Untitled - Future Pipe Industries

Table 1a
If connected to raised faced flanges, used 50 % of above torque values
*see important Note on maximum torque
b. Neoprene flat gasket
Sized type : full face t = 0.125”, Shore A hardness 60 + 5
Application : DN 1” through 14”, PN through ANSI 150 # rating.
Torques if assembled against flat faced flanges
*see important Note on maximum torque
Max* Torque
lb-ft (N.m)
Table 1b
c. Neoprene flat gasket with steel inlay
Sized type : full face t = 1/4” to 3/8”
Application : DN 1” through 48”, up to 250 psi rating.
Torques if assembled against flat faced flanges
Table 1c
f. Assembly of large diameter flanges with rubber ‘O’ ring seals
Max* Torque
lb-ft (N.m)
Max* Torque
lb-ft (N.m)
ID (inch) DIN 2501 PN 10 ASA 150# ASA 300#
1” 52 (70) 52 (70) 74(100)
1 1/2” 74 (100) 74 (100) 110 (150)
2” 74 (100) 74 (100) 110 (150)
3” 74 (100) 74 (100) 110 (150)
4” 74 (100) 74 (100) 185 (250)
6” 110 (150) 110 (150) 185 (250)
8” 110 150) 110 (150) 220 (300)
10” 110 (150) 220 (300) 370 (500)
12” 110 (150) 220 (300) 405 (550)
ID (inch)
Max* Torque lb-ft (N.m)
ASA 150 #
1-3” 40 (55)
4-6” 40 (55)
12” 74 (100)
14” 92 (125)
ID (inch)
Max* Torque lb-ft (N.m)
225 psi max
1-12” 40 ( 55)
14-24’” 74 (100)
28-32” 222 (300)
36-42” 295 (400)
Large diameter flanges (generally 36”and larger) are supplied with a groove in the flange face for sealing using a neoprene
‘O’ ring supplied by FPI. The following assembly instructions are applicable.
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