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Pipe Insulation Schedule
 
 
Piping System

 

 

Operating Temp. o F
Pipe Size

1" & Below

Pipe Size

1-1/2" to 2"

Pipe Size

2-1/2" to 4"

Pipe Size  Above 4"
Material
Vapor Barrier
High Pressure Steam 306 to 400
2-1/2"
2-1/2"
3"
4"
M.F.
No
Medium Pressure Steam 251 to 305
2"
2-1/2"
3"
3"
M.F.
No
Low Pressure Steam 200 to 250
1-1/2"
1-1/2"
2"
2"
M.F.
No
Steam Condensate 190 to 220
1"
1-1/2"
2"
2"
M.F.
No
Heating Water 120 to 200
1"
1"
1-1/2"
1-1/2"
M.F.
No
Chilled Water Up to 58
1"
1"
1"
1"
M.F.
Yes
Process Cooling Water Up to 65
1"
1"
1"
1"
M.F.
Yes
Process Cooling Water 66 to 110
N.R.
N.R.
N.R.
N.R.
None
Yes
Condensate Drains 35 to 70
1"
1"
1"
1"
M.F.
Yes
Domestic Cold & Non Potable Water   55 to 65
1"
1"
1"
1"
M.F.
Yes
Domestic

Hot & Recir. Water

100 150
1"
1"
1-1/2"
1-1/2"
M.F.
No
Roof & Overflow Drains 32 to 65
1"
1"
1"
1"
M.F.
Yes
Engine Exhaust 100+
1"
1"
1"
1"
C.S.
No
Refrigerant Suction 25 to 55
3/4"
3/4"
3/4"
 
F.E.
Yes

 

 

 

 
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