Thank you for choosing Hydro-Core.
This valve kit was designed to facilitate installation and regular maintenance of your boiler. It was
not designed for installations exposed to subfreezing conditions. Drain valves should remain closed
during normal operation. Do not rely on the drain cap to stop the water from draining. When draining,
always remove drain caps slowly to ensure that no pressure exists.
IMPORTANT: Follow all federal/national, state and local codes when installing or performing work on
systems. All parts are covered by a lifetime warranty against manufacturing defects provided they
are installed by a licensed plumber and operated under normal working conditions. Disassembling
parts other than the unions, strainer and handle will void this warranty. If you have any questions or
comments, please contact us at (800) 225-9529 or visit us on the web - www.webstonevalves.com.
Typical System Overview
Floor standing, side mount boiler with Complete Near Boiler Piping Kit.
SYSTEM
PURGING VALVE
Rotating Flange
Ball Valve
Connection
D
BOILER LOOP
CIRCULATOR
PUMP
Rotating Flange
"Y" Strainer
C
SYSTEM SUPPLY
PIPED ASSEMBLY
A
MANIFOLD
Union Ball Valve
Connection
B
SYSTEM RETURN
PIPED ASSEMBLY
E
UNION
CONNECTION
System Supply Port /
Boiler Outlet
System Return Port /
Boiler Inlet
UNION
CONNECTION
F
AIR
SEPARATOR
PRESSURE
BACKFLOW
PREVENTER
REDUCING
VALVE
BOILER
INSTALLATION
Complete Near Boiler Piping Kit
Installations ........................................... 4
Near Boiler Component Kit
Installations ........................................ 2-3
System Overview .................................... 1
SERVICING
Boiler Heat Exchanger
Descaling/Cleaning ................................ 8
SECONDARY SYSTEM
CIRCULATOR PUMP
W/ROTATING
FLANGE & DRAIN
EXPANSION
TANK
Floor standing, side
mount boiler with
Near Boiler Component Kit.
A
MANIFOLD
Rotating Flange
Ball Valve
Connection
D
BOILER LOOP
CIRCULATOR
PUMP
H
FLANGED PUMP
CONNECTION
UNION
BODY
J
Union Ball Valve
Connection
HYDRO-CORE
G
END
I
E
UNION
UNION
BODY
CONNECTION
System Supply Port /
Boiler Outlet
System Return Port /
Boiler Inlet
UNION
CONNECTION
F
1
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