Aluminum
Breather Strainers
With Stainless Steel Mesh

GN 7403

 


 

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Specification
Information

Body: Aluminum
Strainer: Stainless steel mesh, European Standard No. 1.4301 (American Standard Series 304)
Strainer bezel: Glass fiber reinforced plastic (Polyamide PA)
Seal: NBR synthetic rubber (Perbunan)
Mounting nuts: GN 543.1

Shipping

GN 7403 breather strainers are used in enclosure and device construction. Mounted into the wall of the enclosure, they ensure pressure equilibrium between the inside of the enclosure and the outside.
The outside diameter of the enclosure with the recessed hexagon matches the bolt mounting holes for DIN 3852 threaded pipe connectors.
Any dirt and dust particles carried by the medium (usually gas) are prevented from exiting, depending on the mesh size. This protects the insides of sensitive devices and machinery parts from dirt and pollution and also protects the environment from any exiting dust.
Sealing ring is embedded in a radial and plane-sided recess which makes the seal captive, and prevents it from being squeezed out during tightening.
Bezel: maximum heat resistance: 100°C (212°F).
Available upon request: Brass body, other mesh size, other strainer material.

Assembly instruction:
For mounting on walls of less than 4 mm thickness, please use mounting nut GN 543.1.

See our Technical Section for pipe thread size details.
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Metric Thread Table

Dimensions in:

millimeters
(inches)

Part Number d1
Thread
d2 d3 l1 l2 s Mesh size in µm
7403-AL-M20X1.5-100
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M20 x 1.5 26
(1.02)
10
(.39)
8.5
(.33)
7.5
(.29)

23
(.91)

100
7403-AL-M20X1.5-500
Download the CAD
500
7403-AL-M26X1.5-100
Download the CAD
M26 x 1.5 32
(1.26)
14
(.55)
9
(.35)
8
(.31)
30
(1.18)
100
7403-AL-M26X1.5-500
Download the CAD
500
7403-AL-M33X1.5-100
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M33 x 1.5 40
(1.57)
20
(.79)
11
(.43)
8.5
(.32)
36
(1.42)
100
7403-AL-M33X1.5-500
Download the CAD
500
BSPP Parallel Thread Table

Dimensions in:

millimeters
(inches)

Part Number d1
Thread
d2 d3 l1 l2 s Mesh size in µm
7403-AL-G1/2-100
Download the CAD
G 1/2 26
(1.02)
10
(.39)
8.5
(.33)
7.5
(.29)

23
(.91)

100
7403-AL-G1/2-500
Download the CAD
500
7403-AL-G3/4-100
Download the CAD
G 3/4 32
(1.26)
14
(.55)
9
(.35)
8
(.31)
30
(1.18)
100
7403-AL-G3/4-500
Download the CAD
500
7403-AL-G1-100
Download the CAD
G 1 40
(1.57)
20
(.79)
11
(.43)
8.5
(.32)
36
(1.42)
100
7403-AL-G1-500
Download the CAD
500