DH Type Flash Condensing Deaerator Heads - Spirax Sarco

1 Local regulations may restrict the use of this product to below the conditions the interests of development and improvement of the product, we reserve the right to change the specification. Copyright 2004 ISO 9001 Cert. No. LRQ 0963008TI-P401-25AB Issue 3DH TypeFlash Condensing Deaerator Heads1323 Head comprisesItemQuantityDescriptionMaterial 11 Mixing unitAusteniticstainless steel21 Immersion tubeAusteniticstainless steel32 GasketSilicone rubberApplicationSpirax Sarco Flash Condensing Deaerator Heads are ideal for boilerfeedtank applications. They are suitable for both new and retrofitapplications. Each head is fitted with a connection for air vent andrecirculating feedwater spray nozzle. The air vent is for theimmediate venting of liberated gases (the connection should alsoinclude a vacuum breaker). For further details on the RFSrecirculating feedwater spray systems see separate simple low cost solution for deaerating boiler feedwater at atmospheric pressure Mixes hot and cold incoming flows Liberates oxygen and other gases Stainless steel for long maintenance free life Easy to installDescriptionSpirax Sarco Flash Condensing Deaerator head is designed to mixincoming flows of cold make-up, condensate return and flashsteam to the boiler feedtank.

2 This mixing action is achieved bydirecting the downward flow through a baffle arrangement withinthe unit. This liberates dissolved gases from the cold make-up,which are vented to atmosphere. The cold make-up inlet is fittedwith a spray screen which diffuses the flow, increasing its surfacearea to promote thorough mixing with the condensate andflash Spirax Sarco Flash Condensing Deaerator head consists of threeparts:-A mixing unit, which is bolted to the top of the tank and issupplied with connections to customer specification for coldmake-up, condensate return, Flash steam from blowdown immersion tube, which distributes the mixed fluids into thetank and has an integral plate flange which is sandwichedbetween the tank and mixing unit tubes are fully described in separate Two gaskets are required, one fitted each side onthe immersion tube flange. They are ordered typesThe mixing unit is available in five nominal diameters (DN150,DN200, DN250, DN300 and DN400) flanged to BS 4504 PN16 orBS 1560 Class tubes are available in diameters to suit the deaeratorheads and lengths of 950, 1200, 1600 and 2100 mm to suit TMmetric feedtanks.

3 Since each Deaerator head is built to suit specificplant requirements we recommend that your local Spirax SarcoEngineer is contacted for a connection layout sheet and to discussyour tableTotal steamMixing Tank depthgenerationunit1250150020002500rate (kg / h) Mixing unit / immersion tube selection5 000DN150MU150MU150MU150MU150IT-950IT-120 0IT-1600IT-210010 000DN200MU200MU200MU200MU200IT-950IT-120 0IT-1600IT-210020 000DN250MU250MU250MU250MU250IT-950IT-120 0IT-1600IT-210030 000DN300MU300MU300MU300MU300IT-950IT-120 0IT-1600IT-210050 000DN400MU400MU400MU400MU400IT-950IT-120 0IT-1600IT-2100 Limiting rating. Suitable for saturated steam 1 bar g, 120 mixing unit only is hydraulically tested to 2 bar Type Flash Condensing Deaerator HeadsTI-P401-25AB Issue 3 Centre line ofconnections forcold make-up,condensate return,blowdown Flash steam, mmConnection for recirculatingfeedwater spray nozzle100 mmFlange for mounting on feedtankBA20 mmConnection for air vent/vacuum breakerHow to specifyAtmosperic Deaerator head in austentic stainless steel consisting ofmixing unit, immersion tube, and two gaskets.

4 DN150, DN200,DN250, DN300 and DN400. Flanged BS 4504 PN16 / BS 1560 Class to orderTo specify a 150 mm Flash Condensing Deaerator head flangedBS 4504 PN16 (mixing unit plus immersion tube and gaskets to suita 1250 mm deep feedtank):-MU150 - PN16IT150 - 950 PN162 off gaskets to suit IT150 - 1200 PN16 Connection details also need to be / weights (approximate) in mm and kgMixing unitTypeABWeightMU150_17548430MU200_2005 2250MU250_22055765MU300_25061790MU400_29 0680125 For details of immersion tube and gaskets see separate literature.