Technical
datasheet
Messing
|
Code
|
d1
|
Opening pressure
in mbar ±20% |
d2
|
d3
|
e ≈
|
l1
|
l2
|
l3
|
A/F
|
|
|---|---|---|---|---|---|---|---|---|---|---|
|
|
|
|
|
|
|
|
|
|
|
|
|
GN 881-M12x1,5-200-MS-M
|
M 12 x 1.5
|
200
|
18
|
20
|
23.5
|
8.5
|
11.5
|
24.5
|
22
|
39
|
|
GN 881-M14x1,5-200-MS-M
|
M 14 x 1.5
|
200
|
20
|
20
|
23.5
|
8.5
|
11.5
|
24.5
|
22
|
44
|
|
GN 881-M16x1,5-200-MS-M
|
M 16 x 1.5
|
200
|
22
|
20
|
23.5
|
8.5
|
11.5
|
24.5
|
22
|
49
|
|
GN 881-M18x1,5-200-MS-M
|
M 18 x 1.5
|
200
|
24
|
20
|
23.5
|
8.5
|
11.5
|
24.5
|
22
|
52
|
|
GN 881-M20x1,5-200-MS-M
|
M 20 x 1.5
|
200
|
26
|
20
|
29
|
8.5
|
11.5
|
24.5
|
27
|
74
|
|
GN 881-M22x1,5-200-MS-M
|
M 22 x 1.5
|
200
|
27
|
22
|
29
|
8.5
|
11.5
|
24.5
|
27
|
79
|
|
GN 881-M24x1,5-200-MS-M
|
M 24 x 1.5
|
200
|
29
|
20
|
32.5
|
8
|
12
|
25
|
30
|
96
|
|
GN 881-M26x1,5-200-MS-M
|
M 26 x 1.5
|
200
|
32
|
20
|
34
|
8
|
12
|
25
|
32
|
112
|
|
GN 881-M30x1,5-200-MS-M
|
M 30 x 1.5
|
200
|
36
|
20
|
39
|
8
|
12
|
25
|
36
|
148
|
|
GN 881-G1/4-200-MS-M
|
G 1/4
|
200
|
20
|
20
|
23.5
|
8.5
|
11.5
|
24.5
|
22
|
42
|
|
GN 881-G3/8-200-MS-M
|
G 3/8
|
200
|
23
|
20
|
23.5
|
8.5
|
11.5
|
24.5
|
22
|
51
|
|
GN 881-G1/2-200-MS-M
|
G 1/2
|
200
|
26
|
20
|
29
|
8.5
|
11.5
|
24.5
|
27
|
76
|
|
GN 881-G3/4-200-MS-M
|
G 3/4
|
200
|
32
|
20
|
34
|
8
|
12
|
25
|
32
|
113
|
|
GN 881-G1-200-MS-M
|
G 1
|
200
|
39
|
20
|
44
|
8
|
12
|
25
|
41
|
186
|
Valve body
Brass MS
Breather cap
Stainless steel AISI 304 M
Gasket
Brass
with silicone-rubber coating (VMQ)
Spring
Stainless steel AISI 301
Seal DIN 7603 A
Soft iron 1.0338
Temperature resistant from -30 °C to +200 °C
Once the opening pressure given in the table is exceeded, breather valves GN 881 with gasket will vent into a container and so protect against excessive inside container pressure. A green colour ring marks the opening pressure of 200 mbar.
In its normal state, the gasket closes the container and so prevents dirt or dust getting inside the container.
The above diagram shows the air outlet as a factor of the opening pressure.
The installation position is vertical to the top.
The valves are checked for leak tightness and opening pressure.
Assembly instruction:
For mounting on walls of less than 4 mm thickness please use mounting nuts GN 7430
