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DESCRIPTION The VAD is a cost effective, line size desuperheater. Produced from stock materials it is readily available to satisfy general desuperheating and gas cooling applications.
Essentially a dynamically contoured, stainless steel spray head concentrically located within a short section of pipe (body). The pipe acts as the desuperheater’s outer body and pressure boundary. It fits into the main vapor line via either line size flanged or butt weld end connections for easy installation.
Variable Orifice Desuperheater VO-76
DESCRIPTION Copes-Vulcan’s VO Variable Orifice Desuperheater is recognized industry wide as the most versatile desuperheater available. It is easily capable of meeting the most demanding needs for desuperheating in both the power and process industries. The VO offers extremely fine control and exceptional turndown that is limited only by the rangeability of the coolant control valve itself. The VO-76 is also available with a housing fabricated from forged and wrought piping components when technical specifications and/or N.D.T. requirements preclude the use of castings. Again, reducers and flanges can be added as required, but unlike the cast VO-76, this applies to both inlet and outlet on the fabricated version of the VO-76. By using various sized reducers/expanders and/or flanges, an almost endless variation of dimensions and end connections can be achieved.
VO-II
DESCRIPTION Copes-Vulcan’s VO Variable Orifice Desuperheater is recognized industry wide as a versatile desuperheater. It is easily capable of meeting the most demanding needs for desuperheating in both the power and process industries. The VO offers extremely fine control and exceptional turndown that is limited only by the rangeability of the coolant control valve itself. With excellent mixing of vapor and coolant, control is possible throughout the entire operating range to within 3± 5° F (± 2.5° C) of the set point which can be as close as 10° F (5° C) above saturation. The coolant pressure which is required at the inlet to the VO need only be 5 psi (35 kPa) above the pressure of the vapor being desuperheated.
Because virtually all of the desuperheating occurs within the VO body itself, the temperature sensing element can be as close as 14—20’ (4—6m) from the desuperheater outlet.