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Need advise on big steamer. Double check return??

TimcoTimco Member Posts: 2,826
This big guy ate the checks up and just pushes back and forth into the cond tank every 90 seconds and shoots water during cycles. I’m going with industrial checks myself but can I double check that? 1.8 mil BTU 150 units.


Working on steam and hot-water systems isn't rocket science....it's actually much harder.

Comments

  • EBEBRATT-EdEBEBRATT-Ed Member Posts: 2,457
    Better quality check valves and multiple check valves will help. I prefer y pattern check valves. I would go with 300# check valves are probably better quality.
  • The Steam WhispererThe Steam Whisperer Member Posts: 139
    You might want to check on these. http://www.dft-valves.com/. I have started using them exclusively after my long time vacuum pump rep in Chicago recommended them. You can get them through Affiliated Steam in the Chicago suburbs.
  • JUGHNEJUGHNE Member Posts: 3,245
    edited October 12
    FWIW, I tried to convince maint people at my hospital that they should throttle the flow down on their feed pumps. The pumps seem to be over sized for the application and don't have to run but a few seconds. High dollar checks would get wire drawn from velocity of flow. The seats had severe grooves cut in them.

    They had poppet above the ped pumps and horizontal swing at the HL where the water returned. The poppets failed early and eventually the swings.
  • The Steam WhispererThe Steam Whisperer Member Posts: 139
    Some people just won't listen. I guess when the boiler fails due to thermal shock, maybe they will listen then.
  • HenryHenry Member Posts: 720
    By code, you have to install double check valves. We use spring loaded S/S check valves. We install and forget about them.
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