Nut And Bolt/Stud Checks; Gasket Check - Meridian SMOOTHWALL BIN Owner's Manual

Owner's Manual: Smoothwall Bin

6.3.3 Nut and Bolt/Stud Checks:

• Visually examine nuts and bolts/studs before
using them to ensure that they are free from
defects such as corrosion and damaged
threads.
Do not use fasteners with damaged threads.
• Check the length of the bolts to avoid short
bolting or excessive threads. Meridian®
supplies flange bolts with sufficient length to
allow the use of bolt tensioning equipment or
spades, spacers, drip rings and wafer valves,
and the associated extra gaskets.
• Visually examine nuts and bolts/studs after
cleaning to ensure they are free from burrs.
They should be cleaned using a wire brush to
remove any dirt on the threads.
• The nut and bolt material grades should be
correctly identified before they are used.
• Nuts and bolts can only be reused if it is
known that they have not been overloaded or
exceeded their yield point.
• When threading the nut onto the bolt, the
nut identification marking must always point
outwards.
6-4

6.3.4 Gasket Check:

• Do not use sealing compound, grease or other
paste or adhesive on gasket or flange faces.
• Clean gasket seating face using a wire brush.
• Visually examine the gasket, before installation,
to assure they are free from defects.
• Make sure the material is as specified, look for
any possible defects or damage in the gasket
such as folds or creases.
• All Soft material gaskets should be replaced
with new ones whenever an opened joint is to
be closed again.
• Spiral-wound gaskets should be used only
once.
• While inserting the gasket, do not force it into
the gasket seat between the mating flange
faces. Once the gasket is placed, bring the
mating flanges together carefully without
knocking the gasket out of place. Install all
bolts and hand tighten the nuts.
®
3.2020