Mueller Centurion, 107, Improved, Modern Improved Instruction Manual
insERtion instRUctions ManUaL
®
MUELLER
Improved,
Centurion
Series,
Modern
Improved,
®
Centurion Series Fire Hydrant –
Adding an Extension 2-3
Improved Fire Hydrant –
Inserting Extension Section
(All Models Prior to 1962) 4-5
Improved Fire Hydrant –
Inserting Extension Section
(Sealed Oil Reservoir 1962 Style) 6-7
Improved Fire Hydrant –
Inserting Extension Section
with Steel Stem Coupling
(Sealed Oil Reservoir 1962 Style) 8-9
Modern Improved Fire Hydrant –
Inserting Extension Section 10-11
107
Inserting Extension Section 12-13
TABLE OF CONTENTS PAGE
®
Fire Hydrant –
and 107
Inserting Extension Sections – Notes 14-15
Fire Hydrants
Reliable Connections
Inserting Extension
Sections
moreinfo@muellercompany.com
!
WARNING: Before working on, or disassembling the Hydrant (including removing any bolts(s) holding the Hydrant together), shut off gate valve to isolate
Hydrant from main water source. Loosen (do not remove) one nozzle cap two turns and check for water under pressure inside Hydrant - bleed off any pressure, then
remove nozzle cap completely. Open Hydrant main valve completely. A continuous ow of water, no matter how slight, indicates Hydrant is not properly isolated from
the main water supply, and that problem must be corrected before any Hydrant disassembly can proceed. Disassembly of Hydrant with pressurized water acting
against the main valve could result in unexpected ejection of Hydrant parts, debris or high-pressure water stream, which could cause serious bodily injury.
Customer Service Center
Decatur, Illinois
800.423.1323
www.muellercompany.com
TM
MUELLER
®
Centurion
®
Series Fire Hydrant
Adding an Extension
!
WARNING: Before removing any bolt(s) holding the Hydrant together, shut off gate valve to isolate Hydrant from
main water source. Loosen (do not remove) one nozzle cap two turns and check for water under pressure inside Hydrant
– bleed off any pressure, then remove nozzle cap completely. Open Hydrant main valve completely. A continuous ow
of water, no matter how slight, indicates Hydrant is not properly isolated from the main water supply, and that problem
must be corrected before any Hydrant disassembly can proceed. Disassembly of Hydrant with pressurized water acting
against the main valve could result in unexpected ejection of Hydrant parts, debris or high-pressure water stream,
which could cause serious bodily injury.
EQUIPMENT & TOOLS NEEDED – PPE: Hard hat, safety shoes, safety vest, safety glasses, work gloves.
Tools: Wrench, A-311 operating wrench, pliers.
1.
Remove Hold-Down Nut, Anti-Friction
Washer and Operating Nut from
Bonnet. Lubricate outside of Brass
Sleeve and slide over threaded stem
end to prevent O-ring damage. Unbolt
Bonnet from Upper Barrel and remove.
Remove Brass Sleeve.
4.
Attach Extension Barrel to Lower
Barrel with solid Flange halves
(without groove) and Bolts, being
sure O-ring is in place.
2.
Unbolt Trafc Flange. Remove Upper
Barrel. Remove Upper Stem and
Stem Coupling by removing the lower
stainless steel Cotter Pin and stainless
steel Clevis Pin.
5.
Assemble Upper Stem and Stem Coupling onto Extension Stem and retain it
with stainless steel Clevis Pin and stainless steel Cotter Pin.
NOTE: Make sure Stem Coupling is
installed with “This End Up” towards
the Upper Stem.
3.
Place Extension Stem and Extension
Coupling on Lower Stem and retain
it with stainless steel Clevis Pin and
stainless steel Cotter Pin.
2
MUELLER
®
Centurion
®
Series Fire Hydrant
Adding an Extension
!
CAUTION: Always ll the oil reservoir with the Bonnet installed, the Hydrant in its normal upright position, and
the main valve fully closed. If the Hydrant is lled with lubricant under any other circumstances, excess lubricate can
overll the Bonnet and create a pressure lock. This could result in damage to the seals or Bonnet or prevent proper
Hydrant operation.
EQUIPMENT & TOOLS NEEDED – PPE: Hard hat, safety shoes, safety vest, safety glasses, work gloves.
Tools: Wrenches, A-311 operating wrench.
6.
Attach Upper Barrel with Trafc Flange
Halves (with bevel on outer edge
downward) and Bolts; being sure Trafc
Flange O-ring* is in groove in Upper
Barrel. Tighten Bolts to 60 ft-lbs.
9.
Torque Bonnet Bolts to 40-80 ft-lbs.
Torque Hold-Down Nut to 200-300
ft-lbs. after Bonnet Bolts are tight. Open
Gate Valve. Unscrew one Hose Nozzle
Cap slightly to bleed air. Open Hydrant
fully. Tighten Hose Nozzle Cap when
water starts owing and check all ange
connections for leaks. Turn Operating
Nut to fully closed position and remove
Hose Nozzle Cap to allow Barrel to
drain. Replace Hose Nozzle Cap.
