When used to connect misaligned pipes, the nipple should be approximately bent to the required shape before installation to avoid 
stress on burners or piping when unions or fl anges are tightened. All movement, bend limitations, and minimum bend radii listed in the 
Performance Section should be respected. 8777 fl exible nipples are not intended to be compressed or stretched during installation. If the 
nipple dœ s not fi t, adjust piping. Only wrench on the proper nipple area. Do not create sharp bends. Bend the corrugated section as 
close to the center as possible. Do not apply torsion.

 

STANDARD ORDERING EXAMPLES

(Refer to Dimensions for pipe size designation)

8777-0

  

3/4” fl exible nipple

8777-4-H

 

2” high temperature fl exible nipple

8777-6-E*

 

3” epoxy coated fl exible nipple

8777-1-C

 1” 

fl exible nipple cleaned for oxygen service

*

The epoxy coating process limits epoxy coating to 1-1/2” pipe size and larger

Contact North American for special fl exible nipple options. Special options include:  

Flanged Ends: 

ANSI class 150 drilling fl at faced fabricated fl anges. 

Custom Over All Lengths (O.A.L.): When ordering state 

“O.A.L.” in 

inches (in 1.0” increments). 

Note: Special options may not be available in all sizes. Other end connection types, materials, and custom options may be available.

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Page 4

WARNING: 

Situations dangerous to personnel and property may exist with the operation and maintenance of any combustion equipment. The presence of fuels, oxidants, hot and cold combustion products, hot 

surfaces, electrical power in control and ignition circuits, etc., are inherent with any combustion application. Components in combustion systems may exceed 160°F (71°C) surface temperatures and present hot 
surface contact hazard. Fives North American Combustion, Inc. suggests the use of combustion systems that are in compliance with all Safety Codes, Standards, Regulations and Directives; and care in operation.

Installation | Flexible Pipe Nipples

Fives North American Combustion, Inc. 

4455 East 71st Street - Cleveland, OH 44105 - USA

www.fi vesgroup.com

CONTACT

fna.sales@fi vesgroup.com
T +1 800 626 3477 - F +1 216 373 4237

Catalog Combustion 2021 - Page 1721

Fives Group
FIVES GROUP
FIVES GROUP-FIVES GROUP-1721-1705

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Fives Group Part Numbers on this Catalog Page
Line Part Number Manufacturer Request Quote
1 8777-6-e Fives Group Request Quote
2 8777-4-h Fives Group Request Quote