We are leading manufacturer & supplier of PTFE Expansion Bellows in India

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Expansion Bellows are an indispensable part of a piping system. These can withstand design temperature, pressures both negative as well as positive, misalignment, vibrations and provide the necessary capacity to absorb thermal growth of the piping system. The movement can be axial, lateral or angular where our expansion bellows stand apart. The pressure thrust of expansion joint too is restrained by use of tie bolts and reinforcing rings. Convolution design is perfect for strength and flexibility and our bellows are available in convolutions of different numbers depending upon the total movement capacity of expansion bellows.

Nominal Size (mm) ØB (mm) X (mm) C (mm) ØD (mm) ØE (mm) ØF (mm) L (mm) T (mm) t (mm) N x ØH (mm) n x Øh (mm)
15 21 31 60.3 111 88.9 35 50 10 2 4 x 14 3 x 10
25 33 50 79.4 129 108.0 51 50 10 2 4 x 14 3 x 10
40 48 69 98.4 148 127.0 73 55 10 2 4 x 14 3 x 10
50 58 84 120.6 180 152.4 92 70 12 3 4 x 18 3 x 12
65 73 103 139.7 205 177.8 105 80 12 3 4 x 18 3 x 12
80 90 116 152.4 218 190.5 127 100 12 4 4 x 18 3 x 12
100 110 154 190.5 256 228.6 157 100 14 4 8 x 19 3 x 12
150 160 197 241.3 313 279.4 216 100 16 4 8 x 22 3 x 14
200 210 240 298.4 376 342.9 270 150 16 4 8 x 22 3 x 14
250 262 310 361.9 445 406.4 324 150 20 5 12 x 25 3 x 14
300 310 380 431.8 521 482.6 381 150 20 5 12 x 25 3 x 14
450 462 524 577.8 680 635.0 533 150 25 5 16 x 32 3 x 19
500 512 581 635.0 743 698.5 584 150 25 5 20 x 32 3 x 25
600 612 695 749.3 858 812.8 692 150 25 5 20 x 32 3 x 25

MATERIAL

  • Flanges : C.S Galv.
  • Bellows (Moulded) : 100 % PTFE – ASTM D 4895
  • Drilling : ASME B 16.5
  • Fastners : M.S Galv. BS 1083/BS 916
  • Note : Number of Convolutes depends on length of expansion bellows
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