WT3 Series

• Undesirable, throw-away, non-repairable construction is avoided (as seen on some watertubes and exotic designs)
• Our FIRETUBE design has 100% water-cooled heat transfer surface; no hot fins to burn away
• High efficiency is obtained without using a fourth pass; fourth pass tubes have often been subject to premature failure.
• FIVE square feet of heating surface for each boiler horsepower

• Time-tested design
• Hinged front doors provide fast access to tubes without disconnection of pipes, fuel lines or electrical cables AND without disturbing firing equipment
• Shipped completely assembled and factory test-fired
• Ample steam space and steam release area yield dryer steam and minimize scaling of system components

• Separate rear doors offer simpler, faster access
• An extra 15-inch quick access inspection port is nested in the lower rear door
• Split rear doors reduce refractory use and attendant maintenance costs
  Refractories are of the field-replaceable, castable variety; no special expensive blocks or bricks

• Extra handholes are provided in a superior location in the front tube sheet below the furnace
• Offset handhole plate studs ease insertion and removal

• Two rear tubesheets, one for each pass; uneven stress is eliminated
• Water-cooled pass divider plate; this prevents short circuiting even if refractory needs repair
• Twin tube sheets eliminate need for welded tube attachment (welded tubes are more difficult to replace)

• Large 5/8″ BOLTS are used on all doors; fewer are required; opening/closing is faster; easily damaged studs are avoided
• All fireside doors have long-life gaskets, fit for repeated use

• Safety valve(s)
• Waterglass set
• Pressure gauge
• Gauge cock
• Trycocks
• Pressure control – high limit (manual reset)
• Pressure control – operating
• Pressure control – high fire control (modulating as required)

• McDonnell & Miller 157S low water cutoff and pump control c/w water column blowdown valve
• Warrick manual reset probe type auxiliary low water cutoff c/w probe relay
• Feed water check valve
• Feed water shutoff valve
• Ball type, quick opening, bottom blowoff valve (Optional quick opening valve types are available)
• Y-pattern globe slow opening blowoff valve
• Surface blowdown skimmer pipe, ball valve and throttling valve

We specialize in customizing your boiler. The Scotpak can be equipped to suit a wide variety of installations and specifications. We will help direct you to the most cost-effective models and features.