pvc and plumbing question

[RyanPlanted]

im going to have a closed system filter and the pump im thinking about using has smaller threads than what im plumbing with. Would it be ok to just downsize the pipe to the threads of the pump and then after the pump make it go back up. For those who dont get what im asking heres an example.

3/4 inch pvc from tank>3/4 inch to 1/2 inch reducer>pump>3/4 inch to 1/2 inch reducer> 3/4 inch pvc back to tank.



Could the pump still work and pull water through correctly even though i would be downsizing at the pump ports.

 

[blaxsun]

You will effectively be limited to the amount of flow that can pass through the 1/2" diameter section of the pipe.

 

[RyanPlanted]

You will effectively be limited to the amount of flow that can pass through the 1/2" diameter section of the pipe.

yeh but to how much i have a 500 gph pump 70 watts but with the height and filter system its pushing about 300 gph. Should i just downgrade all my fittings to 1/2 inch. but at the same time wouldnt 3/4 inch allow for more water flow.

 

[blaxsun]

The theoretical maximum is 840 Gph through a 1/2" and 1,410 Gph through a 3/4" diameter.