(THE BACK PRESSURE VALUES ARE VALID FOR 2.5BAR/36,2PSI INFLATION PRESSURE)
PIPE DIAMETER 20-40 mm
08''- 1,6''		 25-50 mm
1''- 2''		 35-70 mm
1,4''- 2,8''		 50-100 mm
2''- 4''		 70-150 mm
2,8''- 6''		 100-200 mm
4''- 8''		 150-300 mm
6''- 12''		 200-400 mm
8''- 16''		 200-500 mm
8''-20''		 300-600 mm
12''- 24''		 375-750 mm
15''- 30''		 500-800 mm
20''-32''		 500-1000 mm
20''- 40''		 600-1200 mm
24''- 48''		 800-1600 mm
32''64''		 1400-2800 mm
55''- 111''
20mm
0,8''		 1,9bar
23,2psi














25mm
1''		 1,8bar
26,1psi		 1,9bar
27,5psi













30mm
1,2''		 1,7bar
24,6psi		 1,8bar
26,1psi













35mm
1,4''		 1,5bar
21,7psi		 1,7bar
24,6psi		 2,0bar
29psi












40mm
1,6''		 1,4bar
20,3psi		 1,5bar
21,7psi		 1,9bar
27,5psi












50mm
2''
1,4bar
20,3psi		 1,8bar
26,1psi		 2,0bar
29psi











70mm
2,8''

1,5bar
21,7psi		 1,8bar
26,1psi		 2,0bar
29psi










100mm
4''


1,5bar
21,7psi		 1,8bar
26,1psi		 2,0bar
29psi









150mm
6''



1,5bar
21,7psi		 1,8bar
26,1psi		 2,0bar
29psi








200mm
8''




1,5bar
21,7psi		 1,8bar
26,1psi		 2,0bar
29psi		 2,1bar
30,4psi






300mm
12''





1,5bar
21,7psi		 1,8bar
26,1psi		 2bar
29psi		 2,0bar
29psi





375mm
15''






1,6bar
23,2psi		 1,8bar
26,1psi		 1,7bar
24,6psi		 2,0bar
29psi




400mm
16''






1,5bar
21,7psi		 1,8bar
26,1psi		 1,7bar
24,6psi		 2,0bar
29psi




500mm
20''







1,5bar
21,7psi		 1,5bar
21,7psi		 1,7bar
24,6psi		 2bar
29psi		 2,0bar
29psi


600mm
24''








1,3bar
18,8psi		 1,5bar
21,7psi		 1,8bar
26,1psi		 1,8bar
26,1psi		 2,0bar
29psi

700mm
28''









1,4bar
20,3psi		 1,6bar
23,2psi		 1,6bar
23,2psi		 1,8bar
26,1psi

750mm
30''









1,3bar
18,8psi		 1,5bar
21,7psi		 1,5bar
21,7psi		 1,7bar
24,6psi

800mm
32''










1,4bar
20,3psi		 1,4bar
20,3psi		 1,6bar
23,2psi		 2,0bar
29psi
900mm
36''











1,2bar
17,4psi		 1,4bar
20,3psi		 1,9bar
27,5psi
1000mm
40''











1,0bar
14,5psi		 1,2bar
17,4psi		 1,8bar
26,1psi
1100mm
43''












1,1bar
15,9psi		 1,6bar
23,2psi
1200mm
48''












1,0bar
14,5psi		 1,5bar
21,7psi
1300mm
51''













1,3bar
18,8psi
1400mm
55''













1,2bar
17,4psi		 1,6bar
23,2psi
1500mm
59''













1,1bar
15,9psi		 1,5bar
21,7psi
1600mm
63''













1,0bar
14,5psi		 1,4bar
20,3psi
1700mm
67''














1,3bar
18,8psi
1800mm
71''














1,2bar
17,4psi
2100mm
83''














1bar
14,5psi
2800mm
111''














0,6bar
8,7psi