Function
The hydraulic separator is a device which makes the primary
and secondary circuits connected to it independent, and can be
used on hot and chilled water systems. The separator is supplied
with an air vent and check valve assembly to provide automatic
discharge of the air in the circuits, and a drain valve for removing
impurities that collect at the bottom of the unit.
These items are designed for use in closed hydronic systems. Do not
use in plumbing applications. These items do not meet the low-lead
plumbing standards of U.S. and Canada.
Product range
548 series
Hydraulic separator in steel with union connections, vent and drain.........................
connections 1", 1¼", 1½", 2" NPT female union
connections 1", 1¼", 1½", 2" sweat union
connections 1", 1¼", 1½", 2" press union
no tailpieces, separately source, field install 1" to 2"
548 series
Hydraulic separator in steel with flanged connections, vent, drain and insulation............
connections 2", 2 1/2", 3", 4" ANSI
NA548 series Hydraulic separator in steel with flanged connections, vent, drain and insulation,
ASME and CRN................................................connections 2", 2 1/2", 3", 4" ANSI
NA548 series Hydraulic separator in steel with flanged connections, vent, drain and floor supports,
ASME and CRN............................................................connections 5" to 14" ANSI
(consult Caleffi for CRN status on size 14")
Hydro Separator
Installation, commissioning and servicing instructions
38505.06
1
© Copyright 2021 Caleffi
548, NA548 Series
www.caleffi.com
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.
WARNING:
This product can expose you to chemicals including lead, which
is known to the State of California to cause cancer and birth defects or other
reproductive harm. For more information go to www.P65Warnings.ca.gov.
