Grain Systems PNEG-1798 - Manual (Page 23)

7. Procedure
PNEG-1798 Tower and T-Series Dryers Vaporizer 23
Figure 7Q Piping Exiting the Window using U-Bolts and Support Brackets
7.3.7. Vaporizer piping (3/4" and 1-1/4") continues downward through the piping window opening and
then vertically and in parallel with the 2" burner supply line toward the gas train.
7.3.8. Continue piping (3/4" and 1-1/4") downward to the gas train. Anchor the vertical run piping in at
least two (2) locations on the outside of the dryer. Uni-strut and clamps are commonly used for this.
7.3.9. Connect the 3/4" vaporizer line to the gas train liquid supply line. This will allow this section of the
gas train supply piping and associated components to be pressure tested in Figure 7R on Page 24 .
7.3.10. Install a 2" to 1/4" reducing bushing at the end of the 2" to 1-1/4" bell reducer for the connection
of a test gauge. Some test gauges may have a 3/8" MNPT fitting, if so reduce down to allow a for
the test gauge connection size.
(See Figure 7R on Page 24.)
7.3.11. Install the 0-300 PSIG test gauge at the reducer bushing fitting of the preceding step. Verify this
gauge has a 0 PSIG reading.
7.3.12. Proceed to vaporizer high pressure leak testing on Page 25 .