36
CVHE-SVX005B-EN
NNootteess::
• Refer to the coupling manufacturer’s
guidelines for specific information
concerning proper piping system design
and construction methods for grooved
water piping systems.
• Flexible coupling gaskets require proper
lubrication before installation to provide a
good seal. Refer to the coupling
manufacturer’s guidelines for proper
lubricant type and application.
Flange-connection Adapters
NNOOTTIICCEE
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When flat-face flange connections are specified, flange-
to-groove adapters are provided (Victaulic® Style 741
for 150 psig [1034.2 kPaG] systems; Style 743 for
300 psig [2068.4 kPaG] systems). The adapters are
shipped screwed to one of the chiller end-supports.
Adapter descriptions are given in the tables in
“Victaulic Gasket Installation,” p. 36. The flange
adapters provide a direct, rigid connection of flanged
components to the grooved-pipe chiller waterbox
connections.
Figure 17. Typical shipping location for flange
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
waterbox connections. Flange adapters are not
provided for CVHE, CVHF, or CVHG CenTraVac™
chillers with 300 psig (2068.4 kPaG) waterboxes that
have 14 in. (355.6 mm) and 16 in. (406.4 mm) piping
connections.
All flange-to-flange assembly screws must be provided
by the installer. Hex head screw sizes and number
required are included in the tables in “Victaulic Gasket
Installation,” p. 36. The four draw-bolts needed for the
14 in. (355.6 mm) and 16 in. (406.4 mm) Style 741
(150 psig [1034.2 kPaG]) adapters are provided. The
Style 741 (150 psig [1034.2 kPaG]) flange adapter
requires a smooth, hard surface for a good seal.
Connection to other type flange faces (i.e., raised,
serrated, rubber, etc.) requires the use of a flange
washer between the faces. Refer to the flange adapter
manufacturer’s guidelines for specific information.
The Style 743 (300 psig [2068.4 kPaG]) flange adapters
are designed to mate with raised-face flanges. They
can be used with flat-faced flanges, but only if the
raised projections on the outside face of the adapter
are removed; refer to the following figure. The flange-
adapter gasket must be placed with the color-coded lip
on the pipe and the other lip facing the mating flange.
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Figure 18. Modifying 300 psig (2068.4 kPaG) flange
adaptors for flat-faced flange application
Remove to mate
to flat-faced
flanges
Victaulic Gasket Installation
1. Inspect supplied gasket 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, placing gasket over pipe end and
making sure gasket lip does not overhang pipe end.
Refer to the following figure for gasket
configuration.
3. 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. Open fully and place hinged Victaulic® flange
around the grooved pipe end with the circular key
IInnssttaallllaattiioonn:: WWaatteerr PPiippiinngg
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