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  1. BigJay

    Corrosion in a clean water 316L break tank

    Thanks guys for your advice. Our investigations are ongoing and your pointers line up with are current assessment. Ed Stainless The tank is vented but only with a small 1" vent pipe. The external environment is a kiosk in which the tank is installed. The kiosk is outdoors. We don't know if...
  2. BigJay

    Corrosion in a clean water 316L break tank

    Hello All I was wondering if anyone could help with a corrosion problem that we have encountered in some stainless steel (316L) Break tanks. The tanks are used in a water treatment process and the supply water is essentially potable with free chlorine levels of around 0.7 mg/L and a pH of...
  3. BigJay

    Driveshaft modification

    Hello There I hope that you can help. A good friend of mine has a VW split screen van that he has shoehorned a 3.0L V6 renault engine into. He is having problems with the driveshafts which he is making up from 2 existing shafts to suit. Essentially, he is trying to join one half of a renault...
  4. BigJay

    hypochlorite feed systems

    Regarding peristaltic pumps. Do not expect them to be maintenance free. The tubing in the pump head will get worn by the rollers. 4-6000 hrs life is quoted by some manufacturers.
  5. BigJay

    Mechanical diaphragm pumps vs Hydraulic diaphragm pumps

    Gallons per hour being the case then I agree, solenoids are out of the window. However, I would still advise a duty standby system on whatever you use, as both pump types you have mentioned are vulnerable to the occaisional failure. I have used Alldoss and Prominent pumps in similar conditions...
  6. BigJay

    Mechanical diaphragm pumps vs Hydraulic diaphragm pumps

    Further to last post. I assumed that by gph you meant gramms per hour. Did you actually mean gallons per hour?
  7. BigJay

    Mechanical diaphragm pumps vs Hydraulic diaphragm pumps

    ADAG Here is a starter for 10. Your dose rate may well be the key issue. Is the 100 gph related to the solution or the chemical mass flow? Either way, a finger in the air guess says that your volume flow rate is going to be in the order of 0.1 to 1 lph. At this low flow rate, motor driven or...
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