georgeverghese
Oh, I see. Unfortunately, I don't have that data. We don't have any flow indicators on the DN3 branch to gather this data ourselves. Maybe we can try using a portable ultrasonic flow meter for that the next time we do test the pump.
I'm not sure if table 6 data was based on...
georgeverghese
Regarding the ARC datasheet, I'm not sure if this is what you are looking for, but there is a characteristic curve for this valve on page 2 of the 4th link from my previous reply. If this is not it, unfortunately I couldn't find it...
georgeverghese:
The drawing only shows 4 stages but the pump actually has 9 stages.
No, we haven't tried switching the ARVs of A and B.
I have attached the following...
LittleInch:
Maybe I am overestimating the run down time. I'll have to time it next time we conduct testing and I'll get back to you on this. I'll try to see if anyone got a video of the run down and time it there.
We haven't thought about checking the return line, so no, not yet. Do you think...
LittleInch:
Oh yeah, the model of this pump is TTMC-50 so dimension E is 0.075mm. Forgot to mention that I was referring to diametral clearance so multiply by 2 = 0.15mm which is the minimum clearance. Doublechecked and manual says max diametral clearance is 0.30mm and not 0.285mm. Apologies.
I...
3DDave:
I'll add that to the things that I'll check. I haven't looked into it yet. Looking at the parts list though, it seems the balancing drum and the liner have different material grades.
Balance Drum - 1.4057 HV
Balance Drum Liner - 1.4138 WNT
Regarding the fluid though, propylene liquid...
Hi all,
We have this problematic multistage vertical centrifugal pump that seizes every time it is shut down. We’ll call this problematic pump as Pump B because it is a standby unit to another pump that we’ll call Pump A. See pump operating info below:
Service Liquid: Propylene
Density: 480...