7.
Check Bonnet O-ring* for proper
position and condition. Attach Brass
Sleeve to Upper Stem and lubricate
outside to protect O-ring Seals from
thread damage. Place Bonnet onto
Upper Barrel and assemble Bonnet
Bolts only hand-tight. Remove Brass
Sleeve. Reassemble Operating Nut,
Anti-Friction Washer, and Hold-Down
Nut (snug-tighten). Be sure O-ring
Seals are in good condition at thread
shoulder on outside of Hold-Down Nut
and on inside where contact is made
with Operating Nut.
8.
Remove Oil Filler Plug in side of
Bonnet. Pour MUELLER Hydrant
Lubricant into Oil Reservoir until it is
level with Oil Filler Plug Hole. Replace
Oil Filler Plug (see Lubrication section
on page 8).
10.
Turn Operating Nut in closing direction
to make sure Main Valve is closed
tightly, then turn in opening direction
approximately 1/4 turn to relieve
tension on operating mechanism.
*To determine correct O-rings for Bonnet and Ground Line anges, which are similar in
appearance: smaller diameter O-ring is used at Bonnet ange; larger at Ground line ange.
3
®
MUELLER
Improved Fire Hydrant
Inserting Extension Section (All Models Prior to 1962)
EQUIPMENT & TOOLS NEEDED – PPE: Safety shoes, safety vest, safety glasses, work gloves.
1
Tools:
/4” hex-head wrench, A-51 lubricating oil, A-311 operating wrench, A-367 brass sleeve.
1.
Remove four Bonnet Bolts and turn
operating nut in the opening direction
until free of stem. Remove Bonnet.
4.
Screw Extension Stem into Extension
Coupling until it contacts Lower Stem.
Align tongue and groove of stems
with hole in Extension Stem Coupling.
Screw Extension Stem Coupling
upward until tongue and groove of
stems rmly lock together. Tighten with
wrench, then, screw in Set Screw in
Extension Stem Coupling.
2.
Remove four bolts in stufng box.
Lubricate A-366 Brass Sleeve. Slide
Sleeve over threaded area of stem
to protect O-rings from damage by
threads. Lift stufng box off carefully.
Remove Brass Sleeve.
5.
Place new Stem Coupling Sleeve part onto
Upper Stem. Screw new Stem Coupling
part onto Lower Stem as far as threads
permit.
Screw Upper Stem into Stem Coupling
until it contacts the Lower Stem. Turn Stem
Coupling and Upper Stem so that slot in
Thimble aligns with the tongue and groove
of stems. Hold Upper Stem in alignment
and screw Stem Coupling upward until
tongue and groove of stems rmly lock
together. Tighten with wrench. With Stem
Coupling in place, slide Sleeve downward
so that lower end of sleeve surrounds
upper end of Stem Coupling. Be sure
Sleeve projections t into Stem Coupling
slots. With Sleeve in place, tighten set
screw in Sleeve.
3.
Unbolt Trafc Flange and remove Upper
Barrel.
Unscrew set screw in Sleeve. Screw
Stem Coupling down against shoulder.
Slide Sleeve up and unscrew Upper
Stem from Stem Coupling. Unscrew
Stem Coupling from Lower Stem. Screw
Extension Stem Coupling down on
Lower Stem against shoulder.
4
®
MUELLER
Improved Fire Hydrant
Inserting Extension Section (All Models Prior to 1962)
EQUIPMENT & TOOLS NEEDED – PPE: Safety shoes, safety vest, safety glasses, work gloves.
1
Tools:
/4” hex-head wrench, A-51 lubricating oil, A-311 operating wrench, A-367 brass sleeve.
6.
Attach Extension Barrel to Lower
Barrel with solid Flange Halves
(without groove) and bolts, being sure
Flange Gasket is in place.
7.
Attach Upper Barrel to Extension Barrel
with Trafc Flange Halves (with groove)
and bolts, being sure Flange Gasket is
in place.
Turn Operating Nut in the
10.
closing direction to make sure
Main Valve is closed, then turn in the
opening direction approximately 1/4
turn to relieve tension on the operating
mechanism.
8.
Check Stufng Box Gasket. Lubricate
A-366 Brass Sleeve. Slide Sleeve
over threaded area of stem to protect
O-rings from damage by threads.
Place Stufng Box in position and bolt
to barrel. Remove Brass Sleeve. Pour
Mueller Hydrant Lubricant into Oil
Reservoir until
3
/4” from top.
9.
Replace bonnet. Turn Operating Nut in
closing direction to engage stem. If
Bonnet has Filler Plug, make sure that
the Filler Plug Hole is aligned with the
offset portion of the Oil Reservoir. Bolt
in place.
5
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