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Recommended schedule:

•  Initially, every 2 to 3 days after startup until system 

is clean.

•  Due to normal wear that may occur, recommended 

to inspect the parts periodically and replace 

if necessary. 

Note

The frequency of inspection depends on 

the severity of service conditions or the 

requirements of state and federal laws. 

1.  Inspect the joints for any leaks. Ensure to follow 

the "Removal from Service"  and "Repair" 

procedure before addressing any joint leaks.

2.  Clean strainers by opening blow down valve 

and allowing full steam pressure to flow out for a 

couple of minutes. Then, close valve.

Removal from Service

1.  Close inlet and outlet supply valves and allow unit 

to cool. If a test valve is installed, open this valve 

to relieve any pressure.

Figure 2

. Max-Flo Series Steam Trap Typical Installation

TRAP NPS 2-1/2 / DN 65

TRAP NPS 2 / DN 50

SUPPLY

INLET 

VALVE

EYE HOOK

"Y" STRAINER

INLET

COVER BOLTS

TRAP

DIRT 

POCKET

DISCHARGE LINE

PIPE 

SUPPORTS

OUTLET

DRAIN PLUG

SUPPLY

INLET 

VALVE

"Y" STRAINER

INLET

COVER BOLTS

TRAP

DIRT 

POCKET

DISCHARGE LINE

PIPE 

SUPPORTS

OUTLET

DRAIN PLUG

SUPPORT 

FOOT

THERMOSTATIC 

VENT PIPE 

TO GRAVITY 

RETURN LINE

2.  Remove drain plug to drain condensate from 

trap body.

3.  Remove bolts that attach cover to body and 

remove trap body. 

Repair

1.  With body assembly removed from trap cover, 

remove pin that holds lever assembly to yoke. 

Inspect seat and pin for wear, replace if worn.

2.  Inspect thermostatic element by placing it in 

boiling water to see if it closes. If it doesn’t close, 

replace it.

3.  Check alignment of pin and seat, adjust or replace 

parts as necessary. See Table 1.

4.  Check float ball for damage shake float to 

make sure there is no fluid inside float. Replace 

if necessary.

5.  Clean gasket surfaces and install new 

cover gasket.

3

Max-Flo Series

Summary of Contents for Spence Max-Flo Series

Page 1: ...ostatic air vent As condensate enters the trap the float and lever mechanism is raised lifting the valve off the seat discharging the condensate Condensate will continue to be discharged at the same rate at which it is entering Any air or non condensible gas that may accumulate will be continually and efficiently passed by the thermostatic air vent Figure 1 Max Flo Series Steam Trap Installation W...

Page 2: ...ed the Max Flo Series Float and Thermostatic Traps will provide optimum performance specifications or where conditions exceed any ratings of the adjacent piping or piping connections To avoid such injury or damage provide pressure relieving or pressure limiting device Max Flo Series should be installed in an accessible position and location for easy servicing The trap seat rating stamped on the na...

Page 3: ...Installation TRAP NPS 2 1 2 DN 65 TRAP NPS 2 DN 50 SUPPLY INLET VALVE EYE HOOK Y STRAINER INLET COVER BOLTS TRAP DIRT POCKET DISCHARGE LINE PIPE SUPPORTS OUTLET DRAIN PLUG SUPPLY INLET VALVE Y STRAINER INLET COVER BOLTS TRAP DIRT POCKET DISCHARGE LINE PIPE SUPPORTS OUTLET DRAIN PLUG SUPPORT FOOT THERMOSTATIC VENT PIPE TO GRAVITY RETURN LINE 2 Remove drain plug to drain condensate from trap body 3 ...

Page 4: ...body assembly on cover 2 Insert and securely tighten drain plug 3 Open supply valve on trap outlet side slowly open the supply valve to the trap inlet 4 Check for leaks and normal operation Parts Ordering When corresponding with your local Sales Office about Max Flo Series always reference the assembly number see Table 1 PART MODEL P N Thermostat All Models WAL5891200 Lever and Valve Kit Includes ...

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