Recent content by Superconnect

Ok, I'm new to all this, but the Grundfoss data sheets define the first number as the nominal port diameter in mm, and the second number is the maximum head in dm (decametres). i.e. 50dm = 5m. So, if I step up to 25mm ports, will I see a slightly lower flow speed through the pump and so less...

Hi, could you explain this a bit more? I want to replace a 15-50 pump, which is on 22mm pipe. So should I change to 25-50? The pump dimensions are identical, so it would be a straight swap. Will it reduce flow noise, or should I stay with the same bore?