200 LEVEL EXHAUST SILENCERS

flange “F” Mounting Flange:
Standard in sizes 4” to 22”. Drilling matches 125/150# ASA standard.
pipe-threads “P” Male Pipe Threads:
NPT ends offered in sizes 3/4″ through 4”.

Companion flanges available for 4” to 22”.

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Application:
These silencers are recommended where minimum silencing is required and ambient noise levels are medium to high.

Construction:
Aluminized Steel: Nelson Silencers through 26” O.D. are fabricated of aluminized steel as standard materials. This material has a maximum operating temperature of 1250°F.

Mild Steel/Aluminized Steel: Nelson Silencers 30” O.D. and larger are fabricated of mild steel and aluminized steel. All silencers 30” O.D. through 36” O.D. have aluminized steel bodies with all other components fabricated from mild steel. Silencers 42” O.D. and larger are fabricated from mild steel.

Silicone Aluminum Paint: Nelson Silencers through 26” O.D. are given a coat of high heat resistant silicone aluminum paint.

Primer/Silicone Aluminum Paint: Nelson Silencers over 30″ O.D. and larger are given a coat of high heat, rust inhibiting primer and then a top coat of high heat resistant silicone aluminum paint. Physical properties are maintained up to 900°F* on aluminized steel and 1100°F* on mild steel.

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Note: When figuring pressure drop for side inlet add 3″ H2O to back pressure shown on above curve.  *Estimated

Description

Part Number

A
Nominal Inlet Diameter

B
Body Dia. O.D.

C
Body Length

D
Overall Length

E
Offset To C/L

F
Offset To C/L

G
Inlet Length

41220*

2.0

8.1

31.7

35.6

1.25

1.25

1.9

41225*

2.5

9.0

38.8

42.8

1.50

1.50

2.0

41230*

3.0

10.1

38.2

44.0

2.75

2.75

2.9

41235*

3.5

10.1

44.2

50.0

2.06

2.06

2.9

41240*

4.0

10.1

49.2

55.0

2.31

2.31

2.9

41250*

5.0

14.1

43.5

51.4

3.61

3.61

4.0

41260*

6.0

14.1

57.5

65.4

3.60

3.60

4.0

41280

8.0

22.2

56.6

64.0

0

0

3.7

41282

10.0

22.2

84.7

92.0

0

0

3.7

41284

12.0

26.2

79.7

87.0

0

0

3.7

41286

14.0

36.2

94.6

101.0

0

0

3.2

41288

16.0

42.2

108.2

115.0

0

0

3.4

41299

18.0

42.3

108.2

114.9

0

0

3.3

41221

20.0

48.3

134.1

140.1

0

0

3.0

41222

22.0

54.3

135.5

143.2

0

0

3.9

Data on larger sizes available on request.

 

Part Number

A

Nominal Inlet Diameter

B

Body Dia. O.D.

C

Body Length

D

Overall Length

E

Offset To C/L

F

Offset To C/L

G

Inlet Length

H

Outlet Length

43220

2.0

8.1

31.7

32.8

3.4

0

2.0

1.9

43225

2.5

9.0

38.8

40.8

4.4

1.5

2.5

2.0

43230

3.0

10.1

38.2

41.1

4.1

1.8

3.0

2.9

43235

3.5

10.1

44.2

47.1

4.6

2.1

3.0

2.9

43240

4.0

10.1

49.2

51

5.1

0

3.0

2.9

43250

5.0

14.1

43.5

45.7

5.8

2.6

4.0

3.9

43260

6.0

14.1

57.6

61.5

6.8

3.1

4.0

3.9

43280

8.0

22.2

56.6

60.3

11.3

0

4.0

3.7

43282

10.0

22.2

84.7

88.3

11.3

0

4.0

3.6

43284

12.0

26.2

79.8

83.4

12.9

0

4.0

3.6

43286

14.0

36.2

94.7

97.9

15.3

0

4.0

3.2

43288

16.0

42.1

108.2

111.6

16.1

0

4.0

3.4

43299

18.0

42.2

108.2

111.5

19.1

0

4.0

3.3

43221

20.0

48.3

134.1

137.1

19.8

0

4.0

3.0

43222

22.0

54.3

135.6

139.4

21.8

0

4.0

3.8

Part Number

A
Nominal Inlet Diameter

B
Body Diameter O.D.

C
Body Length

D
Overall Length

E
Offset To C/L

F
Offset To C/L

G
Inlet Length

H
Outlet Length

44640

4.0

10.1

49.2

52.1

24.6

0

3.0

2.9

44650

5.0

14.1

43.6

47.5

21.8

2.6

4.0

3.9

44660

6.0

14.1

57.6

61.5

28.8

3.1

4.0

3.9

44680

8.0

22.1

54.6

58.3

26.3

0

4.0

3.7

44682

10.0

22.1

84.6

88.2

42.3

0

4.0

3.6

44684

12.0

26.1

79.5

83.4

39.9

0

4.0

3.6

44686

14.0

36.2

88.7

91.9

44.3

0

4.0

3.2

Data on larger sizes available on request.

 

*Inlet and outlet offset from centerline of silencer as shown in dimension E and F.

Drains are standard on all silencers with a 9” body diameter or larger.

Note: Specifications are subject to change without notice.
Note: All dimensions are in inches.

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