Deltafluid, a specialist in custom-made flanges and special connections
We custom-manufacture all types of flanges and special connections: just let us know if you need specific materials or custom dimensions, we can meet your requirements.
Flanges are piping components that allow easy assembly and disassembly, unlike welded assemblies.
We offer our flanges in combination with our flow measurement devices or restriction orifices, or with any mechanical component such as spectacle blinds, flow straighteners, and more.
Various types of flanges are available to meet all standards and requirements across all industries.
MAIN FEATURES FLANGES
- Standards: ASME B16.5, B16.36, B16.47, MSS SP-44, API6B.
Corresponding flanges: welding neck, orifice welding neck, slip on, socket welding, blind.
Operating pressure: ASME 150 # to 2500 # or API 200 PSI to 20,000 PSI. - Standards: NF EN 1092-1, NF EN 1759-1.
Corresponding flanges: flat welding flange (type 01), solid flange (type 05), butt flange with butt weld (type 11), ...
Operating pressure: ISO PN 2.5 to 420. - All types of faces: RF, RTJ, with interlocking, other faces of seal according to your application.
- Diameter: DN1 / 4 '' to 24 '' - up to 60 '' on request.
- Material: standard: carbon steel, stainless steel, duplex, others according to your application
- Thickness to be specified.
- Schedule: 5 to XXS.
Special case orifice flanges:
These are used for flow measurement via an orifice plate. Thanks to their built-in pressure taps, they allow the high and low pressures (Δp) to be connected directly to the flange.
MAIN FEATURES CLAMP CONNECTIONS
Clamp fittings consist of two welded hubs fitted around a special metal gasket. Two clamps, secured with special bolts and nuts, are then tightened around the assembly to ensure a perfect seal under extreme operating conditions in terms of pressure (high pressure up to class 4500) as well as vibration, temperature and so on.
Here are a few examples of flanges we have manufactured – in all sizes and for all applications:
Left : orifice flanges with pressure taps (nipples + valves)
In the center: one-piece orifice holder (monoblock)
Right: one-piece orifie holder (monoblock)
Examples of clamp connections (also known as hub or Grayloc connections):
Hub connection, assembly for a multi-stage restriction orifice
If you do not find the answer you are looking for, please contact us either by phone at +33(0)5 59 30 85 20 or via the contact form. We will respond as soon as possible.
The choice of flanges depends on the pressure (class of flange) and the connection provided on the pipe.
It should be noted that the welding neck flange is the only one that has a circular weld while the other flanges only have corner welds. It is therefore recommended for more demanding applications (for 2500 # for example).
In addition, ASME B16.36 standardizes the orifice flange, which only starts at 900 #.
