Valve 

dimensions in inches 

wt,

designation A 

C D  E  F  G H J 

L  lb

   1857-01

 

1

½  

 

1⁄8

 

25⁄8 

 415⁄32  211⁄32 

 81⁄8

 

3¾   

— 

— 

— 

— 

  4¼  

     

1857-0

 

1

¾  

 

1⁄8

 

25⁄8 

 415⁄32  211⁄32 

 81⁄8

 

3¾   

— 

— 

— 

— 

  4¼  

  

 1857-1 

 

1 1⁄8 27⁄8

 

 47⁄8

 

25⁄16  

9

9

/

16 

4¼   

— 

— 

— 

— 

  5½  

 

   

1857-3

  

1½  

 

1⁄8 35⁄8  

59⁄16 31⁄8

 

  9

9

/

16  

5

 

— — — —   

9¾  

  

 1857-4

 

2 1⁄8

    

4

3

/

8

 

 75⁄8

 

329⁄32

 

10½  

   

    

— 

— 

— 

— 

17

 
   

1857-5-F

 

2½  

 

1⁄8

 

7  

729⁄32

 

43⁄16 10½  

 

7½   

11⁄16 

¾   

5½   

34

   

1857-6-F 

 

3 1⁄8

 

7½   

  91⁄32

 

429⁄32

 

1727⁄32

 

8

 

¾   

¾        4 

47

  

 1857-7-F 

 

1⁄8 

113⁄8 

61⁄32 

30 

9  

15⁄16    ¾  

 

8

 

7½   

80

  

North American Supervising Gas Valves
FM Approved

Dimensions 

&

 Instructions 1857-1

C

F

D

E

G

B

 - checking line

pipe size

(location varies

with size)

A

 - Gas

pipe size

1857-01, -0, -1, -3, -4

1857-5-F, -6-F, -7-F

B

 - checking line

pipe size

(location varies

with size)

A

 - Gas

pipe size

H

G

F

D

E

8647-01 Filter

Weight: 1 lb

8657-03 Bleed Orifi ce (#76 Drill)

Weight: 1 oz

2¾  

 dia.

¼  

 pipe thread outlet

5¾  

½  

 pipe tap inlet

7⁄8

1

¼  

 pipe tap

J

 - dia. of 

drilled holes

K

 - no. of 

drilled holes

L

DIMENSIONS SHOWN ARE SUBJECT TO CHANGE. PLEASE OBTAIN CERTIFIED PRINTS FROM FIVES NORTH AMERICAN COMBUSTION, INC.

IF SPACE LIMITATIONS OR OTHER CONSIDERATIONS MAKE EXACT DIMENSION(S) CRITICAL.

ENERG

Y | C

OMBUSITION

Catalog Combustion 2021 - Page 1536

Fives Group
FIVES GROUP
FIVES GROUP-FIVES GROUP-1536-1522

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Fives Group Part Numbers on this Catalog Page
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1 1857-7-f Fives Group Request Quote
2 1857-6-f Fives Group Request Quote
3 1857-5-f Fives Group Request Quote