Search results for query: *

I was in Japan some years ago and heard story that the Koso implementation of DRAG was a disaster, with parts not fitting together, and these Koso designs being cut out. I also never heard of any Hammel Dahl "stacked disc" valves in America. Does anybody else know anything about this?

Shameer - thanks for the good question! Answer is: probably! You can use multi-stage trim to control trim exit velcoity head (dynamic pressure). This approach should reduce the amount of energy which is converted into noise and vibration in flashing service. I have heard that some plants...

No. The valves are typically rated to ASME B16.34. B16.34 para 6.4.1 specifies bolt area requirements and directs user to Sect VIII Div 1 or Sect III Div 1, Cl 2 or 3, for allowable stresses. Our interpretation is that we can not rate valve to B16.34 if we do not use ASME materials for bolting.

We have traditionally used A193-B16 bolts for valves up to 1050F. Beyond 1050F we use INCONEL 625 or B446 bolts. This works fine but is really expensive. EN 10269 permits use of the X22CrMoV12-1 (DIN 1.4923) bolts to 600 C (1100 F). This is a 12 chrome creep resistant steel, perhaps...

I was at a users group meeting last year and several memebers spoke well of the CCI design. At least one plant manager said he wanted to try the CCI cool mist nozzles. CCI has a cool mist video posted at: http://www.ccivalve.com/index.html Do any of you have experience with CCI...

IEC has solid method for noise prediction. In valves with multi-stage trim, IEC says to calculate jet noise generated at last stage. The more stages, the less noise. The CCI DRAG disk design uses this principle and can have 10, 20, or even 40 stages to control noise. Small port trims can...