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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. If you know your performance requirements, you can contact us by requesting a quote.

Basco Type OP Applications:


Sizes 2″ to 8″ diameter; 8″ to 96″ length
Shells HT – Brass | AHT – 316 Stainless Steel
Tubes 1/4″, 3/8″ or 5/8″ diameter tubes available Copper, Admiralty, or 316 S/S Straight tube or U-Tube configurations
Baffles Precision punched Brass or 316 S/S
Heads Cast iron, Bronze, 316 S/S | Fabricated heads available in Steel, 304 S/S, or 90/10 CuNi<
Flow Available in 1-pass, 2-pass, and 4-pass designs
Codes Commercial Standard (non-code) | ASME (available above 4″ diameter)

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.


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