Cashco 3100 User Manual
Page 3
3
IOM-3100
Fiberglass fl anges 2 inch to 12 inch require the use
of a full-face 150 lb. gasket. For full face gaskets,
we recommend the use of a 1/8-inch Gortex gasket.
Center the gasket within the bolt circle of the tank
fl ange and carefully set the vent on the fl ange nozzle
and align the bolt holes.
All stud threads must be lubricated to obtain proper
torque results. A washer should be used under each
stud nut.
Install the studs, washers and nuts and tighten nuts
hand tight. Check proper alignment of fl ange faces.
Misalignment of fl ange faces will cause bending
stresses at the fl ange and fl ange joint and damage
may result. Correct any misalignment prior to
applying torque to nuts.
All nuts must be tightened in proper sequence and
equal increments. Proceed through the tightening
sequence until the recommended torque is attained.
Recheck the torque on each bolt in the same
sequence as bolts previously tightened may have
relaxed through the torque sequence.
WARNING
Minimum clearance between tank roof and vacuum
inlet port must be at least equal to the vents’ nomi-
nal fl ange bore. Tank nozzle bore must be greater
than or equal to vent inlet fl ange bore. Inlet and
outlet piping loads must be supported by appropri-
ate structural supports, NOT by the vent body.
MOUNTING
FLANGE
BOLT TORQUE - Ft. lbs.
NUMBER
BOLTS
TOTAL
STUD SPECIFICATIONS
RAISED FACE
FLAT FACE
THREAD UNC
STUD LENGTH *
QUANTITY *
2”
30 (0.35)
60 (0.69)
4
5/8” - 11
2.50”
2
3”
54 (0.62)
108 (1.24)
4
5/8” - 11
2.75”
2
4”
42 (0.48)
78 (0.89)
8
5/8” - 11
2.75”
4
6”
90 (1.04)
150 (1.72)
8
3/4” - 10
3.00”
4
8”
126 (1.45)
228 (2.62)
8
3/4” - 10
3.00”
4
10”
138 (1.59)
246 (2.83)
12
7/8” - 9
3.50”
6
12”
186 (2.14)
348 (4.01)
12
7/8” - 9
3.50”
6
*
Blind tapped holes only (Models 3100, 3200, and 3300). Use standard ASME stud length for other holes.
TABLE 1
All Torque Requirements Are Dependant On Gasket Material
Bolt Torque and Stud Specifi cations - ASME #150 Flange Connections
MOUNTING
FLANGE
BOLT
TORQUE -
Ft. lbs.
NUMBER
BOLTS TO-
TAL
STUD SPECIFICATIONS
FLAT FACE
THREAD UNC
STUD LENGTH *
QUANTITY *
2”
20
4
5/8” - 11
2.50”
2
3”
20
4
5/8” - 11
2.75”
2
4”
20
8
5/8” - 11
2.75”
4
6”
30
8
3/4” - 10
3.00”
4
8”
30
8
3/4” - 10
3.00”
4
10”
30
12
7/8” - 9
3.50”
6
12”
30
12
7/8” - 9
3.50”
6
Bolt Torque and Stud Specifi cations for FRP Flanges Drilled to ASME #150 Flange Connections