The GYROLOK Heat Exchanger Tee is a tee fitting in which the process tubing passes through the jacket tubing. There are 3 standard items, and other fractional and metric sizes are by special order, with availability on inquiry. It can also be built from standard union tees and full port reducers.


| Type | Heat exchanger tee (process tubing inserted into the jacket tubing) |
| Standard Items | 4XT2[ ]BR4 (jacket tube 1/4", process tube 1/8", branch tube 1/4") / 8XT4[ ]BR4 (jacket tube 1/2", process tube 1/4", branch tube 1/4") / 8XT4[ ]BR8 (jacket tube 1/2", process tube 1/4", branch tube 1/2") |
| Part Number Rule | [jacket and tubing O.D.] XT [process tubing O.D.] [material] BR[branch tubing O.D.] (size numbers in sixteenths of an inch) |
| Union Tee and Full Port Reducer Version | A heat exchanger tee can be created with standard union tees and full port reducers so that the process tubing passes through the jacket tubing. To order a full port reducer, add the letter T to the core reducer part number (example: 8RT12 316) |
| Special Order | Other fractional and metric sizes by special order, availability on inquiry: specify "Heat Exchanger Tee", the quantity and the desired tube connection sizes |
| Material (GYROLOK series) | Material code in the [ ] of the part number: brass BR, 304/304L stainless steel, 316/316L stainless steel, Monel M, Hastelloy C-276 HC, Duplex 2205 DX3, Inconel Alloy 625, Inconel Alloy 825, Super Duplex 2507 D50, titanium TI, 254 SMO 6MO (available materials may vary by fitting type and size) |