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Recent content by Giray Veli

  1. Giray Veli

    Pump Impeller

    I can provide 20Cb3 but Teflon coated impeller is easy to provide for me. Thank you for your kindly reply.
  2. Giray Veli

    Pump Impeller

    Thank you for all comments I am appreciate. We decide to change pump impeller. First we will use Teflon coated impeller because it is easy to provide for us. If we face again same problem we will use Alloy 20Cb3.
  3. Giray Veli

    Pump Impeller

    Some of the materials for impeller hard to find. I will searched other materials and inform you.
  4. Giray Veli

    Pump Impeller

    I have faced 3 times that impellers has cracked. The temperature is in the range.
  5. Giray Veli

    Pump Impeller

    Hi, you have mentioned many different situations and ı want to make it narrow, The temperature was always same nothing changed. I have calculated the NPSH and NPSHA is 5,9m NPSHr is 3m. I dont think so ıt ıs wrong. The application has work correctly 6 months without damage. We changed the pump...
  6. Giray Veli

    Pump Impeller

    Hi, the supplier is Hydroo pump and when we ask them they have recommended this PVDF pumps. I think so they were wrong bcz our 2 PVDF pumps had this damaged. Now we ordered Teflon impeller pumps, hopefully they can run proper. The temperature is 40 C.
  7. Giray Veli

    Pump Impeller

    When ı checked the tempretaru ıt was 40 C and ıt ıs normal.
  8. Giray Veli

    Pump Impeller

    I have used 3 different pump in here and all pump’s impeller got the damaged. We have bought all pumps a reliable vendor.
  9. Giray Veli

    Pump Impeller

    We have 2 pump and one of standby, both pump’s impellers got damaged and this is the standby pumps impeller photos and the cracks part is same but, the body of impeller has wave shape I don’t know why. I think can not be appropriate for fluid but the vendor said it is manufactured for sulphuric...
  10. Giray Veli

    Pump Impeller

    Hi everyone, we are using this pump to transfer sulphuric acid. Our concentration is %85 and this impeller MOC is PVDF. This impeller got some damage but we don’t know the reason. There is no particule on fluid it is clean and closed system. I have faced this problem 3 times and I want to know...
  11. Giray Veli

    Flange leakage

    Thanks for your kindly replies, we have solved the problem. The problem ıs our return line valve was broken and we didn't know that today we observed it and when we change the valve the problem solved.
  12. Giray Veli

    Flange leakage

    There are spring bolts on these furnaces other connections. The vendor send us the dimensıons of tightening but for that bolts which has leakage no information, no dimensions thats why we are facing with that problem.
  13. Giray Veli

    Flange leakage

    Bolts are carbon steel and M20, this purple area has leakage, gaskets are viton and furnace steam pressure is 5 barg.
  14. Giray Veli

    Flange leakage

    Hi everyone, we have a hidrocloric acid furnace, this furnace has 3 part and every part connected each other with flanges. We are running that furnace for 15 months and furnace temperature between 250-400 C(varies according to load) this furnace has leakage from the flanges connections. When we...
  15. Giray Veli

    pump noise

    We have solved problem. We close the return lıne valve to %10 and the sound has cut. Our operation point has moved to right and we adjusted it. Thanks for your replies.
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