Brochure

63-8702 107
Backflow Preventers
“DialSet” Boiler Fill Valves
FM911
Pressure regulating valve for automatic control of boiler feed water
and other pressure reducing applications. Especially constructed for
expansion tank mounting.
• DialSet Fill Valve.
• Built in check valve.
Valve Type: DialSet Fill Valve
Pipe Size (inch): 1/2 in. Inlet Size – 1/2 in.
Connection Type: NPT; Inlet – Sweat or Threaded
Ambient Temperature Range: 212°F Maximum (100°C Maximum)
Pressure Range (psi): 8 psi to 50 psi
Materials (Body): Brass
Material Number Application Maximum
Safe Operating
Pressure (psi)
Maximum
Safe Operating
Pressure (kPa)
Weight Description
FM911/U DialSet boiler fill valve pressure reducing valve
15 psi preset and backflow preventer (VF06-100-
SUSUT and BP900 assembly)
150 psi 1034 kPa 4 lb (1.8 kg) 1/2 in. NPT Backflow preventer and DialSet
boiler fill assembly, includes union nut and
both sweat and NPT tailpiece
VF06-100-SUSUT/U DialSet Fill Valve pressure regulating boiler feed
valve with check valve.
150 psi 1034 kPa 1.8 lb (0.8 kg) 1/2 in. sweat union pressure reducing valve,
DialSet boiler fill valve, includes union nut and
both sweat and NPT tailpiece
Backflow Preventers with Intermediate Atmospheric Vent for Heating
Systems
Typical Installation
SUPPLY
AIR GAP
REQUIRED
BP 900
BACKFLOW PREVENTER
BOILER
FEED VALV E
VENT
RETURN
BOILER
INLET
M23854
The BP900 backflow preventer is designed for continuous pressure
applications on small supply lines. It uses an intermediate vacuum
breaker to protect against backflow and back siphonage of
contaminated water into portable water supplies.
• Ideal for boiler feed lines, livestock drinking fountains, trailer
park water hook-ups, laboratory equipment and numerous other
applications
• Suitable for hot or cold water service
• Designed for non-continuous backflow temperatures up to 250°F
and working supply pressures up to 175 psi
Application: Backflow Preventer
Connection Type: NPT
Ambient Temperature Range: 250°F Maximum (121°C Maximum)
Maximum Safe Operating Pressure (psi): 175 psi
Maximum Safe Operating Pressure (kPa): 1207 kPa
Approximate, Dimensions: 4 7/8 in. long x 2 1/2 in. wide (124 mm long
x 63 mm wide)
Approvals, CSA: Certified
Approvals, Others: ASSE Certified
Material Number Pipe Size (inch) Pipe Size (DN) Connection Size (in.) Description Weight
BP900/U 1/2 in. DN15 1/2 in. Double check intermediate vacuum breaker - 1/2 in. NPT 1.2 lb (0.54 kg)