Bell & Gossett V57895B Venturi/Ball Valve Combination MV - Manual

OPERATIONAL LIMITS
WORKING PRESSURE & TEMPERATURE LIMTS
(SOLDER TYPE LIMITS FOR ANSI STD. B.16.18)
NPT
Maximum Operating Pressure 400 psig (2758 kPa)
Maximum Operating Temperature 250°F (121°C)
MAXIMUM MAXIMUM
LIMITATIONS LIMITATIONS
TYPE OF 1/2" – 1" 1 1 /
4
" – 2"
SOLDER PRESSURE TEMP PRESSURE TEMP
PSI (kPa) °F (°C) PSI (kPa) °F (°C)
95-5 300 (2069) 200 (93) 300 (2069) 175 (79)
TIN- 250 (1724) 225 (107) 250 (1724) 200 (93)
ANTIMONY 200 (1379) 250 (121) 175 (1207) 250 (121)
DESCRIPTION
The Bell & Gossett Model MV is a combination calibrated bal-
ance, commissioning and positive shutoff valve for use in
HVAC systems. An efficient brass venturi design provides
accurate flow balancing with minimal system pressure loss.
Valves are furnished with two readout valves (pressure and
temperature ports), standard port ball valve with memory
stop, and a hanging ID tag for commissioning. A variety of
end connections are available on both the fixed and union
ends.
Venturi/Ball valve provides highly accurate flow measurement
capabilities.
INSTALLATION INSTRUCTIONS
1. For installing Sweat Connections:
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, first adjusting the valve in the
full open position, then wrap the valve with a cool wet
rag and then direct the flame with care to avoid subject-
ing the valve to excessive heat. Allow the valve to cool
before touching or operating.
e) Check the soldered connection for leaks.
Venturi/Ball Valve Combination
Model MV
WARNING: Label Part No. V56873
installed in this location (under
Bell & Gossett). If missing it must
be replaced.
SAFETY
INSTRUCTION
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 FOLLOW THESE IN-
STRUCTIONS MAY RESULT IN A SAFETY HAZARD.
INSTALLER: PLEASE LEAVE THIS MANUAL FOR THE OWNER’S USE.
WARNING: Damage to the Venturi/Ball valve or failure
of solder sealing joints may occur it these operational
limits are exceeded. This can result in water leakage.
Failure to follow this instruction can cause serious per-
sonal injury and/or property damage.
INSTRUCTION MANUAL
V57895B