Is this plumbing right ?

[D-Nak]

If you can swing the extra cost, go with gate valves instead of ball valves. They offer a finer degree of adjustment, which is nice when you're trying to adjust a flow rate. I also see people with both a ball and gate valves in tandem. This way you can use the gate valve for adjustments, and the ball valve to quickly turn on and off the flow, and not lose your "setting" on the gate. This is more for convenience than a requirement. I only have gate valves, and I've never had to completely turn off the flow.

 

[busterr]

You will definitely want to put a ball valve on the return so you can adjust your flow. On my 90g AGA with the Megaflow overflow a mag9.5 was too much and caused it to make a lot of noise. Was able to dial it back with the ball valve and now it is much quieter.

put a T on your return pump of the T put ur ball valve were it dumps back in to the sump. that way you are not restricting the pump and run the risk of burning it up

 

[busterr]

Sorry forgot to add if you put the T like that you can slow down your return flow that way

 

[FRED0]

I have valves on my drains and have never had problems. What do boilermakers know about pipefitting anyway? LOL