Zephyr

 

 

 

 

 

 

 

 

dimensions in inches

 designation A B  C  D 

E

§

 F G

L†

 

G

H‡

 

H

L†

 

H

H‡

 

J

L†

 

J

H‡

 K  L  M  N

 

4988-1000

 

1

¼  

 8 

11⁄32

   9

½  

 10

5⁄8

   8

1⁄16

 24

3⁄16

 25

13⁄16

   7

½  

   8

7⁄8

   9

13⁄16

   9

7⁄8

   6

½  

   5

5⁄8

   5  2

¼  

 

4988-2500

 2  12 

13⁄32

 13

13⁄16

 15

3⁄16

 12

1⁄8

 32

3⁄8

 36

5⁄16

   8

13⁄16

 12

1⁄8

 11

9⁄16

 12

3⁄8

   8

5⁄8

 10

3⁄16

   6

½  

 

4

1⁄8

 

4988-4000

 3  16 

13⁄32

 18

1⁄8

 19

¾  

 16

1⁄8

 42

¼  

 42

¼  

 12

1⁄8

 12

1⁄8

 12

13⁄16

 14

9⁄16

 10

7⁄8

 11

¼  

 10  4

¼  

  

4988-6000

 3  16 

13⁄32

 18

1⁄8

 19

¾  

 16

1⁄8

 42

¼  

 49

7⁄8

 12

1⁄8

 17

1⁄8

 13

9⁄16

 16

1⁄8

 10

7⁄8

 11

¼  

 10  4

¼  

 

4988-9000

 4  12 

5⁄8

 25

½  

 27

3⁄8

 22

¼  

 54

¾  

   —  17

1⁄8

   —  16

1⁄8

   — 17

1⁄8

 15

½  

 10

5⁄16

 

 

  

 

 

 

 

       4988- -R

 Zephyr

 

 

 

 

 

 

For -L Only

 

Obs.   

weight, lb 

SW style connection

 designation P  R  S

L†

 

S

H‡

 

Port 

4988-L 4988-H  4988-R 

pipe size (inches)

 

4988-1000

 10

¾  

 

   

¾  

 

5

13⁄16

 

5

9⁄16

 

1⁄8

   7

 

3

¼  

 

3

¾  

 

15

1⁄16

 

8790-0 

45 

  52 

24 

  4 A round

 

4988-2500

 15

13⁄16

  1

1⁄8

 

6

1⁄16

 

7

5⁄16

 

3⁄16

 

9

¼  

 

3

7⁄8

 

4

¾  

 

20

7⁄8

 

8790-0 

88 

117 

57 

  6 SW connection,

 

4988-4000

 18

1⁄8

 

1

¼  

 

8

9⁄16

 

7

9⁄16

 

3⁄16

 11

¼  

 

5

9⁄16

  6

5⁄8

 24

13⁄16

  8790-0 

137 

181 

96 

  8 suitable for 

 

4988-6000

 18

1⁄8

 

1

¼  

 

8

9⁄16

 

9

¼  

 

3⁄16

 11

¼  

 

5

9⁄16

  6

5⁄8

 24

13⁄16

 8790-0 

142 

221 

96 

10 

fl exible sleeve or

 

4988-9000

 22

11⁄16

   —  9

¼  

   — 

3⁄8

 13

7⁄8

  6

9⁄16

 9  33

½  

 

8790-4-A 

300 

  — 

180 

12 welded connection

§  Allow at least 6" on each side to withdraw fl ame supervisory device or spark igniter.
† 4988- -L only.

½  

" NPT for Flame Rod or UV 

cell, interchangeable with Ob-

servation Port opening

5 spark

igniter cable

½  

" Obs. Port

adj. port

cock

Low Fire Gas

½  

" NPT

T

F

E

§

M

N

L

P

G

pressure

tap

¼  

" NPT Air

pressure taps

¼  

" NPT Air

S

J

4988- -R Burner Size

1000 = 4" (4.50" O.D.)
2500 = 6" (6.63" O.D.)
4000 = 8" (8.63" O.D.)
6000 = 10" (10.75" O.D.)
9000 = 12" (12.75" O.D.)

H

K

pressure tap

¼  

" NPT Gas

4988-1000
thru -6000

R

"

B

" number of holes, "

C

" dia.

on "

D

" bolt circle

S

J

H

4988-

9000-L

only

¾  

" fpt for

UV inside

burner

housing

5 spark

igniter

cable

pressure tap

¼  

" NPT Air

pressure tap

1

/

4

" NPT Gas

Main Gas

"

A

" fpt fl anged

U

Low Fire Gas

 

½  

" NPT

2" Obs.

Port

K

U

Main Gas

"

A

" NPT

Z

3.0"

Y

X

Bulletin 4988

Page 4

+

DIMENSION, inches

Catalog Combustion 2021 - Page 0548

Fives Group
FIVES GROUP
FIVES GROUP-FIVES GROUP-0548-0552

Request Quote

Please provide additional information
Company: *
Name: *
Email: *
Telephone:
Product:
Message:


Privacy Policy and Terms of Service apply.

Fives Group Part Numbers on this Catalog Page
Line Part Number Manufacturer Request Quote
1 4988-1000 Fives Group Request Quote
2 4988-4000 Fives Group Request Quote
3 4988-6000 Fives Group Request Quote
4 4988-2500 Fives Group Request Quote
5 4988-9000 Fives Group Request Quote