FPD350 TorbarAveraging pitot tubes 2 Initial Installation16 OI/FPD350–EN Rev. H2.14 Threaded Model FPD350.H7.E2Install the Torbar as follows:1. Select the required insertion position and mark the pipe.2. Drill a 6 mm (0.24 in) pilot hole at the marked position,then drill to 28 mm (1.1 in).3. Align the threaded fitting concentrically over the hole andtack-weld in place.4. Using a suitably sized and threaded length of pipe, checkthe threaded fitting is concentric and aligned correctly –see Fig. 2.2, page 4.5. Weld the threaded fitting to the pipe.6. Measure exactly 180° around the pipe circumference andmark the pipe.7. Repeat steps 2 to 5.8. Referring to Fig. 2.13:a. Apply suitable sealant to the close nipple A andisolation valve B and fit them to the threaded fittingC. Tighten securely.b. Ensure 6 packing rings are located correctly insidepacking gland D.c. Ensure the drawbolt (or optional geared) retractionassembly E is in the fully retracted position.d. Fit pressure chamber F, complete with packinggland D and retraction assembly E, to isolationvalve B, using appropriate sealants wherenecessary.e. Insert the Torbar into packing gland D.f. Turn the Torbar until the indentation marks on thehead are positioned downstream of the flow – seeFig. 2.1, page 3.g. Tighten the packing gland bolts G equally andevenly until the packing gland is fully sealed,ensuring the Torbar is able to slide through it.h. Open isolation valve B.i. Drawbolt retraction assembly only – turn eachdrive-nut H clockwise alternately until the Torbarpasses through isolation valve B and protrudesfrom the threaded fitting on the opposite side of theprocess pipe by 25 mm (1.0 in). When the Torbar isinserted fully, ensure the drawbolts J and stopnuts K are in the positions shown.j. Drawbolt retraction assembly only – tighten locknuts L.k. Optional geared retraction assembly only – turnthe integral handle clockwise until the Torbarprotrudes from the threaded fitting on the oppositeside of the process pipe by 25 mm (1.0 in).l. Apply appropriate sealant to the threads of supportplug M.m. Screw support plug M into threaded fitting N andtighten, ensuring that it contacts the Torbar.n. Fully tighten packing gland bolts G, ensuring theTorbar does not turn. Check for leaks.9. Check the Torbar is installed correctly and aligned.10. Pressurize the process pipe and check for leaks.Warning. Threaded model FPD350.H7.E2 is supported inthe process pipe at the Torbar tip as well as at the entrypoint into the pipe, therefore it cannot be 'Hot-Tap' installed.Before drilling into the pipe, reduce the pipe pressure to asafe level and remove all hazardous material. Beforeinserting the probe, you must also stop the flow completely,to ensure that the probe can correctly engage with the endsupport.Note. During step l, turn drive nuts H equally andevenly to prevent binding.Note. The gear retraction handle is supplied looseand can be fitted to either side of the gears.However, ensure the handle is fitted so that theTorbar is inserted when the handle is turnedclockwise.