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  • Users: Dersnerman
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  1. Dersnerman

    Help with Design Resources for Small Overflow Weir Design - Hydropower & Microhydropower

    Hello All, I'm working on a feasibility study for an approximately 300kW microhydro site. Design flow is about 200 l/s. For the weir, we are of course interested in flood flows. Let's assume flood flows are 2m3/s (2,000 l/s). I'm looking for design resources or sample drawings / images...
  2. Dersnerman

    Simple Hydraulic Loop - Cannot Figure out what the tank is for?

    Hello All, I'm trying to figure out the reasoning behind what appears to be a bizarre system installation I just inspected at a plant. It's for an emergency eyewash loop. See attached diagram I sketched for it. To me it would all make sense IF the tank was a pressure tank (bladder tank)...
  3. Dersnerman

    Question on Air Valves for Small Diameter Pipeline

    Hello All! I could use some feedback on the following application. I'm wondering what I need in terms of air valves for this 1km long, small diameter, low pressure pipeline. Drawing attached. 1) 2" diameter, 1km long pipeline. 2 high points where air can collect. Q = 10 GPM. 2) Same as...
  4. Dersnerman

    Connection of HDPE flange adapter to FF Cast Iron flange

    Does anybody know of a cost effective way to mate cast iron FF flanges to HDPE flange adapters, which are by nature RF type? Flange connections to brittle materials such as cast iron body valves, and pump discharges, should be connected to FF flanges to avoid stress concentration on the cast...

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