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Product overview
Boiler control and systems
An extensive range of boiler controls and systems are available. Whether it’s a completely new boiler house plant or a simple blowdown valve replacement, Spirax Sarco will have the answer.
1. Feedtanks The Spirax Sarco feedtank is an atmospheric deaerator fully constructed in stainless steel - no rusting, no linings, coatings or joints to leak. It is fitted with a flash condensing deaerator head which combines: cold make-up, condensate return and flash recovery. Flash steam is condensed whilst heating and deaerating the cold make-up.
4. Steam injection systems Steam injection systems can be used to inject steam into feedtanks to drive off the dissolved oxygen. This reduces the amount of oxygen scavenging chemicals required, and maintains a high and steady feedwater temperature to the boiler. 5. Level controls and alarms Significant developments have taken place in recent years considerably improving the standards of safety and reliability of boiler level controls. Probes without moving parts and modern electronic controllers are so reliable that major boiler accidents should be a thing of the past. The range offered has been approved as complying with the relevant Codes of Practice and European regulations. 6. Feedpump check valves Feedpump check valves are fitted with heavy-duty springs and soft seats to prevent a shutdown boiler from flooding with feedwater.
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The deaerator head is also available for fitting into existing feedtanks.
2. Boiler blowdown systems As steam forms it leaves behind impurities in the boiler water that will concentrate unless removed. The TDS (Total Dissolved Solids) in the boiler must be accurately controlled. High TDS can result in carryover of boiler water and impurities causing problems with production and plant. Low TDS due to too much blowdown increases fuel and water treatment chemical costs. Systems are available for all sizes and types of boiler.
3. Sample coolers To be sure that a boiler is operating at the desired
concentration of TDS it is necessary to take a sample of the water and test it. The stainless steel sample cooler lets the operator do this safely and accurately.
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