Pump Rental Booklet - Catalog - Page 144
Flange Sizes
Normal
Bore
1”
1¼”
1½”
2”
2”
50mm
2½”
2½”
3”
80mm
80mm
4”
4”
100mm
100mm
5”
5”
125mm
6”
6”
150mm
150mm
7”
7”
8”
8”
200mm
200mm
9”
9”
10”
10”
250mm
250mm
12”
12”
300mm
300mm
Table
Diameter Flange
P.C.D.
Bolt Dia
D&E
D&E
D&E
D
E
NP16
D
E
D&E
NP10
NP16
D
E
NP10
NP16
D
E
NP16
D
E
NP10
NP16
D
E
D
E
NP10
NP16
D
E
D
E
NP10
NP16
D
E
NP10
NP16
4.50”
4.75”
5.25”
6.00”
6.00”
165mm
6.50”
6.50”
7.25”
200 (7.87)
200 (7.87)
8.50”
8.50”
220 (8.66)
220 (8.66)
10.00”
10.00”
250mm
11.00”
11.00”
285 (11.22)
285 (11.22)
12.00”
12.00”
13.25”
13.25”
340 (12.38)
340 (12.38)
14.50”
14.50”
16.00”
16.00”
400 (15.75)
400 (15.75)
18.00”
18.00”
455 (17.91)
455 (17.91)
3.25”
3.44”
3.88”
4.50”
4.50”
125mm
5.00”
5.00”
5.75”
160 (6.30)
160 (6.30)
7.00”
7.00”
180 (7.09)
180 (7.09)
8.25”
8.25”
210mm
9.25”
9.25”
240 (9.49)
240 (9.49)
10.25”
10.25”
11.50”
11.50”
295 (11.61)
295 (11.61)
12.75”
12.75”
14.00”
14.00”
350 (13.78)
355 (13.98)
16.00”
1.00”
400 (15.75)
410 (16.14)
.50”
.50”
.50”
.625”
.625”
M16
.625”
.625”
.625”
M16
M16
.625”
.625”
M16
M16
.625”
.625”
M16
.625”
.750”
M20
M20
.625”
.750”
.675”
.750”
M20
M20
.625”
.750”
.750”
.750”
M20
M25
.750”
.875”
M20
M25
Number
of Bolts
4
4
4
4
4
4
4
4
4
8
8
4
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
12
8
12
8
12
12
12
12
12
12
12
Flange Thickness
Grey Cast Iron
.50”
.625”
.625”
.688”
.750”
20mm
.688”
.750”
.750”
21 (.83)
21 (.83)
.750”
.875”
22 (.87)
22 (.87)
.813”
.875”
22 (.87)
.813”
.875”
23 (.91)
23 (.91)
.875”
1.00”
.875”
1.00”
245 (.96)
245 (.96)
.875”
1.00”
1.00”
1.00”
26 (1.02)
26 (1.02)
1.00”
1.125”
27.5 (1.08)
27.5 (1.08)
NP10 and NP16 are for cold water pressures of 10 bar and 16 bar and are the current
British Standard. They are unnecessarily heavy for most contractors’ pumps.