Basco Type OP Heat Exchangers

First introduced in 1962, the Basco OP design has proven to be the preferred TEMA Type AEW shell & tube heat exchanger in the market. The “OP”, or “O-Ring Protected” design features removable tube bundle, nozzle location flexibility, and a unique threaded O-ring retainer that permits removal of the reversing bonnet without disturbing the piping or draining the shellside fluid. Removal of the channel cover permits full inspection and cleaning of the tube side.
API Basco Type OP Heat Exchanger
Sizes: 3″ to 42″ diameter; 12″ to 360″ length (available in 12″ increments)
Shells: Carbon Steel or 304 Stainless Steel
Tubes: 3/8″, 5/8″, or 3/4″ diameter tubes available Carbon Steel, Copper, Admiralty, 90/10 or 70/30 CuNi, 304 S/S or Titanium.
Straight tube configurations
Baffles: Precision punched Carbon Steel or Brass
Heads: Channels and bonnets available in Steel or Cast Iron
Flow: Available in 1-pass, 2-pass, and 4-pass designs
Codes: ASME             ABS
TEMA             USCG
API614           Others
Steel or Cast Iron Channels. Tubesheets available in Carbon Steel, Stainless Steel, NRB, 90/10 or 70/30 CuNi or Titanium tubesheets. Tubes available in Carbon Steel, Copper, 90/10 or 70/30 CuNi, Stainless Steel, Admiralty or Titanium. Tubes are roller expanded. Seal welding and grooving available. Tubes are available with lo-fin enhancements. Supports movable, fabricated with rod to 16"; fixed cradles over 16" diameter. Baffles precision punched baffles assure effective circulation by providing minimum clearances between the tubes and tube holes. Baffle cuts and spacing for each diameter are consistent with best practices. Shells available in Steel and Stainless Steel. Minmum clearances between shell and baffles reduce by-pass and maximize heat transfer.
Basco’s Double “O” Ring Seal Protection
Permits the bundle to expand and contract without strain or intermixing of shell and tubeside fluids. O-Rings retain compression and are unaffected by vibration and temperature changes. Telltale holes reveal any leakage.Special Feature
The unique construction of the Basco OP permits inspection and maintenance of the tubeside without draining the shellside or disturbing the piping.
API Basco Type OP Floating Tubesheet Diagram
Typical applications for the Basco Type OP include:
  • Compressed air
  • Steam or gas turbine oil
  • Hydraulic oil
  • Lube oil
  • Bearing water
  • Jacket water
  • Gland seal condensers
  • Condensate cooling
  • Ship board and marine engines
For complete information on this product visit our Literature section for a free download of the Basco Type OP brochure.