Figure 7. Typical Shipping Location For Flange; Flange-Connection Adapters - Trane CVHE Installation Manual

Flange-Connection Adapters

When flat-face flange connections
are specified, flange-to-groove
adapters are provided (Victaulic
Style 741 for 150 psig or 1035 kPa
systems; Style 743 for 300 psig or
2068 kPa systems). Welded flanged
connections are available only as a
design special unless ordered as
such, flange to groove adapters are
provided if flat faced flange
connections are specified. The
adapters are shipped bolted to one
of the chiller end-supports (Figure 7).
Adapter weights are given in Tables
1 and 2, The flange adapters provide
a direct, rigid connection of flanged
components to the grooved-pipe
chiller water box connections.
In this case, the use of flexible type
connectors (i.e., braided steel,
elastomeric arch, etc.) are
recommended to attenuate vibration
and prevent stress at the water box
connections. Flange adapters are not
provided for CVHE/F/G units with 300
psig or 2068 kPa water boxes that
have 14" [356 mm] or 16" [406 mm]
piping connections.
All flange-to-flange assembly bolts
must be provided by the installer.
Bolt sizes and number required are
given in Tables 1 and 2.
The four draw-bolts needed for the
14" [356 mm] and 16" [406 mm]
Style 741 (150 psig or 1035 kPa)
adapters are provided. The Style
741, 150 psig or 1035 kPa flange
adapter requires a smooth, hard
surface for a good seal.
Connection to other type flange
faces (i.e., raised, serrated, rubber,
etc.) will require the use of a flange
washer between the faces. Refer to
the flange adapter manufacturer's
guidelines for specific information.
14
Water Piping
The Style 743, 300 psig or 2068 kPa
flange adapters are designed to
mate with raised-face flanges. They
can be used with flat-faced flanges,
™
however, if the raised projections on
the outside face of the adapter are
removed (Figure 9.)
Note: The flange-adapter gasket
must be placed with the color-coded
lip on the pipe and the other lip
facing the mating flange.
Important: Gasket-contact surfaces
of adapter must be free of gouges,
undulations, or deformities. Failure
to do so may not provide an effective
seal.
Victaulic Gasket Installation
1. Check gasket and lubricate: Check
gasket supplied to be certain it is
suited for intended service. Code
identifies gasket grade. Apply a
thin coat of silicone lubricant to
gasket tips and outside of gasket.
2. Install Gasket: Place gasket over
pipe end, being sure gasket lip
does not overhang pipe end. See
Figure 8 for gasket configuration.

Figure 7. Typical shipping location for flange

3. Join pipe ends: Align and bring
two pipe ends together and slide
gasket into position centered
between the grooves on each
pipe. No portion of the gasket
should extend into the groove on
either pipe.
4. Apply Vic-Flange ™ : Open fully and
place hinged flange around the
grooved pipe end with the circular
key section locating into the
groove.
5. Insert bolt: Insert a standard bolt
through the mating holes of the
Vic-Flange to secure the flange
firmly in the groove.
6. Tighten nuts: Tighten nuts
alternately and equally until
housing bolt pads are firmly
together (metal to metal).
Excessive nut tightening is not
necessary. Note: Uneven
tightening may cause gasket to
pinch.
CVHE-SVN02D-EN