Bell & Gossett V59074B Low Flow Circuit Sentry Model ACL Flow Limiting Valves - Manual (Page 2)

DESCRIPTION
Low Flow Circuit Sentry Model ACL valve is designed to
automatically control the flow in piping systems to a
selected preset limit. As pressure differential increases, a
cartridge inside the valve body reduces the flow area to
accurately maintain the preselected flow rate.
Flow Operating Range: 0.25 – 3.8 GPM
INSTALLATION INSTRUCTIONS
Low Flow Circuit Sentry Model ACL Flow Limiting Valves
are uni-directional valves and can be installed in most
orientations; Low Flow Circuit Sentry valves should be
mounted in the return pipe where temperatures are
lower and where the sealing gland is less affected by pipe
strain. Installation of strainers and isolation ball valves
is recommended. Be sure to install the Low Flow Circuit
Sentry ACL valve with the arrow pointing in the
direction of flow. Provide enough space around the
valve to ensure the flow cartridge can be removed for
flow adjustment or system commissioning.
LOW FLOW CIRCUIT SENTRY MODEL ACL VALVES
WITH SWEAT CONNECTIONS
For installing sweat connections, make sure that the flow
limiting cartridge has not yet been installed in the valve.
When confirmed, proceed as follows:
a) Clean tube ends and valve connections thoroughly per
good piping practices with a fine grade emery cloth or
fine grit sandpaper.
b) For soldering, use 95-5 (Tin-Antimony) solder and a
good grade of flux.
c) Use a torch with a sharp pointed flame.
d) When sweating the joints, adjust the valve to the full
open position, then wrap the valve with a cool wet rag
and then direct the flame with care to avoid subjecting
the valve to excessive heat. Allow the valve to cool before
touching or operating.
e) Check the soldered connection for leaks.
WARNING: Use of improper procedures to
sweat valve model with union connection
into system can damage valve. Before
installing sweat union connection to valve,
remove the union nut and O-ring from the valve body,
then union tailpiece with union nut must be sweated
(soldered) into place. Failure to follow these
instructions could result in property damage and/or
moderate personal injury.
CAUTION: Heat associated with the use of
silver solder may damage valve components
and void the product warranty. Do not use
silver solder. Failure to follow these
CAUTION: Excessive use of solder or flux
may result in damage to the shutoff valve
seat and ball. Do not use excessive solder or
flux. Failure to follow these instructions can
LOW FLOW CIRCUIT SENTRY MODEL ACL VALVES
WITH NPT CONNECTIONS
Apply pipe compound conservatively to male connecting
fittings only. After installation, check all the joints for
leakage and re-tighten if necessary.
CAUTION: The use of PTFE impregnated
pipe compound and PTFE tape on pipe
threads provides lubricity. Care should be
taken to prevent over tightening which may
instructions could result in property damage and/or
moderate personal injury.
result in moderate personal injury and/or property
damage.
damage the valve body. Failure to follow these
instructions can result in personal injury and/or
property damage.
LOW FLOW CIRCUIT SENTRY MODEL ACL VALVES
FLOW LIMITING CARTRIDGE INSTALLATION