Sizing Steam Regulator for Atmospheric Deaerator

Calculating for Regulator Steam and Size
1. Enter System Load expressed as any of the following units in the drop-down list. Boiler HP Sq. Feet EDR Lbs./Hour BTUs/Hour MBH GPM #1	Regulator Design Amount of Steam lbs/hr Regulator Size inch #5
2. Enter Temperature of Liquid to be Heated in degrees Fahrenheit. °F Blended Temperature calculator #2
Temperature inside tank is fixed at 212°F. #3
3. Select steam pressure available at regulator. Choose... 5 10 15 30 50 75 100 125 psi #4
Regulator amount of steam resulted in a value that exceeds a regulator size of 4 inches.
Press "Reset All" to CLEAR ALL calculations and enter new values.

Notes

1. System's load includes all boilers that may run at the same time.
2. The temperature (°F) of condensate returns and make-up water is returned to as blend temperature.
3. Represents temperature (°F) that the liquid is to be heated to.
4. Steam supply pressure cannot exceed 125 psig. If steam supply pressure available is above 15 psig, a pressure reducing valve must be used to reduce steam pressure down to 5-7 psig in the tank. A SPENCE Engineering Regulator comes standard with a pressure reducing valve.
5. Size is for a SPENCE Engineering Pneumatic Regulator (E2A85T61 or EA85T61), normally used on Atmospheric Deaerators when air is available. If no air is present, a self contained regulator like what is listed for boiler feed units above is used. Model E2A85T61 used if steam pressure is 15 psig or less. Model EA85T61 used if steam pressure greater than 15 psig and less than or equal to 125 psig.

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