ONICON F-3100 Series - Manual (Page 23)

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F-3100 Flow Meter Manual 06/14 - 0670-7
Page 23
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WARNING
Installation of this product should only be attempted by qualified tradespersons and must comply
with all local, state and federal building codes.
Liner material
ANSI Class 150 Flange Bolt Tightening Sequence
3.2.6 Installation Instructions
1. Thoroughly clean all flange surfaces removing all traces of any old gasket material or
any adhesive residue.
2. Inspect all flange surfaces for warping, pitting or other surface imperfections that may
prevent a good seal.
3. Use new bolts, nuts and hardened washers. ONICON recommends the use of B7 nuts,
bolts and washers. Prior to installation, lubricate the bolt threads, nuts, washer faces
and the underside of the bolt head with lubricant (Fel Pro C5A or equivalent). This
lubricant is necessary to ensure uniform stress distribution on the sealing surface. Use
care not to get any lubricant on the liner or gasket material.
4. Center the new gasket on the liner surface. Do not allow the gasket to protrude into the
flow stream.
5. Use the torque specifications shown below to determine the recommended final bolt
torque requirements.
6. Using a torque wrench, tighten the bolts in at least three stages (30%, 60% & 100%)
using a repeating pattern sequence shown in the diagrams below.