FEBCO 876VST Master Series Configurable Design Double Check Detector Assemblies - Manual (Page 3)

3
NOTICE
All assemblies are tested at the factory for
proper operation and leakage. If the valve
does not pass the field test, it is most
likely due to a fouled check valve. This is not
covered by the factory warranty. The valve
cover(s) must be removed and the check
seats inspected and cleaned. Any damage
or improper operation caused by pipeline
debris or improper installation/start-up is not
included in the factory warranty. In case of
a possible warranty claim, contact your local
supplier or FEBCO Representative. DO NOT
REMOVE THE VALVE ASSEMBLY FROM THE
PIPELINE.
8. The assembly must be protected from
freezing and excessive pressure increases.
Thermal expansion or water hammer can
cause pressure increases. These excessive
pressure situations must be eliminated to
protect the valve and system from possible
damage.
NOTICE
The flange gasket bolts for the gate valves
should be retightened during installation as
the bolts may have loosened due to storage
and shipping.
Typical Installation
18" Min. (450mm)
18" Min.
(450mm)
Refer to
Local Codes
18" Min.
(450mm)
6" Min.
(150mm)
FLOW
N-PATTERN INSTALLATION
FOR THE DC SERIES 870V/
LF870V & FOR THE DCDA
SERIES 876V/ LF876V/ 876VST
(Shown with Strainer)
Figure 2
18" Min. (450mm)
18" Min.
(450mm)
Pipe Support
(Furnished by Customer)
Refer to
Local Codes
FLOW
VERTICAL INSTALLATION FOR THE DC SERIES
870V/LF870V & FOR THE DCDA SERIES 876V/ LF876V/ 876VST
(Shown with Strainer)
Figure 1