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Type OP

Basco® Type OP Shell & Tube Heat Exchangers

First introduced in 1962, our Basco OP design has proven to be the preferred TEMA Type AEW shell and 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.



3" to 42" diameter; 12" to 360" length 
(available in 12" increments)


Carbon Steel or 304 Stainless Steel


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


Precision punched Carbon Steel, Brass or Stainless Steel


Channels and bonnets available in Steel


Available in 1-pass and 2-pass designs


API614 Others

Basco Type OP Specifications

Our Basco 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.

O Ring Retainer


  • 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