Can someone help estimate my Total Resistance to Flow (Feet of Head)

[1PoolNoob]

Great, thanks.

So in essence, installing the Hayward 3/4hp SuperPump shouldn't pose a risk of damaging the system because it will actually output less GPM than the current pump that's in there now?

Also, would you recommend putting in a ball valve between the pump output and filter to manually reduce (throttle) the flow to the desired level? Is this safe for the pump's longevity? Does it cause a reduction in electricity usage?

[mas985]

The new pump should should pose LESS of a risk but if your current pump did not damage the filter, then I doubt this one will.

As for a throttling valve, I don't think you need one. If the old pump did not do any damage in 30 years, what makes you think the new one will? However, restricting water flow will reduce energy use but not by much.