Shell & Tube
"U" Bend ASME Code
Construction
Standard Features
Type
  • Steam to Water (2 or 4 Pass)
  • Water to Water  (2 or 4 Pass)

Sizes
  • 4" to 26" diameter
  • 2' to 10' length

Materials (Tubeside)
  • Heads 4" to 20" cast iron, 22" to 26" fabricated steel
  • Tube sheets 4" to 26" carbon steel
  • Tubing 3/4" copper .035 wall thickness
  • Steel baffles

Materials (Shellside)
  • Carbon steel pipe with ANSI flanges

Operating Pressures (Tubeside)
  • 150 psig working pressure 4" to 12" diameter with cast iron head
  • 125 psig working pressure 10" to 12" diameter with 2 pass 4" NPT cast iron head
  • 125 psig working pressure 14" to 20" diameter with cast iron head
  • 150 psig working pressure 20" to 26" diameter with fabricated steel head

Operating Temperature (Tubeside)
  • 375°F maximum operating temperature 4" to 26" cast iron or fabricated heads

Operating Pressures (Shellside)
  • 150 psig working pressure carbon steel construction (All sizes)

Operating Temperature (Shellside)
  • 375°F maximum operating temperature carbon steel construction (All sizes)
Double Wall Tube Heat Exchangers
 A double wall unit consists of regular "U" Tube heads and shells. The conversion to a double wall unit requires a tube bundle with double wall tubing and tube sheets. Sizes are 4" to 26" diameter with lengths 24" to 120". All standards and options available for heads and shells can be applied to a double wall unit. The following are the options available for a double wall tube bundle.

Tube Sheets
 Carbon steel (standard)

304 or 316 stainless steel (optional)

Double Wall Tubing
 .040" Copper inner tube .062" Copper outer tube (standard)

.040" 90/10 Cupro-Nickel inner tube .040" 90/10 Cupro-Nickel outer tube (optional)


 Tank Heater Units
 Tank heater unit sizes are 4" to 20" diameter with 24" to 120" lengths. Standard tank heaters are constructed in accordance to ASME requirements for the same pressure and temperature ratings as the "U" Tube Heat Exchangers. A Manufacturer's  Data Report for Pressure Vessels Form No. U-1 is available upon request.
All options available for "U" tube heat exchangers can be applied to tank heaters.
Optional Features
Materials

 Heads
  • Cast bronze 4" to 10" (2 or 4 Pass)
  • Cast stainless steel 4" to 10" (2 or 4 Pass)
  • Fabricated 300 series stainless steel 12" to 20" (2 or 4 Pass)
  • Fabricated steel 4" to 20" (2 or 4 Pass)

Tubesheets
  • Cast bronze 4" to 12" (2 or 4 Pass)
  • Brass plate 14" to 18" (2 or 4 Pass)
  • Type 304 stainless steel 4" to 20" (2 or 4 Pass)
  • Type 316 stainless steel 4" to 20" (2 or 4 Pass)

Baffles
  • Brass 4" to 20"
  • Class 300 stainless steel 4" to 20"

Shell
  • Series 300 stainless steel

 Operating Pressure and Temperature

 Heads
  • 4"-8" Billet head (2 or 4 Pass) 400 psig @ 400°F
  • 10"-16" Bonnet head (2 or 4 Pass) 400 psig @ 400°F
  • 18"-26" Bonnet head (2 or 4 Pass) 300 psig @ 400°F

Shells
  • 4"-16" Water to Water 400 psig @ 400°F
  • 18"-26" Water to Water 300 psig @ 400°F