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Flange-Connection Adapters
When flat-face flange connections
are specified, flange-to-groove
adapters are provided (Victaulic Style
741 for 150 psig systems), Figure 17.
The adapters are shipped bolted to
one of the chiller end-supports
(Figure 18). Adapter weights are
given in Table 6. 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.) is
recommended to attenuate vibration
and/or prevent stress at the water
box connections.
Flange adapters are not provided for
units with 300 psig water boxes.
(These require welded flanges).
Table 6 – Installation Data for CDHF 150 PSIG Flange Adapters
Nom. Size
(In/mm)
16/400
18/457
20/508
*Bolt size for conventional flange-to-flange connection. Longer bolts are required when flange washer must be used.
CDHF-SVN01B-EN
Water Piping
All flange-to-flange assembly bolts
must be provided by the installer.
Bolt sizes and number required are
given in Table 6. The four draw-bolts
needed for the 16-inch Style 741 (150
psig) adapters are provided. The
Style 741, 150 psig 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.
Note: The flange-adapter gasket
must be placed with the color coded
lip on the pipe and the other lip
facing the mating flange.
CAUTION
Piping Connection Leaks!
To provide effective seal, gasket-
contact surfaces of adapter must be
free of gouges, undulations or
deformities.
Assy Bolt Size
(In)*
1 x 4-1/2
1.13 x 4.75
1.13 x 5.25
No. Assy
Bolt Pattern
Bolts Req.
Dia. (In/mm)
16
16
20
™
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 lips and outside of gasket.
2. Install Gasket: Place gasket over
pipe end, being sure gasket lip
does not overhang pipe end. See
Figure 17 for gasket configuration.
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 Vic-Flange
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.
Weights
21.25/540
90.0/40.8
22.75/578
100/45.4
25.00/635
120/54.4
(lbs/kg)
31
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