NW Glass Flanges

Introducing our in-house tooled NW Glass Flanges series. These flanges are available in sizes ranging from 10mm ID to 160mm and come with mating knuckle clamps and teflon centered oring. These are essentially the glass equivalent to stainless steel KF flanges, and can be used to interface with the metal KF series.  We stock 10/16, 25, 40, 50 and 69 mm ID glass flanges and their corresponding clamp assemblies and teflon seal sets. They are designed for vacuum use, with a leak rate of  <1x 10-9 mtorr / sec.

NW 50 flanges

These flat flanges have proven to be useful in the fabrication of electrochemical cells and microbial fuel cells; basically any cells requiring sealing a membrane, such as Naftion®, between sides. See a sketch of how they connect, and hold membranes.

NW Flanges and Componenets

NW Flange w S/S

NW flange detail

Search the gallery for NW Flanges and see lots more examples of these flanges in context

Flange dimensions below;
The OD is accurate, the rest approximate.

 They are useful for mounting windows as well. We also offer borosilicate plates to close off the flange and provide a clear window, as well as quartz plates to allow for UV transmission, most often for photoelectrochemical uses. The diameter of the plate is the same as the outside diameter of the associated flange.

Quartz windows

 

  Flange OD   Tube OD   Inside Diam  
  inches mm inches mm inches mm
NW10 1.18 30 0.63 16 0.47 12
NW16 1.18 30 0.79 20 0.63 16
NW25 1.58 40 1.18 30 1.02 26
NW40 2.17 55 1.81 46 1.65 42
NW50 2.95 75 2.21 56 2.05 52
NW63 3.43 87 2.91 74 2.76 70

 

It is possible to overtighten the clamps. Please see a PDF of our notes about their use.

 

Below, these flanges provide flexibility and versatility in an elaborated vacuum manifold.

Diphosphine Synthesis Line Detail

Shown below is the largest version of this flange, an NW160. It has an ID of 150mm, just under 6", for easy access to the interior.
NW160 glass flanges and clamp

Below is a large 2-part cyclone assembly utilizing NW flanges, both for access to the interior of the cyclone itself, through NW160 flanges, as well as for porting through the NW50 flanges.

big 2 part cyclonelarge cyclone

 

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