CALEFFI 510 Series Installation, Commissioning And Servicing Instructions

CALEFFI
www.c leffi.com
Flow check valve
Installation, commissioning and servicing instructions
S FETY 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.
CAUTION: ll work must be performed by qualified personnel trained in the
proper application, installation, and maintenance of systems in accordance
with all applicable codes and ordinances.
Function
The function of the check-valve is to prevent natural water
circulation in systems where the temperature is controlled by a
room thermostat switching the pump.
Natural water circulation often results in the room temperature
climbing higher than that preset by the thermostat, when a check
valve is not installed.
The function of the check valve is to prevent thermal-syphoning of
the water to radiators. It effectively separates the boiler from the
system, opening only when the pump is running.
Technical Characteristics
Connections:
Material: body
seals
spring
Maximum working pressure:
Maximum temperature:
Opening pressure:
Medium:
Max percentage of glycol:
38478.01
510 Series
3/4" NPT female
brass
EPDM
stainless steel
150 psi (10 bar)
240°F (115°C)
0.3 psi (0.02 bar)
water, glycol solutions
50%