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Control systems Desuperheaters
Safety information, installation and maintenance For full details see the Installation and Maintenance Instruction that are supplied with the product. Installation note Desuperheaters may be installed either horizontally or vertically with the steam flowing upwards. Spirax Sarco strongly advises against installations in which the steam flow is vertically downwards.
In the case of a horizontal installation the cooling water connection (and the atomising steam connection on a steam atomising desuperheater) should ideally point downwards, as this gives the best orientation for drainage of fluids in a shutdown situation. Other orientations are acceptable for satisfactory operation, but drainage is not as effective. In a vertical installation we recommend that, the cooling water pipework (and atomising steam pipework, if applicable) should be brought to the Desuperheater from below the corresponding connections on the desuperheater. This will provide the best layout for drainage of fluids on shutdown.
Desuperheating and pressure reducing stations Spirax Sarco can provide complete desuperheating and pressure reducing stations including control valves, temperature sensors, pressure transmitters, instrumentation and pipework, all mounted on a support skid.
4.8 8
Pressure controller
Pressure regulating control valve
Desuperheater
TS PT
Steam supply
Temperature regulating control valve
Temperature controller
Cooling water
Combined desuperheating and pressure reducing station for venturi and spray type desuperheaters
TI-P475-01 TES Issue 5
Page 8 of 9
Direct Contact Desuperheaters
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