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  • Users: Keef
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  1. Keef

    Recovered hot water into steam generation

    Are you hoping to generate flash steam from the process water, in which case this is viable, but you won't get loads of flash as you are only flashing down by 5 bar - but you will get something. You will also have water still at 20 bar and saturation temperature that you could get energy out of...
  2. Keef

    Steam Valve Supplier

    Hi, I'm looking for a supplier for a DN500 globe stop valve, ANSI 600, for use on steam. Can anyone suggest a supplier that they have good experience of? Keef
  3. Keef

    TDS measurement of the boiler

    Gladdkenn, The conductivity level is dependant on temperature and pH. Usually the sample is cooled through a sample cooler when taking samples (otherwise you risk some of the water flashing off and concentrating the TDS level in the water). You can either not bother to nutralise the sample and...
  4. Keef

    Dielectric Connectors

    Hi, I have been asked about the need for dielectric unions in steam and condensate systems when using a combination of steel pipes and SG iron and bronze valves. Can anyone give me advice on whether they are needed? Just so you know, the job involves hot water generation in hospitals. Keef
  5. Keef

    Steam Trap after Desuperheater

    I have been asked to select a steam trap for installation after a desuperheater. I have been led to believe that it is usual to install a collecting pocket with a trap in such circumstances. I believe the desuperheater will be a spray type. What load do you base the sizing of the trap on? The...
  6. Keef

    Liquid drain traps

    Can anyone tell me if there are any ANSI/DIN standards relating to the design of liquid drain traps, in particular, for use on compressed air systems?
  7. Keef

    Pressure testing pipe work

    Thanks StressGuy, I have passed this information on. Would you believe that I was asked by a consultancy firm in Dubai!
  8. Keef

    Pressure testing pipe work

    I have been asked for help regarding the requirements for pressure testing new steam pipe installations. This is not my field of expertise and it is not my intention to start advising on a subject I know little about. But can someone point me in the direction of a standard that I can refer them...
  9. Keef

    Superheated steam in heat exchangers

    Can anyone point me in the direction of some information regarding the use of superheated steam in heat exchangers. I know that it reduces the heat transfer rate as the bulk of the heat transfer is obtained by the change of phase, which only occurs after the steam has lost its superheat. I do...
  10. Keef

    VEGATABLE OIL OR FAT IN CONDENSATE

    I belive you can use an oil in water turbidity meter. A standard turbidity meter will not do as it will only pick up solid particles, so be careful when contacting suppliers. Try the usual analytical instrumentation suppliers. Keef
  11. Keef

    steam separator

    From what I have been led to believe, the vortex type of separator will give the better performance if the conditons are ideal (for the separator). Baffle type separators are better where the pressure and flow rate fluctuate. Personally, I prefer to specify baffle type units. It is important...
  12. Keef

    Project Engineering Courses

    pclegg25, I would recommend the courses that Lancaster University run. I completed their Certificate course a year ago. This course is a 9 month course based on modules completed on campus along with written assignments. The course covers all aspects of project management and is applicable no...
  13. Keef

    Removal of Safety Relief Valves with out losing pressure

    I am not just on about any old 3 way valve. I am aware of the 3% rule. I am aware of two companyies that offer such valves. Leser and Spirax Sarco. The manufacturers can double check that the changeover valve they offer complies with the 3% pressure drop requirement. Take a look at these...
  14. Keef

    Removal of Safety Relief Valves with out losing pressure

    It seems to me that there has been a lengthy discussion on the issue of 3 port valves for this application. As I origianlly suggested, a changeover valve, which is a type of 3 port valve specially designed for this purpose, would do the job. No need for keys, interlocks, mechanical linkages, or...
  15. Keef

    BELLOW SEALED GLOBE VALVES

    rdj123, I guess that you are only after a PN16 valve if you want cast iron. I work in the steam business, so I know that Spirax Sarco do a range of bellows sealed stop valves. Keef
  16. Keef

    DN 1000 basket strainer

    You could try Kaysafe. They can fabricate all sorts of specials. Tel. 0044 1737 246361. Keef
  17. Keef

    Cast Iron Pressure Relief Valves

    UtilityLouie, I know that cast iron valves are not allowed on steam boilers built to BS standards, but cast iron is not excluded from the rest of the system. I also gather that ASME I allows cast iron safety valves on boilers. Having said this, as there is generally very little cost difference...
  18. Keef

    Removal of Safety Relief Valves with out losing pressure

    genericmech03, You might want to consider installing a changeover valve. This will allow you to connect two safety relief valves, but only having one in service at a time. If you need to remove one valve for maintenance, you just swap over to the other valve and remove the faulty one.
  19. Keef

    Water Sizing Software

    Can anyone recommend a software package for sizing valves, pipes, heat exchangers etc. for water for heating and cooling applications. Keef
  20. Keef

    Reliefs on pressels - Need clarification

    UtilityLouie, It depends on the pressure rating of the vessel and your steam pressure. If you do reduce pressure before the vessel, it is usual to size the safety valve in this way. I should also add that inspectors usually like to see a safety valve mounted after a reducing valve, even if the...

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