1
MANIFOLD
SYSTEM
PURGING VALVE
BOILER
EXPANSION
TANK
AIR
SEPARATOR
W/ROTATING
FLANGE & DRAIN
PRESSURE
REDUCING
VALVE
BACKFLOW
PREVENTER
SECONDARY SYSTEM
CIRCULATOR PUMP
UNION
CONNECTION
UNION
CONNECTION
BOILER LOOP
CIRCULATOR
PUMP
SYSTEM RETURN
PIPED ASSEMBLY
SYSTEM SUPPLY
PIPED ASSEMBLY
D
A
C
B
E
F
System Return Port /
Boiler Inlet
System Supply Port /
Boiler Outlet
Union Ball Valve
Connection
Rotating Flange
Ball Valve
Connection
Rotating Flange
“Y” Strainer
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.
INSTALLATION
Complete Near Boiler Piping Kit
Installations ...........................................
4
Near Boiler Component Kit
Installations ........................................
2-3
System Overview ....................................
1
SERVICING
Filling/Power Purging ..............................
6
Boiler Heat Exchanger
Descaling/Cleaning ................................
8
Secondary System Purging ......................
5
Strainer Servicing ...................................
7
Typical System Overview
Floor standing, side mount boiler with Complete Near Boiler Piping Kit.
MANIFOLD
BOIL
ER
BOILER LOOP
CIRCULATOR
PUMP
D
A
System Return Port /
Boiler Inlet
System Supply Port /
Boiler Outlet
Union Ball Valve
Connection
Rotating Flange
Ball Valve
Connection
UNION
BODY
UNION
BODY
FLANGED PUMP
CONNECTION
HYDRO-CORE
END
Copper
T
ubi
ng
Copper
T
ubi
ng
UNION
CONNECTION
UNION
CONNECTION
H
G
E
F
I
J
Floor standing, side
mount boiler with
Near Boiler Component Kit.
