Replacement Cartridge and
Strainer Kit
For Series:
47, 51, 101-A
247, 551S,
847, 851,
INSTRUCTION MANUAL
MM-309F
Water Feeders with Hex Port Valves
CAUTION
WARNING
• Before using this product read and understand instructions.
Cartridge
Strainer Assembly
WARNING
• Save these instructions for future reference.
• All work must be performed by qualified personnel trained in the proper application, installation, and maintenance of plumbing, steam, and electrical equipment and/or systems in
accordance with all applicable codes and ordinances.
Failure to follow this warning could cause property damage, personal injury or death.
a. Turn off the power to the boiler.
STEP 1 - Preparation
INSTALLATION –
TOOLS NEEDED:
One (1) 13/16" (21mm) socket wrench and one (1)
1/2" (13mm) wrench.
b. Allow the boiler to cool to 80˚F (27˚C) and
close the two (2) gate valves (A) in the
system piping.
a. Using the 1/2" (13mm) wrench, unscrew
and remove the four (4) hex-head
screws (B) that secure the strainer.
Discard the strainer (H) and the
gasket (C).
b. Using a 13/16" (21mm) socket wrench,
unscrew the old cartridge (D) from the
valve body (E) and discard it.
NOTE: The cartridge (D) will either be
black (Series 101-A, 47, 247 and 847)
or gray (Series 51, 851 and 551-S) and
should be replaced with a similarly
colored replacement cartridge.
STEP 2 - Remove the Original Cartridge and Strainer