Bell & Gossett V51019 User Manual
BELL & GOSSETT
INSTALLED IN THIS LOCATION. IF MISSING, IT MUST BE REPLACED.
INSTRUCTION MANUAL
V51019
WARNING LABEL PART NO. V56871
™
ISO-FLO
Accessories
Installation, Operation, & Service Instructions
INSTALLER: PLEASE LEAVE THIS MANUAL FOR THE OWNER’S USE.
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
INSTRUCTIONS MAY RESULT IN A SAFETY HAZARD!
DESCRIPTION
ISO-FLO Accessories includes ball type shutoff valves, inline
Y-type strainers and hook up hoses. Ball Valves are of bronze
construction with TFE seals. Y-Strainers are of bronze construction with a stainless steel strainer. Hoses are EPDM
rubber with a braided stainless steel jacket.
© COPYRIGHT 1996
Bell & Gossett
Morton Grove, IL, U.S.A.
OPERATIONAL LIMITS
(These products are designed for use with water or glycol
products only in hydronic systems.)
Accessory Temp ˚F (˚C) Pressure psi (kPa)
Shutoff valves (NPT) 250 (121) 300 (2068.5)
Shutoff valves (sweat) Based on solder type ASTM Std. B16.18
Strainers (NPT) 250 (121) 300 (2068.5)
Strainers (sweat) Based on solder type ASTM Std. B16.18
Hose 1/2" 210 (99) 375 (2585.6)
Hose 3/4" 210 (99) 300 (2068.5)
Hose 1" 210 (99) 290 (2000)
Hose 11/4" 210 (99) 217 (1496)
Hose 11/2 210 (99) 145 (1000)
WORKING PRESSURE & TEMPERATURE LIMITS
(SOLDER TYPE LIMITS FOR ANSI STD. B16.18)
INSTALLATION INSTRUCTIONS
(STRAINERS AND SHUTOFF VALVES)
1. The Shutoff Valves are bi-directional and can be installed in
piping with flow in either direction.
2. The Y-Strainers must be installed with the flow in the direction of the flow arrow on the strainer body.
3. When installing either the shutoff valves or the strainers,
space around the units must be provided to move the valve
handle to the shutoff position and to remove the strainer
from the strainer body for cleaning.
4. The Y-Strainer must be installed with the strainer chamber
down to prevent air binding and also to allow accumulated
dirt to be blown down from the strainer. It is a good idea to
install a blowdown line and a shutoff valve to the strainer Y
connection so that accumulated dirt can be removed.
5. When soldering the sweat type shutoff valves or sweat type
strainer into the piping, make sure that valves are not
heated above 500˚F (260˚C). Wet rags should be used to
keep the valve body temperatures down to prevent damage
from excessive heat.
• Use a torch with a sharp pointed flame.
• Clean tube ends and shutoff valve or strainer connections
thoroughly.
• Use 95-5 (Tin-Antimony), 50-50 or 60-40 (Tin-Lead)
solders only, and a good grade of flux.
Check soldered connections for leaks. Resolder if necessary.
6. For NPT type joints apply pipe compound conservatively to
male connecting fittings only.
Check connections for leaks.
INSTALLATION INSTRUCTIONS
(HOSE ASSEMBLIES)
1. The hose assemblies are supplied with a male NPT pipe
connector on one end and a union coupling and male NPT
adapter on the other end. For
1
/2" through 1" sizes the male
NPT adapter is furnished with a metal to metal joint which
connects to the union coupling. 1
1
/4" and 11/2" sizes are supplied with a fiber gasket instead of a metal to metal joint with
a union coupling.
2. When installing hoses, slack must be provided and the bend
radius must equal or exceed those shown below.
Hose Size Minimum Bend Radius
1
/2" 3" (76.2 mm)
3
/4" 5" (127 mm)
1" 6" (152.4 mm)
1
1
/4" 71/2" (190.5 mm)
1
1
/2" 9" (228.6 mm)
3. Pipe joint compound must be sparingly applied to the male
NPT threads only. Do not apply joint compound to the
adapter threads that mate with the union connector.
4. Hose must not be twisted while it is being installed. The
union joint must be tightened last and it must be held with
two wrenches to prevent the hose from twisting.
2
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 result in moderate personal injury and/or
property damage.
CAUTION: The use of Teflon impregnated pipe
compound and Teflon tape on pipe threads provides
lubricity. Care should be taken to prevent overtightening
which may damage the shutoff valves or strainers. Failure
to follow these instructions can result in moderate personal injury and/or property damage.
WARNING: Damage to the shutoff valves or strainers
or failure of solder sealing joints may occur if the
solder joint operational limits are exceeded. This can result in water leakage. Failure to follow these instructions
could result in serious personal injury and/or property
damage.
Maximum Maximum
Limitations Limitations
Type of
1
/2" - 1" 11/4" - 11/2"
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)
50-50 and 200 (1379) 100 (38) 175 (1207) 100 (38)
60-40 150 (1034) 150 (66) 125 (862) 150 (66)
Tin-Lead 85 (586) 250 (121) 75 (517) 250 (121)
CAUTION: Heat associated with the use of silver
solder may damage the shutoff valves or the strainers
voiding the warranty. Do not use silver solder. Failure to
follow these instructions can result in moderate personal
injury and/or property damage.
WARNING: These hoses are designed for use with
water and glycol based fluids in hydronic systems.
Do not use hydrocarbon based fluids or other fluids in
these hoses. Failure to follow these instructions could
result in serious personal injury, death and/or property
damage.
WARNING: Hose assemblies may rupture if slack is
not provided or the bend radius is less than required. Make sure that these requirements are provided.
Failure to follow these instructions could result in serious
personal injury, death and/or property damage.
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