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Recent content by Ork1

  1. Ork1

    Flow rates and pressure formula for gland water service.

    Thank You Artisi, I know you have some mining experience, you are correct;slurries are variables, pressures fluctuate in addition, we are running a vfd which adds to the situation of "getting it right". I have 24GPM going into a 1 inch pipe to the stuffing box, there is, however, some concern as...
  2. Ork1

    Flow rates and pressure formula for gland water service.

    I am in the midst of commissioning a mill which will extract gold. Question is; where can I find a formula for gland water service on a 14" by 12" slurry pump which will feed slurry to the cyclone pack 3 levels up?
  3. Ork1

    DO MAG-COUPLINGS SLIP?

    Please refer to this link. It is a youtube video, it does show how mag-couplings (all with an air gap) are being used. No pipe strain to worry about, no precision alignments to worry about, less energy to run. But always carry a good strobe light...haha as I have found out...
  4. Ork1

    DO MAG-COUPLINGS SLIP?

    Hydromech, Yes, it is obvious there is slip. I am truly getting familiar with what applications I can run these couplings and not have it affect certain pump circuits. The information you supplied me will help to research this further. Thank You, Scott
  5. Ork1

    Do we need the min. flow re-circulation line..?

    Nesamani, Just try working with your permissives in your PLC. You can change start-up sequences and or shave off some time at each step. take notes as to pressures and flows etc..
  6. Ork1

    DO MAG-COUPLINGS SLIP?

    BigInch, Yes, I noticed a 45 gpm loss in a water circuit that treats underground mine water. It is pumped through a sand filter and discharged to the river. Sand filtering is just one portion of the system. The filters go through several back flush cycles and the sand gets periodically...
  7. Ork1

    DO MAG-COUPLINGS SLIP?

    I appreciate all responses, The "Mag-Coupling" we have purchased and installed replaces a rigid coupling or a flex coupling. It was intended to help get more life out of our mechanical seals, keep in mind, we are pumping slurry at various speeds, flows, density, pipe stress, cavitation, etc...
  8. Ork1

    DO MAG-COUPLINGS SLIP?

    Tenpenny, These couplings actually have an air gap, between the faces on the coupling halves.
  9. Ork1

    DO MAG-COUPLINGS SLIP?

    I am working at a gold mine in Alaska. We have recently installed several mag-couplings on certain pumps which pump processing chemicals, gland water, potable water. They are installed on pumps with vfd's and without. My question is very general in nature; Does the mag-coupling have a certain...
  10. Ork1

    Velocity vs. Discharge Piping Diameter

    Thank You Ibrahim, Micalbrch, Very interesting coupling, I can think of many piping arrangements that would benefit from this. I did speak with a Warman rep. and he had no objections with bolting an 8" line to the 6" discharge flange however, I also seek the advice of this forum for more in...
  11. Ork1

    Velocity vs. Discharge Piping Diameter

    Saplanti, Thank you; I am using 8" Goodall Hose for piping and it is well supported. I have rubber lined steel pipe for spools/concentric, and I am pumping a very course slurry with high concentrates of quartz. Very abrasive material. My pipe connections are victaulic which in itself, if not...
  12. Ork1

    Velocity vs. Discharge Piping Diameter

    Warman flanges are oversized.
  13. Ork1

    Velocity vs. Discharge Piping Diameter

    I can fabricate a discharge spool to eliminate the concentric which often fails prematurely. What is the requirement or rule of thumb for keeping the same diameter off of the volute or case. Can I fasten an 8" spool directly to the case of the pump or will that effect the velocity too much?
  14. Ork1

    Velocity vs. Discharge Piping Diameter

    I am using several 8x6 Warman slurry pumps with closed impellers. My discharge piping is 8" and 10" but I have a 6" spool piece fastened to the volute/case and a concentric that fits up to 8" or 10" respectively (6"x8" concentric). What changes would occur if I just came off the pump with an 8"...
  15. Ork1

    Underflow thickener pump problems..

    For our pre-leach thickeners we are using Vogelsang pumps. They are high maint. and very expensive. We want to cut costs and we are in the midst of installing an ODS pump with air assist and ball checks but current plant air pressures are not sufficient. I was just curious if anyone had a pump...

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