QUICKDRAW→ Steam Heater

CAUTION: When cleaning a tube bundle, tubes should not be hammered on with any metallic tool and, in case it is necessary to use scrapers, care should be exercised that the scraper is not sharp enough to cut the metal of the tubes.

4.When replacing the heat exchanger head, use a torque wrench to tighten the bolts/studs and nuts. Use the following chart as a guide. All torque values apply to well-lubricated nut bearing surfaces.

TIGHTENING TORQUES

COMPRESSED FIBER GASKETS

Bolt

Recommended

 

 

Torque

Torque

Max.

Dia.

ft-lbs

Increment

Torque

1/2"

40

5

60

5/8"

80

5

120

 

 

 

 

SPIRAL WOUND GASKETS

 

Bolt/Stud

Recommended

 

 

Torque

Torque

Max.

Dia.

ft-lbs

Increment

Torque

1/2"

40

5

60

5/8"

80

5

120

3/4"

120

5

200

7/8"

200

10

320

1"

300

10

490

1 1/8"

450

10

710

1 1/4"

600

10

1000

10