ITT Industries Bell & Gossett B-38 Instruction Manual

Bell & Gossett
WARNING LABEL
PART NO. V56871
INSTALLED IN THIS
LOCATION. IF MISSING
IT MUST BE REPLACED.
INSTALLER: PLEASE LEAVE THIS MANUAL FOR THE OWNER'S USE.
DESCRIPTION
The Bell & Gossett Pressure Reducing Valve is designed for
filling hot water boilers and associated piping systems to a
properly controlled pressure after boiler installation or sys-
tem servicing. It is not a safety device and is not intended
to be used as a water feed valve to control boiler water
at a safe operating level. They are factory set at specified
limits although adjustment is easily made. They are equipped
with a built-in strainer and low inlet pressure check valve.
SAFETY
INSTRUCTIONS
This safety alert symbol will be used in this manual to
draw attention to safety related instructions. When used,
the safety alert symbol means ATTENTION! BECOME
ALERT! YOUR SAFETY IS INVOLVED! FAILURE TO FOL-
LOW THESE INSTRUCTIONS MAY RESULT IN A SAFETY
HAZARD.
SIZES & PERFORMANCE
MODEL SIZE
NUMBER INCHES
B-38 /
1
2
NPT
B 7-12 /
3
4
UNION
1 /
B-38TU
2
NPT/SWEAT
FB-38 / NPT
1
2
/ UNION
1
FB-38TU
2
NPT/SWEAT
6
/
1
2
NPT
7 /
3
4
Maximum Flow 5 1 / -6 GPM at 125 PSIG inlet Pressure.
2
TEMPERATURE AND PRESSURE LIMITS
Maximum Operating Temperature: 225 °F.
Maximum Working Pressure: 125 PSIG
FACTORY ADJUSTABLE
SETTING RANGE
PSIG PSIG
12 10-25
45 25-60
INSTRUCTION MANUAL
Reducing Valves
Installation, Operation &
Service Instructions
B&G AUTOMATIC
AIR VENT
B&G PRESSURE
REDUCING VALVE
SHUT-OFF
VALVE
C.W. FILL
FLOW
B&G RELIEF
VALVE
OPTIONAL
BOILER
SIDE OUTLET
BOILER
CONNECTION
RETURN
TYPICAL INSTALLATION
INSTALLATION INSTRUCTIONS
The Pressure Reducing Valve must be installed with the flow
arrow on the body pointing in the direction of flow. A shut-off
valve must be installed on the city water side of the Pressure
Reducing Valve. If the Pressure Reducing Valve is not
equipped with a fast fill feature, a by-pass may be used for
rapid filling, but it must remain closed during normal system
operation.
For safe boiler operation, installation of a low water cut off,
adequate burner safety control and a properly installed float
operated water feed control is recommended. Examples of
these types of control devices include the McDonnell & Miller
No. RB-24 and RB-120 low water cut offs and the No. 47-2
combination feeder and low water cut off.
Uncontrolled firing and overheating of boiler and boiler com-
ponents may occur in a hot water heating system that is
installed without adequate safety controls. The installation of
a functioning air control system and thermal expansion com-
pensation system is required for the proper operation of a
hot water heating system.
V55999
REVISION L
B&G BOOSTER
B&G IN-LINE
B&G
AIR SEPARATOR
FLO-CONTROL
VALVE
TO
SYSTEM
B&G MODEL "B"
OR "DV" ASME TANK
Bell & Gossett