Watlow Heater Catalog

WATROD 1- 19

Tubular Heaters

WATROD Single/Double-Ended Heaters Bend Formations (Continued)

WATROD 1- 20

Figure 20

Figure 19

A

A

L

L

R 1 WATROD 1- 21

B

C

X Hairpins

C

K

R 2

R 1

H

Ref.

H

B

M

R 2

R 4

R 3

R 1

Ref.

R 3

R 1 (6 places) Dia.

E

R 2

C

R 5

K

WATROD 1- 22

X = number of outside hairpins SL = 2K + 2A + 2B + 2C + 2L (X - 1) + 1.14R 1 (X) + 1.14R 2 (X - 1) - 0.86R 3 - 0.86R 4 - 0.86R 5 - 7.29 Dia. - (2X - 1) 0.43 Dia.

SL = 2K + 2C + B + 2A + 2L - 2.58R 1 - 0.86R 2 - 0.86R 3 - 12.15 Dia.

X = Number of Outside Hairpins SL = 2K + 2A + 2B + 2C + 2L(X - 1) +1.14 R 1 (X) + 1.14 R 2 (X - 1) - 0.86 R 3 - 0.86 R 4 - 0.86 R 5 - 7.29 DIA - (2X - 1) 0.43 DIA H WATR D 1- 23

Figure 22

Figure 21

Ref.

M

C WATROD 1- 24 C Dia.

L

K

R 2

R 1

H

L

Dia.

A

R 1

R 1

R 1

Dia.

R 2

A

B

A

K SL = 2A - 0.86R 1 - 1.43 Dia. + H

SL = 2A + 2K - H - 2.28R 1 - 0.86R 2 - 3.29 Dia.

R 3

H SL = 2A-0.86R-1.43 DIA + H

Figure 24

SL = 2A + 2K-H-2.28 R 1 -0.86 R 2 -3.29 DIA

Figure 23

SL = 2K + 2C + B + 2A + 2L-2.58 R 1 - 0.86 R 2 -0.86R 3 -12.15 DIA

Dia.

Dia.

R 1

H

R 1

H

R 1

K

R 3

L

K

R 2

R 2

A

A

SL = 2K - 0.86R 2 - 3.86 Dia. + 2A - 0.86R 1 + H

SL = 2K + 2L + 2A + H-0.86 R 1 - 0.86 R 2 -0.86 R 3 -7.29 DIA SL = 2K + 2L + H - 0.86R 1 - 0.86R 2 - 0.86R 3 - 7.29 Dia.

SL = 2K - 0.86 R 2 - 3.86 DIA + 2A - 0.86 R 1 + H

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