LsFarm wrote:Here is the 'Cadilac' of under feed stokers. This is an EFM unit. It is desigined for anthracite. There are more air holes to feed the fire and the mechanism is adjustable to feed coal at ten different rates from 2.5 to 25# of coal per hour.
These units are still in production in EFM boilers.
This Stoker unit is a EFM S-15 Stoker Out a AF-150 Hot Air Furnace Not The S-20 out of a AP - 520 efm or a DF - 520
Also some of the Early Production AP-350 EFM used this stoker unit . With a differnt Mounting Plate a Flat Plate .
Not the Curve one like in the Photo. The curve Plate is on the Hot Air furnaces only. AF-100 AF 125 AF 150.
This stoker unit has a feed rate of 4 to 7 teeth Max 10 lbs Per Hr. to 17.5 lbs Per Hr. 100.000 to 150.000 BTUH Max
The S-20 Stoker unit has a feed Rate from 1 to 10 teeth 2.5 lbs per hr. to 25 lbs per hr.
To see the Photo's Look at the 4th & 5th Post in the begining of this thread .