AERCO Belimo F7...HD/HDU Series Valve - Manual (Page 38)

800-543-9038 USA 866-805-7089 CANADA 203-791-8396 LATIN AMERICA
38
0
7/10 - Subject to change. © Belimo Air
controls (USA), Inc.
Storage of Butterfly Valve Assemblies
● Assemblies must be stored indoors, protected from the elements.
● Materials received on job sites that have long installation lead
times should receive extra protection from construction damage.
● Resilient seats must be protected from abrasion, cutting and nick-
ing, as this will damage the liner and may cause flange area leaks.
● Electric actuators cannot be stored in wet, damp or caustic areas.
● Do not store construction material on top of valve assemblies.
Installation Practices
● HD(U) series butterfly valves are designed to be installed between
ANSI 125/150 flat-faced, raised face, slip-on or weld neck flanges.
● Valve should be installed a minimum of 10 pipe diameters
from upstream or downstream elbows, strainers, pumps, etc.
● For chilled water, condenser water or hot water applications, the
valve should be installed with the stem in a vertical orientation,
with the actuator mounted above the valve.
● For applications in which there is a possibility of sediment in the
flow, the valve should be installed with the stem in a horizontal
position and the bottom of the disc should close FROM the down-
stream side, rather than from the upstream side.
● Make sure the flange faces are clean and free of rust, scale and
debris to prevent damage to the liner face.
● Do NOT use flange gaskets on HD(U) series BF valves. (Fig. 1a)
● Follow the recommended flange bolting sequence. (Fig. 8, pg. 85)
● When installing in Victaulic piping systems, use Victaulic 41 series
flange nipples.
Installation using Welded Flanges
● Mount flanges on both sides of valve body and install bolts to
properly align valve body and both flanges.
● Install the valve with the disc in the “Almost Closed” position (Fig. 1)
● Do not use any flange gaskets (Fig. 1a)
● Make sure the valve liner and flange internal diameters are in
alignment. (Fig. 2)
● Take valve body / flange pair assembly and align with piping ends.
● TACK weld the flanges to the piping in several places. (Fig. 3a)
Do NOT seam weld at this time!
● Remove the lug bolts and carefully remove the valve body from
the flanges.
● Seam weld the entire flange / piping connection for both flanges.
(Fig 3b)
● Let the piping components cool completely before re-inserting the
valve body. (Fig. 4)
● WARNING! Seam welding with the valve body installed between !
the flanges can damage the liner due to heat migration through
the flange to the valve body.
Installation Recommendations
F6…HD(U), F7…HD(U) Series Butterfl y Valves
HD(U) Series Butterfl y Valves