Eureka!!! Just goes to prove the old adage... check the simple things first. There were two automatic air vents installed on the system where the pipework rose over the wall. These were of an incorrect type and were installed 'in-line' and designed for steam!!!! Unfortunately, they had been...
Just to let you all know that this problem is still ongoing. I am awaiting a break in production so that we can disconnect the pipe at the inlet to the bath and see if we get an increased flow. I hope that this can be completed sometime next week. I will post the result.
I have been in contact with Grudfoss Technical and provided them with details of the system so that they can correctly size a pump to do the duty we require.
However, in the meantime the contractors on site have removed the double reg valve, metering station and flow switch to ensure that these...
I have received the pump curve from the manufacturer and have tabulated the graph below.
20 lpm 20.75 H[m] 2.03 bar
30 lpm 20.00 H[m] 1.96 bar
40 lpm 19.50 H[m] 1.91 bar
50 lpm 18.50 H[m] 1.81 bar
60 lpm 17.50 H[m] 1.71 bar
70 lpm 16.50 H[m] 1.61 bar
80 lpm 16.00 H[m] 1.56 bar
90 lpm...
Thank you all for your help and advice.
I made a slight error on my original post :-P; the smallest diameter in the system is a 20mm (3/4”) Double Regulating Valve and Metering Station. The rest of the Pipework is in fact. 28mm (1”).
255362 - The internal diameter of the pipe will be around...
Hi all,
I hope someone can shed some light on this problem I am having. I have just installed a new heating system to a production line. The system is as follows. I have an open bath containing 2000 Litres (440 gallons) of clean water. A centrifugal pump capable of pumping 90 Litres (20...
