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134
FIG. 7312
HDPE Flange Adapter
1. When mating to a wafer valve (lug valve), if the valve is rubber faced in
the area designated by the sealing surface dimensions (A Max. to B Min.),
place the Gruvlok Flange Adapter Insert between the valve and the
Gruvlok Flange.
2. When mating to a rubber-faced metal fange, the Gruvlok Flange
Adapter Insert is placed between the Gruvlok Flange and the rubber-
faced fange.
3. When mating to a serrated fange surface, a standard fullfaced fange
gasket is installed against the serrated fange face, and the Gruvlok
Flange Adapter Insert is placed between the Gruvlok Flange and the
standard fange gasket.
4. When mating to valves or other component equipment where the
fange face has an insert, use procedure described in note 3.
APPLICATIONS WHICH REQUIRE A GRUVLOK
®
FLANGE ADAPTER INSERT:
A. The sealing surfaces A Max. to B Min. of the mating fange must be free
from gouges, undulations and deformities of any type to ensure proper
sealing of gasket.
B. Gruvlok Flanges are to be assembled on butterfy valves so as not to inter-
fere with actuator or handle operation.
C. Do not use Gruvlok Flanges within 90 degrees of one another on standard
fttings because the outside dimensions may cause interference.
D. Gruvlok Flanges should not be used as anchor points for tierods across
nonrestrained joints.
E. Fig. 7312 Gruvlok Flange sealing gaskets require a hard fat surface for
adequate sealing. The use of a Gruvlok Flange Adapter Insert is required
for applications against rubber faced valves or other equipment. The
Gruvlok Flange Adapter Insert is installed between the Gruvlok Flange
sealing gasket and the mating fange or surface to provide a good seal-
ing surface area.
F. Gruvlok Flanges are not recommended for use against formed rubber
fanges.
1. Per ASTM F 714
See Installation & Assembly directions on page 167.
2. Per ASTM D 2447 and D 3035
FIGURE 7312 HDPE FLANGE ADAPTER
Nominal
Size
O.D.
Flange Dimensions
Sealing Surface
Latch Bolt
Mating Flange Bolts
Approx.
Wt. Ea.
X
Y
Z
A Max.
B Min.
Qty.
Size
Qty.
Size
In./DN(mm)
In./mm
In./mm
In./mm
In./mm
In./mm
In./mm
In./mm
In./mm
Lbs./Kg
4
4.500
9
10
3
/
8
3
1
/
8
4
1
/
2
5
3
/
4
2
5
/
8
x 1
5
/
8
8
5
/
8
x 3
15
100
114.3
229
264
79
114
146
6.8
6
6.625
11
1
/
4
12
3
/
8
3
7
/
8
6
5
/
8
7
3
/
4
2
5
/
8
x 1
5
/
8
8
3
/
4
x 3
1
/
2
22
150
168.3
286
314
98
168
197
10.0
8
8.625
13
1
/
2
14
7
/
8
3
1
/
2
8
5
/
8
10
1
/
4
2
3
/
4
x 2
8
3
/
4
x 3
1
/
2
26
200
219.1
343
378
89
219
260
12.7
HDPE PIPE DIMENSIONAL SPECIFICATIONS
Nominal
Size
O.D.
Actual
Tolerance
+/-
Out of Roundness
Tolerance
+/-
Pipe Wall Thickness
SDR 7.3
SDR 9
SDR 11
SDR 15.5
SDR 17
SDR 21
SDR 32.5
In./DN(mm)
In./mm
In./mm
In./mm
In./mm
In./mm
In./mm
In./mm
In./mm
In./mm
In./mm
4
4.500
0.020
0.040
0.616
0.500
0.409
0.290
0.265
0.214
0.138
100
114.3
0.51
1.02
15.6
12.7
10.4
7.4
6.7
5.4
3.5
6
6.625
0.030
0.050
0.908
0.736
0.602
0.427
0.327
0.265
0.204
150
168.3
0.76
1.27
23.1
18.7
15.3
10.8
8.3
6.7
5.2
8
8.625
0.039
0.075
1.182
0.958
0.784
0.556
0.507
0.340
0.265
200
219.1
0.99
1.91
30.0
24.3
19.9
14.1
12.9
8.6
6.7
Y
Z
X
Gruvlok Fig.
7312 Flange
Gruvlok Fig.
7312 Flange
Serrated Face
Mating Flange
Flange
Gasket
Mating Flange
Component
Grooved Pipe
Grooved Pipe
Rubber Surface
Gruvlok Flange Adapter Insert
Gruvlok Flange Adapter Insert
B min.
A max.
NOTE A
NOTES 1 and 2
NOTES 3 and 4
GL-2.10