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[JDJP]

So this is for an 80 gal tank with a 5' head height. I have a danner 9.5 (950gph) with a 5' head i think it drops to around 700gph. Its 3/4" coming out of the pump and i necked it up to 1"

I have a gate valve that i plan to use to adjust the flow. I also decided to use about a 12" piece of 1" silicone tubing from the pump to the gate valve.

So #1 i thought i read somewhere that you dont want the gate valve to close to the pump? I dont see how this would make a difference, but is this true?

#2 am i going to have an issue with pressure on the silicone pipe if i have to adjust the pressure with the gate valve?

Thanks for your help.

 

[redfishbluefish]

I'm unable to answer question #1.....I've never heard that about a valve too close to the pump.

With question #2, you're still talking about low pressure and most likely will be OK. However, to add assurance to the fittings, try using nylon hose clamps.....I know McMaster Carr carries them:

Note that you'll need a clamp size of the OD of the tubing.....not the ID!

 

[JDJP]

I'm unable to answer question #1.....I've never heard that about a valve too close to the pump.

With question #2, you're still talking about low pressure and most likely will be OK. However, to add assurance to the fittings, try using nylon hose clamps.....I know McMaster Carr carries them:

Note that you'll need a clamp size of the OD of the tubing.....not the ID!

Thanks. That makes me feel better. I was asleep last night and pictured the silicone blowing up like a balloon.

 

[ludnix]

I used the silicone tubing as well and got the nylon clams redfishbluefish posted from BulkReefSupply.

I have been happy with the setup and I think if you get the clamps on you'll be safe to adjust. You might also consider making a T and having the valve on that aswell. The T can drain to the sump and then you don't restrict the pump flow with the valve but can still adjust the pressure in the display.