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Specifications

The specifications section on this page provide the ratings and other specifications for the Max-Flo Series.

1.  The pressure/temperature limits in this Instruction Manual and any applicable standard or code limitation should not be exceeded.

Available Configurations

Type HC-15:

 Steam pressures to 15 psig / 1.03 barg

Type HC-30:

 Steam pressures to 30 psig / 2.07 barg

Type HC-75:

 Steam pressures to 75 psig / 5.17 barg

Type HC-125:

 Steam pressures to 125 psig / 8.62 barg

Type HC-175:

 Steam pressures to 175 psig / 12.1 barg

Maximum Operating Pressure

(1)

175 psig / 12.1 barg

Maximum Allowable Pressure

(1)

175 psig / 12.1 barg

Maximum Operating Temperature

(1)

Saturated at pressure

Maximum Allowable Temperature

(1)

377°F / 192°C

Materials of Construction

Body and Cover:

  Cast iron

Valve, Pin and Seat:

 Hardened Stainless steel

Float:

 Stainless steel

Lever Assembly:

 Stainless steel

Thermostatic Air Vent:

 Stainless steel cage and 

Thermal element

Cover Bolts:

 Grade 5

Baffle:

 Stainless steel (NPS 2-1/2 / DN 65 

units only)

Maintenance

 

 WARNING

To avoid personal injury, property 

damage or equipment damage caused 

by sudden release of pressure or 

explosion of accumulated gas, do 

not attempt any maintenance or 

disassembly without first isolating the 

equipment from system pressure and 

relieving all internal pressure from 

the equipment.

When checked regularly and properly maintained, 

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 nameplate, must be equal or 

greater than the maximum pressure differential across 

the trap. Install the trap straight and in a level position 

to ensure proper installation.

1.  Determine where to install trap, based on the 

following requirements:
a.  The trap must be located as closed as possible, 

and below the equipment to be drained.

b.  The trap must be in a straight run of horizontal 

pipe as shown in Figure 2, and pitched to allow 

condensate to flow into trap inlet, and away 

from trap outlet.

c.  Allow for enough space around the trap for 

servicing which may include removal of the 

body or cover, depending on the model you 

are installing.

2.  Install a Y-strainer with a Blowdown valve in a 

pipe, ahead of steam trap. This prevents dirt from 

entering trap.

3.  Install union fittings and a shutoff valve in inlet 

pipe and outlet pipe. This allows trap to be isolated 

when servicing. 

4.  Install a test valve in outlet pipe, and cap it. This 

allows trap to be tested. Cap is used as safety 

precaution when unit is not being tested.

5.  Blowdown piping using full steam pressure for 

five minutes. This cleaning process will remove 

debris from pipe and oil from system.

2

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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