Flow flow flow, we all say flow!

[kosch]

I upgraded from AIO to a hardline build back in August 2021 flow rate was 150 L/H then slowly got worse and worse, thanks Aquasuite flow rate graphing!!

Now it won't go over 94 l/h at 100% pump speed, support article says min of 100 L/H is safe.

https://customerservice.ekwb.com/hc/en-us/articles/4401875216914-What-is-a-safe-flow-rate-value-

I recently had my D5 pump replaced as it appeared to be dying from the evidence I had to hand. Replaced it and also added an active backplate into the mix whilst I had it drained but flow rate still the same.

I had previously drained the whole loop, taken it apart, flushed the rads, dismantled the blocks and cleaned them and still the same result.

Also spent a long time rocking/turning/upending to ensure I got all the air out and bled air from the distro plate.

This link indicates that having a number of fittings in your build shouldn't impact flow massively either https://www.ekwb.com/blog/do-angled-adapter-fittings-really-reduce-flow/

Coolant under load hits around 36c.

So I guess what am I asking is..

1) People with similar hardware as below, what is your flow rate at 100% pump speed?
2) Is it possible to pressure blast the radiators incase there is a blockage my basic flush didn't pick up?
3) Sweet baby cheeses make a suggestion I haven't thought of.

Thanks for reading!

Lian Li Dynamic XL
13 x Angled fittings
4 x offset fittings
2 x tube bends
EK-Quantum Reflection PC-O11D XL D5 PWM D-RGB - Plexi
EK Water Blocks EK-Quantum Convection D5 Pump Cover - Nickel
EK Water Blocks EK-Quantum Vector MSI Trio RTX 3080/3090 D-RGB Water Block - Nickel + Plexi
EK-Quantum Vector TRIO RTX 3080/3090 Active Backplate D-RGB - Plexi
EK-Momentum MSI Z390 MEG Godlike D-RGB - Plexi
EK-CoolStream PE 360 (Top)
EK-CoolStream SE 360 (Side)
EK-CoolStream XE 360 (Bottom)
EK Fittings and 16mm Acrylic Tubing
Aquacomputer flow sensor high flow NEXT
Mayhems XTR Nano Tech Premixed Coolant

 

[kosch]

Hey everyone

Thanks for the replies.

• The component temps seem fine.
• The below graph starts around August 2021 until around now. The highest point being 160 L/H and then over the months slowly dropping down to 96 L/H which is why I was concerned something had become blocked/stuck as it was the only thing I could think of that would cause a trend downwards when I hadnt changed anything.
• Pump has been running at 100% since August and I'm running the replacement at 100% too.
• The outlets are fitting free, just straight pipe runs, although they do have an angled adapter at the end for the rads
• With the active back plate attached to the GPU block it says you can use any but I went with their recommended defaults.
• I guess there could be a fault with the "Aquacomputer flow sensor NEXT" I could pickup a second hand cheaper flow sensor and see if they are close in number.

 

[kosch]

Thanks, I will try to source a cheap barrow or byzki flow sensor to test before a warranty claim.