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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.

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.

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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