to go down until it gets to that small hole you drilled which will allow air to get in and break the siphon. How much water goes down will raise the water level in sump. If water fills too much you will have a flood. You determine how much water goes do wn and subtract it from the height of top of sump/overfil/flood, and make that your sump max fill line