8.69 [Fig 321 PN16 Grooved Flange] [FM, UL, VdS] Red.jpg 8.69 [Fig 321 PN16 Grooved Flange] [FM, UL, VdS] Galvanised.jpg

321 PN16 Grooved Flange

  • FM Approved Logo Mid Grey 300.jpg
  • UL Logo Mid Grey.jpg
  • VdS Logo mid grey 2.jpg
Size range DN40 to DN250 (1½" to 10")
Maximum working pressure 15.5 bar (225 psi)
Material Ductile Iron
Finish Red painted or Galvanised
Approvals FM Approved, UL Listed, VdS

Rapidrop Grooved couplings and fittings are used in assembly of grooved piping systems. They are available in painted and galvanised finishes and are FM, UL and VdS approved.  The Rapidrop type 321 PN16 grooved flanges are pressure rated to 225psi and are used where a connection to flanged pipe is required. They can be used in standard and thin walled pipes.

Sizes & Dimensions

Nominal Size
mm/in
Pipe
O.D
mm/in
Working
Pressure
PSI/MPa
Dimensions Bolt Size
A
mm/in
B
mm/in
C
mm/in
D
mm/in
E
mm/in
No Size
mm
40
48.3
1.900
225
1.6
195
7.68
18.5
0.73
150
5.90
110
4.33
45.4
1.78
2 - M10X50
50
2
60.3
2.375
225
1.6
220
8.66
18.5
0.73
165
6.50
125
4.92
57.5
2.26
2 - M10X50
65
76.1
76.1
3.000
225
1.6
235
9.25
18.5
0.73
185
7.28
145
5.71
72.7
2.86
2 - M10X50
80
3
88.9
3.500
225
1.6
255
10.04
18.5
0.73
195
7.68
160
6.30
85.5
3.37
2 - M10X50
100
4
114.3
4.500
225
1.6
279
10.98
18.5
0.73
224
8.82
180
7.09
110.5
4.35
2 - M10X50
125
5
139.7
5.500
225
1.6
320
12.60
23
0.91
250
9.84
210
8.27
135.5
5.33
2 - M12X65 
150
6
168.3
6.625
225
1.6
346
13.62
24
0.94
280
11.00
240
9.95
164.3
6.47
2 - M12X65
200
8
219.1
8.625
225
1.6
414.3
16.31
30
1.18
340
13.39
295
11.61
214.9
8.46
2 - 3/8 x 70
2 - M10X70
250
10
273.0
10.750
225
1.6
480
18.90
25.5
1.00
405
15.94
355
13.98
268.9
10.59
2 - 3/8 x 70
2 - M10X70



Specified Bolt Torque

Bolt Size Specified Bolt Torque
Inch Lbs-Ft. N.m
M10 30-45 40-60
M12 80-100 110-135
M16 - -
M20 - -
M22 - -
M24 - -