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SECTION 2 ITEM 1040
DATED NOVEMBER 2012
SUPERCEDES MAY 2010
MODEL 3DV, GROOVED END
TRIPLE DUTY COMBINATION VALVE
Angle Pattern Model 3DV-A
Straight Pattern Model 3DV-S
1.0 INTRODUCTION:
1.1 The Aurora Model 3DV Triple Duty Combination Valves
are designed for installation on the discharge side of
centrifugal pumps. The Aurora Triple Duty Combination
Valve incorporates three functions in one valve:
• Drip-tight, shut-off valve
• Spring closure design; non-slam check valve
• Flow throttling valve
Aurora Model 3DV-A Triple Duty Combination Valve
Base-Mounted Single Suction
2.0 INSTALLATION:
2.1 The valve should be mounted to a spool piece on the
discharge side of the pump. Spool piece required is based
on a minimum recommended space of 12" for pump sizes
2 x 2 to 6 x 6 and 24" for pump sizes 8 x 8 to 12 x 12.
2.2 It is not recommended to mount a valve directly to the
pump as this could cause undesirable noise in the system.
2.3 Sufficient clearance around the valve should be left for
valve removal or repair.
2.4 Install valve in the direction of the flow arrows on the
valve body.
2.5 The valve can be mounted to flanged equipment using
Anti-Rotation Flange Adapter or industry standard
grooved coupling, suitable for system pressure and
temperatures encountered.
2.6 The Aurora Model 3DV valve bodies have anti-rotation
lugs on the inlet and outlet. These lugs, combined with
the Flange Adapters, provide a ridged rotation free
installation.
2.7 The valve body has been designed to handle the weight of
the pump on vertical in-line installations. The body is not
designed to support the piping weight. It is recommended
that the piping be supported by hangers. Pipe supports
should be provided under the valve and strainer bodies.
3.0 AURORA FLANGE ADAPTER INSTALLATION:
3.1 Position the two halves of Aurora Flange Adapter on the
valve body (Fig. 1) ensuring that the lugs on each half of
the flange adapters are located between the anti-rotation
lugs on the valve body. Insert two bolts of specified size
(Table 1) to secure the halves of the flange adapter to the
valve body (Fig. 2). The gasket cavity should face out to
the adjoining flange.
Fig. 1
"
TYPICAL INSTALLATIONS
Base-Mounted Double Suction
6
Fig. 2
Fig. 3
Vertical In-Line
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