Manual

Code 553542A
Filling unit with pressure gauge connection and pressure setting indicator. 1/2” NPT Male with union x Female threaded
connection. Brass body. Nylon plastic cover. Sliding surfaces in anti-stick plastic. Diaphragm and seals in NBR. Cartridge
removable for maintenance operations. Maximum working temperature 150°F. Maximum inlet pressure 230 psi. Setting range
3÷60 psi. Pressure indicator for pre-adjustment of device, accuracy ±2 psi. Complete with isolating valve, filter and check valve.
Series 573
Backflow preventer with atmospheric vent. Certified to CSA B64.3 and ASSE 1012. 1/2” (3/4”) NPT female threaded
connection with union or 1/2” sweat with union. Brass body, filter in stainless steel, check valve in PSU, diaphragm and
seals in EPDM. Maximum working pressure 175 psi. Maximum working temperature 210°F.
Code 573002A - 573009A
Charging unit complete with backflow preventer 1/2” NPT Female threaded with union or 1/2” sweat with union inlet connection
and 1/2” NPT Female threaded outlet connection. Maximum working temperature 150°F. Maximum inlet pr
essure 175 psi.
We reserve the right to change our products and their relevant technical data, contained in this publication, at any time and without prior notice.
Caleffi North America, Inc.
3883 West Milwaukee Road / Milwaukee, WI 53208
Tel: [phone] / Fax: [phone] / www.caleffi.us
© Copyright 2008 Caleffi
CALEFFI
Shut-off valve
Ball valve
Ballstop
Thermometer
Differential by-pass valve
Flow switch
Zone valve
Pump
Autoflow
Flow meter
Temperature probe
Safety thermostat
Regulator
Expansion vessel
3-way valve
Pressure switch
Control pocket
Gas filter
Gas regulator
Air separator
Fuel shut-off valve
Anti-vibration joint
Sensor pocket
Safety valve
Application diagram
P
A
T
F
TT
T
T
P
A
F
BACKFL
O
W
PRE
V
Series:
5
73
Sizes:
1/2”
-3
/4”
S/
N
VENT
SPECIFICATION SUMMARIES