Only 20scfh with an ER eheim needlewheel?

[hahnmeister]

With just the volute and needlewheel, my pump only makes 20 scfh of air... 560lph. According to ER (this last summer when I ordered volute & needlewheel), that is all I should need to make my 1260/62 into their version. I can post pics if needed... but 900lph? Yeah, right. There is either something else being done to these pumps, or they arent pulling what they claim.

Im even using a face-mount 1" union and have bored out the outlet to remove the threads.

[hahnmeister]

So the ER eheim 1262 is only good for 600 lph?

[Jim_S]

Mine pulls in 15 lpm. It dips around 13-14 and goes as high as 18 lpm on my dwyer.

Good luck.

Jim

[hahnmeister]

Well, what did they do to your pump that is so special? According to the ER tech I talked to during this summer, all I needed to convert the 1262 to their needlewheel was the impeller and volute/venturi assembly... so I got that. And all I get is 20-22 scfh. Do they bore out the outlet of the pumps or contour the insides?

[Jim_S]

How is the pump mounted? Is it set in an rc style? Or is it set in an insump style?

I'm really not sure what they do. As far as I know, the pumps is stock. I know that with mine, mounted on my 24" skimmer in an rc configuration, the ball in my dwyer airflow meter stays between 13-14 and 17-18. I see if I can put together a video tonight.

Jim

[hahnmeister]

I am getting those readings from just placing the pump in a bucket... no connections at all.