Return manifold- ball valve after T?

[User]

Hi guys

Just got done doing a test of my plumbing- Tee of the 1.25” return to a 1.5-1” reducer, 1” ball valve (to shut off manifold) to a 1” ‘manifold’ with 2 outlets - one 1” gate (fuge), and 1x 0.5” ball (cryptic fuge).

I get zero flow to the cryptic fuge at the end of the line. Also had to really power up the pump to get the fuge to fill. To the point I think my overflow box won’t keep up, so that’s impractical.

I did however just notice that I forgot the gate valve after the Tee. At this point I’m assuming it’s critical for providing back pressure to send water down the manifold- right? No way of getting this working without one, I assume.

Thanks guys

 

[JoshH]

Hi guys

Just got done doing a test of my plumbing- Tee of the 1.25” return to a 1.5-1” reducer, 1” ball valve (to shut off manifold) to a 1” ‘manifold’ with 2 outlets - one 1” gate (fuge), and 1x 0.5” ball (cryptic fuge).

I get zero flow to the cryptic fuge at the end of the line. Also had to really power up the pump to get the fuge to fill. To the point I think my overflow box won’t keep up, so that’s impractical.

I did however just notice that I forgot the gate valve after the Tee. At this point I’m assuming it’s critical for providing back pressure to send water down the manifold- right? No way of getting this working without one, I assume.

Thanks guys

You would be correct in that assumption. Manifolds run off a return really need something to form back pressure in order to direct flow towards the manifold itself. and FWIW a gate valve would be the best way to go about it

 

[Flippers4pups]

You would be correct in that assumption. Manifolds run off a return really need something to form back pressure in order to direct flow towards the manifold itself.

One before the manifold and one after helps greatly to manage pressure on the manifold.

 

[JoshH]

One before the manifold and one after helps greatly to manage pressure on the manifold.

Great thought, I plumbed my manifold with its own pump so my expertise is only via research when it comes to ones plumbed from then return itself. And it's through that research that brought me to the conclusion a separate pump was the best way to go for myself anyway

 

[Flippers4pups]

Great thought, I plumbed my manifold with its own pump so my expertise is only via research when it comes to ones plumbed from then return itself. And it's through that research that brought me to the conclusion a separate pump was the best way to go for myself anyway

That's the way I have mine. Works well and you can fine tune it easier.

 

[User]

Yeah- reactors etc and stuff that have a variable output are on there own 650 gph pump and manifold.

I teed the return for my fuge, and cryptic fuge, since they are constant flow/ output, but somehow forgot that gate after the Tee. I just ordered a Spears gate.

Thanks guys

 

[User]

One before the manifold and one after helps greatly to manage pressure on the manifold.

So- one before the Tee and one after the Tee? Seems like the first one would be opened almost all the way up, though.

 

[Flippers4pups]

So- one before the Tee and one after the Tee? Seems like the first one would be opened almost all the way up, though.

If done with unions, the first valve allows you to shut off the manifold for service (can remove the manifold and replace valves as needed). The first valve also regulates how much total pressure is on the manifold.

 

[User]

I see- yes, I use true union valves. I have s ball immediately off the Tee yo shut it down , then individual gates in the outlets.