Download sheet in pdf format
They are made of rubber, flanged, made up of an elastic BI-ONDA rubber body, reinforced with a braid of nylon threads which make them resistant to stresses due to pressure during use and to the movements they must absorb. The sealing step between the joint flange and the counterflange is in turn reinforced with a steel ring, which avoids (within the limits of use permitted by the joint) the removal of the rubber body from the flange seat, as well as give greater guarantees of non-deformability during use, a situation that could lead to leaks in the joint itself.
STRUCTURE :
Swivel flanges: galvanized carbon steel
Reinforcement step: galvanized carbon steel
Elastomer: special synthetic rubber
Reinforcement: Nylon synthetic fibre
Available rubber compounds: EPDM, NITRILE, NEOPRENE, HYPALON, VITON
Maximum operating pressure: from DN25 to DN300 16 bar - from DN350 to DN700 8 bar
Burst pressure: from DN25 to DN300 60 bar - from DN350 to DN700 24 bar
Depression: 650mm/Hg
Operating temperature: -20 ÷ 100°C

Diameter
nominal
Length OR
Hole
OR
lip
Eligible movements
Axial Lateral Angular
inch. mm mm mm mm compression elongation +/- +/-
1"1/2 40 175 40 68 50 30 45 35°
2" 50 175 52 86 50 30 45 35°
2"1/2 65 175 68 105 50 30 45 35°
3" 80 175 76 115 50 30 45 35°
4" 100 225 103 150 50 35 40 35°
5" 125 225 128 179 50 35 40 35°
6" 150 225 152 210 50 35 40 35°
8" 200 325 194 260 60 35 35 30°
10" 250 325 250 320 60 35 35 30°
12" 300 325 300 367 60 35 35 30°
14" 350 350 320 408 40 30 30 20th
16" 400 350 372 472 40 30 30 20th
18" 450 350 415 522 40 30 30 20th
20" 500 350 454 570 40 30 30 20th
24" 600 350 580 689 40 30 30 20th