Dilatoflex® NT
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  • Dilatoflex® series NT
  •  
  • Reliable compensation of expansion by the following features:
  • - high narrow convolution, hence large capacity to take expansion.
  • - high narrow convolution, hence low springrate.
  • - full rubber flanges, hence secure sealing to pipe flanges.
  • - cylindrical rigid part between convolution and flange, hence low stresses in flange.
  • - cylindrical rigid part between convolution and flange, hence low stresses in convolution.
  • - low stresses in rubber, hence long lifetime.
  •  
  • Other characteristics:
  • - three types:
  •      NT    DN   20 - DN   32series nt
  •      NT-1 DN   40 - DN 450 with 1 convolutionseries nt-1
  •      NT-2 DN 250 - DN 450 with 2 convolutionsseries nt-2
  • - rubber qualities, many choices, see table below.
  • - quality rubber, hence long lifetime.
  • - 16 barg pressure allowed at maximum temperature at maximum capacity to take expansion.
  • - hot dip galvanized steel retaining rings drilled PN10, other materials and drillings on request.
  • - certified, amongst others CE-PED 97/23/CE Cat. III
 
Rubber qualities Dilatoflex® series NT
Rubber quality Color code Application Max. temperature
(°C) @ 16 barg
AR/CN Red corrosive and abrasive products (weak acids and bases) 90
CC Green HVAC water, cooling water and cooled water, even with glycol 90 (110°C up to 10 barg)
EPC Crème potable water and food products 95
GZ Orange demi-water, seawater, surface water, waste water, compressed air,
oil, natural gas, bio gas, petroleum products (max. 40% aromatic)
90
YP Yellow special chemicals, strong acids and bases 100
TE Purple acids and basis, weak chlorinated products 100
ES White superheated water and steam 140
AB Grey acids and basis, weak chlorinated products 100
 
Design parameters and dimensions Dilatoflex® series NT
series
 
Nominal bore
(DN)
Fabrication length
(mm)
Axial movement
(mm)
Lateral movement
(- and +) (mm)
Angular movement
(- and +) (°)
Max. working pressure
(barg)
NT 20 150 -12 / +8 3 5 12
NT 25 150 -15 / +8 3 5 12
NT 32 150 -15 / +8 3 5 12
NT-1 40 150 -30 / +20 15 20 16
NT-1 50 150 -30 / +30 15 20 16
NT-1 65 150 -30 / +30 15 20 16
NT-1 80 150 -30 / +30 15 20 16
NT-1 100 150 -30 / +30 15 20 16
NT-1 125 150 -30 / +30 15 10 16
NT-1 150 150 -30 / +30 15 10 16
NT-1 200 150 -30 / +30 15 10 16
NT-1 225 150 -30 / +30 15 10 16
NT-1 250 200 -25 / +30 30 9 16
NT-1 300 200 -25 / +30 30 8 16
NT-1 350 200 -25 / +30 30 7 16
NT-1 400 200 -25 / +30 30 6 16
NT-1 450 200 -25 / +30 30 5 16
NT-2 250 300 -60 / +60 45 25 16
NT-2 300 300 -60 / +60 45 22 16
NT-2 350 300 -60 / +60 45 18 16
NT-2 400 300 -60 / +60 45 16 16
NT-2 450 300 -60 / +60 45 14 16

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