Bulletin 4055

Page 6

4055-L EXTENDED LENGTH IGNITERS

The 4055-L series igniters are extended length igniters with the 
same variable length adapters as the 4055-M.

They feature:

  Wide range of available fi xed lengths from 12 to 48 inches

  Overlapping ceramic electrode insulators

  A small enough diameter to fi t through a 

¾  

" pipe fi tting

  Threaded adapters that allow adjusting the insertion length.

5

1⁄8

"

Nominal Length

Set Screws

(Steel)

Ø .84 Extension Tube (304 SST)

 

Igniter Tip (309 SST)

With Ground Wire (Kanthal A-1)

Threaded Adapter (Steel)

O-Ring #212 (Silicone)

Positioning Collar (Steel)

Electrode (Kanthal A-1 rod) 

with Insulators (Ceramic)

3⁄32

" Gap

Note: All 4-57719-# electrodes are built with modifi ed versions of igniters labeled with "R240-2755" or "I-2". Do not replace the electrode in a 4055-L 
with an unmodifi ed "R240-2755" or "I-2" electrode. It will not function correctly.

 

Igniter Model 

Nominal Length 

Adapter 

Weight

 Number 

Inches 

Thread 

NPT  lbs

 4055-L12-0 

12 

¾  

" 1.8

 4055-L18-0 

18 

¾  

" 2.5

 4055-L24-0 

24 

¾  

" 3

 4055-L32-0 

32 

¾  

" 3.8

 4055-L36-0 

36 

¾  

" 4.2

 4055-L42-0 

42 

¾  

" 4.9

 4055-L-48-0 

48 

¾  

" 5.4

 

Model Number 

Electrode Assembly

 4055-L12-# 

4-57719-12

 4055-L18-# 

4-57719-18

 4055-L24-# 

4-57719-24

 4055-L32-# 

4-57719-32

 4055-L36-# 

4-57719-36

 4055-L42-# 

4-57719-42

 4055-L-48-# 

4-57719-48

 

Common Parts 

Part Number

 Igniter 

Tip 

4-57718-1

 

¾  

" Threaded Adapter Assembly 

4-45311-1

  1" Threaded Adapter Assembly 

4-45311-2

 

Igniter Model 

Nominal Length 

Adapter 

Weight

 Number 

Inches 

Thread 

NPT  lbs

 4055-L12-1 

12 

1" 

2.0

 4055-L18-1 

18 

1" 

2.7

 4055-L24-1 

24 

1" 

3.2

 4055-L32-1 

32 

1" 

4.0

 4055-L36-1 

36 

1" 

4.4

 4055-L42-1 

42 

1" 

5.1

 4055-L-48-1 

48 

1" 

5.6

SPARE PARTS

WHEN SETSCREWS ARE LOOSENED, ASSEMBLY CAN BE WITH-
DRAWN FOR CLEANING, THEN REINSERTED TO OPTIMUM DEPTH.

Special engineered versions of the igniters can be also made 
with:

  Custom lengths

  The "ERA style" ignition cable connector

  Special adapters or igniter tips

Adapter assemblies include: positioning collar, mounting 
adapter, o-ring, and setscrews.

Extened Length | 4055 Igniters

Catalog Combustion 2021 - Page 0100

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Fives Group Part Numbers on this Catalog Page
Line Part Number Manufacturer Request Quote
1 categories Fives Group Request Quote
2 4-45311-1 Fives Group Request Quote
3 4-57719-42 Fives Group Request Quote
4 4-57719-12 Fives Group Request Quote
5 4055-12-0 Fives Group Request Quote
6 4055-24-1 Fives Group Request Quote
7 4055-32-1 Fives Group Request Quote
8 4055-18-0 Fives Group Request Quote
9 4055-42-1 Fives Group Request Quote
10 4-45311-2 Fives Group Request Quote
11 4-57719-32 Fives Group Request Quote
12 4055-36-0 Fives Group Request Quote
13 240-2755 Fives Group Request Quote
14 4055-18-1 Fives Group Request Quote
15 4055-32-0 Fives Group Request Quote
16 4055-36-1 Fives Group Request Quote
17 4055-42-0 Fives Group Request Quote
18 4-57719-48 Fives Group Request Quote
19 4055-24-0 Fives Group Request Quote
20 4-57719-24 Fives Group Request Quote
21 4-57719-18 Fives Group Request Quote
22 4-57718-1 Fives Group Request Quote
23 4-57719-36 Fives Group Request Quote
24 4055-12-1 Fives Group Request Quote