Text version of the page

Specifications Desuperheating Station

The MA-I desuperheaters are available in carbonand alloy steel, in accordance with ANSI codes. Materials are of the highest quality and selected to minimize the effects of erosion and corrosion. A simple mechanical atomizing desuperheatingstation consists of a temperature controller, a cooling liquid control valve and the desuperheater. The desired temperature is obtained by the temperature controller fixing the amount of cooling liquid flow through the valve and desuperheater. The nozzle of the desuperheater provides the desired pressure drop to ensure that liquid particle size is sufficiently small for quick evaporation.This simple type of desuperheating station isnormally used for steady load applications and asa result, no atomizing fluid is required. However,this can be used when flow turndown require-ments are not too high, in the order of 1.5 or 2 to one. The low limit of flow should be when themain fluid header velocity is 5000' per minute (1525m per minute) or higher.

ANSI Class150-1500MA-IU Desuperheater

Dimensions

Header SizeABCD

3" 12.12 7.88 20 80mm308200508—4" 12.12 7.88 20 100mm308200508—5" 12.12 7.88 20 125mm308200508—6" 12.06 7.94 20 150mm306202508—8" 13.06 6.94 20 200mm332176508—10" 14.12 5.88 20 250mm359149508—12" 15.12 8.88 24

ANSI Class 2500 MA-IU Desuperheater

300mm384226610—14" 15.75 8.25 24

Header SizeACD

350mm400210610—16" 16.75 7.25 24 8" 13.06 22.75 400mm425184610—18" 200mm332578—10" 17.75 6.25 24 14.12 23.81 1.06 450mm451159610—20" 250mm3596052712" 18.75 6.75 25.50 1.5 15.12 24.81 500mm4761716483824" 300mm384630—14" 20.75 6.25 27 3 15.75 25.44 .62 600mm52715968676 350mm4006461616" 16.75 26.44 1.62 Inch 400mm42567241 Millimeter Inch

1" (25mm) Socket WeldCustomer Connection Per ANSI B16.1175" (19mm)3" (80mm) FlangePer ANSI B16.5

Millimeter

2" (50mm) Socket WeldCustomer Connection Per ANSI B16.11.88"(22mm)3" (80mm)Flange Per ANSI B16.5

MA-IU*

B 9.69"(246mm) L Top of GasketCustomer SuppliedHeader ConnectionC Nozzle ø1.330"(34mm)Spray TubeAssembly ø2.90"(74mm)Min. BoreC HeaderSteamFlow Top of GasketCustomer SuppliedHeader ConnectionC Nozzle ø2.406"(61mm)Spray TubeAssemblyø2.90" (74mm)Min. Bore C HeaderSteamFlow C C A A LLL D D * Low temperature configuration.

3 3