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High pressure products

Weld-on tube union hydrogen applications DN3

Weld-on tube union with weld-on ends Pressure range: PN700, Nominal diameter: DN3, Material: 1.4404, Pipe connection size: d1=6, s=1,5, d12=6

Successfully tested by TÜV SÜD in accordance with EC 79/2009 and EU 406/2010 (report 20454990-1-d)

H2-M7A3

Advantages & functions

  • With weld-on end on both sides
  • Available for different tube diameters
  • Available in DIN EN material 1.4404
  • Temperature-resistant from -40 °C up to +85 °C
  • Available for pressures up to 700 bar 
  • Three-part union consisting of weld-on stub, clamping nut and weld-on screw stub 

 

M7A Series for pressures up to PN 700: 

DN

d1

s

d3

d12

L1

l1

n2

s1

s3

Order number

3

6

1,5

M 14x1,5

6

65

38

18

17

19

H2-M7A3

 

For orders on induvidual parts we need following information: 

Pieces

Component

Designation

Order number

Material number

1

1

Weld-on stub

(Series)-(DN)- 1

___________________

1

2

Clamping nut 

(Series)-(DN)- 2

___________________

1

3

Screw-in stub 

(Series)-(DN)- 3

___________________


Technical data

Nominal pressure (in bar) 700 PN
Nominal width (in mm) 3 DN
d1Outer diameter of welding nozzle 6 mm
sWandstärke 1.5 mm
d3 M 14x1.5 
d12Screw-in threaded connector 6 mm
L1 65 mm
l1 38 mm
n2 18 mm
s1 17 Wrench size
s3 19 Wrench size
Material according to DIN EN 1.4404 
Material description Steel 

Technical drawing