Easco Boiler Corp. | Field Erected & Packaged Quality Steel Boilers A Division of THE A.L. EASTMOND & Sons Corporation
Scotch Marine Boilers
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Item # FPS-500, MODEL FPS - FOUR PASS SCOTCH MARINE BOILER


EASCO Four pass scotch marine design has higher thermal efficiency, up to 3% more efficient than a 3-pass boiler design. EASCO FPS model is wet back fire tube is designed to increase longevity and enhanced durability, has larger steam space and disengaging area. Available in 15psig steam and up to 160psig water design, submersible tank less Domestic Hot water coils are optional.

  • High Efficiency
  • Low Heat Release
  • Low Furnace Pressure
  • 5 Square Feet of Heating Surface per Boiler Horsepower
  • Large Steam Space and Disengaging Area





  • Boiler Rating  · Characteristic Data  · Boiler Dimensions  · Boiler Service Connection Locations  · Boiler Service Connection Sizes

    Boiler Rating

    Horse Power

    500 bhp

    Steam or Hot Water

    16,738 mbh

    Steam, @ 212 F

    17,250 pph

    Natural Gas, @ 1,000 btu/ft3

    20,412 cfh

    Light Oil, @140,000 btu/gal

    144 gph

    Heavy Oil, @ 150,000 btu/gal

    136.1 gph


    Characteristic Data

    Heating Surface, Fireside

    2,500 sf

    Furnace Volume

    170 cf

    Furnace Heat Release Rate

    120,072 bcfh

    Steam Disengaging Area

    95.7 sf

    Steam Space

    109.3 cf

    Water Content, Steam Application

    2,632 gal

    Water Content, Water Application

    3,450 gal

    Shipping/Dry Weight, Approx.

    33,200 lb

    Operating/Wet Weight, Approx.

    62,000 lb


    Boiler Dimensions

    A - Overall Length

    View
    262 9/16 in

    A' - Overall Length w/o Burner

    View
    21815/16 in

    B - Shell Length

    View
    179-1/8 in

    C - Tube Removal Clearance

    View
    185-1/8 in

    D - Rear Door Swing Clearance

    View
    63-3/4 in

    E - Platform Length

    View
    68-5/8 in

    F - Skid Length

    View
    2311/2 in

    G - Fr. Saddle Location

    View
    16 in

    H - Distance Between Saddles

    View
    134-7/8 in

    I - Saddle Side Width

    View
    12 in

    J - Overall Width

    View
    121-1/2 in

    J' - Overall Width, w/o Trims

    View
    103-1/8 in

    K-Saddle Front Width

    View
    78 in

    L - Overall Height

    View
    134-5/8 in

    M - Normal Water Line

    View
    90-13/16 in

    N - Boiler Center Height

    View
    61-7/16 in

    0 - Furnace Center Height

    View
    37-15/16 in

    P - Shell Bottom Clearance

    View
    12 in

    Q - Skid Height

    View
    6 in


    Boiler Service Connection Locations

    R - Supply C.L. to Shell Front End

    View
    52 in

    S-Supply Height

    View
    116-7/8 in

    T - Return C.L. to Shell Front End

    View
    126 in

    U - Return Height

    View
    22-1/4 in

    V - Flue Outlet C.L. to Shell Front End

    View
    13 in

    W - Flue Outlet Height

    View
    113-15/16 in


    Boiler Service Connection Sizes

    a - Supply, Steam/Hot Water

    View
    12/8 NPS

    b - Flue Outlet

    View
    24 in

    c - Safety Valves

    View
    3 NPT

    d - Control Header

    View
    1 NPT

    e - Surface Blowdown

    View
    2-1/2 NPT

    f - Washout

    View
    2-1/2 NPT

    g - Return & FW, Steam/Hot Water

    View
    6/8 NPS

    h - Bottom Blowdown

    View
    2-1/2 NPT

    i - Aquastat

    View
    3/4 NPT

    j - Oil Preheater, Optional

    View
    2-1/2 NPT

    k - Top inspection/Manhole Access

    View
    12x16 NPT


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     MORE IMAGES 

    ·  Model FPS Drawing 1

    ·  Model FPS Drawing 2


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