GN 881

Breather valves

SKU: 9562 Category:
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Technical Drawing

Product Details

Standard Elements Main dimensions Opening pressure
in mbar ±20%
Weight
Description d1 d2 d3 e ≈ l1 l2 l3 A/F g
GN 881-M12x1.5-200-MS-M M12x1.5 18 20 23.5 8.5 11.5 24.5 22 200 39
GN 881-M14x1.5-200-MS-M M14x1.5 20 20 20 8.5 11.5 24.5 22 200 44
GN 881-M16x1.5-200-MS-M M16x1.5 22 20 20 8.5 11.5 24.5 22 200 49
GN 881-M18x1.5-200-MS-M M18x1.5 24 20 23.5 8.5 11.5 24.5 22 200 52
GN 881-M20x1.5-200-MS-M M20x1.5 26 20 29 8.5 11.5 24.5 27 200 74
GN 881-M22x1.5-200-MS-M M22x1.5 27 20 29 8.5 11.5 24.5 27 200 79
GN 881-M24x1.5-200-MS-M M24x1.5 29 20 32.5 8 12 25 30 200 96
GN 881-M26x1.5-200-MS-M M26x1.5 32 20 34 8 12 25 32 200 112
GN 881-M30x1.5-200-MS-M M30x1.5 36 20 39 8 12 25 36 200 148
GN 881-G1/4-200-MS-M G1/4 20 20 23.5 8.5 11.5 24.5 22 200 42
GN 881-G3/8-200-MS-M G3/8 23 20 23.5 8.5 11.5 24.5 22 200 51
GN 881-G1/2-200-MS-M G1/2 26 20 29 8.5 11.5 24.5 27 200 76
GN 881-G3/4-200-MS-M G3/4 32 20 34 8 12 25 32 200 113
GN 881-G1-200-MS-M G1 39 20 44 8 12 25 41 200 186

Additional information

Accessories on request

– other materials.<BR>- with other opening pressure (20 mbar, yellow ring).<BR>- with dipstick.

Breather cap

Type <STRONG>M: </STRONG>AISI 304 Stainless Steel.

Features and applications

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. <BR><BR>In its normal state, the gasket closes the container and so prevents dirt or dust getting inside the container. <BR><BR>The above diagram shows the air outlet as a factor of the opening pressure. <BR><BR>The valves are checked for leak tightness and opening pressure. <BR>

Gasket

Brass, with silicone-rubber coating (VMQ).

Material

Brass <STRONG>MS</STRONG>.

Sealing DIN 7603 A

Soft iron 1.0338.

Spring

AISI 301 stainless steel.

Temperature resistance

From -30°C to +100°C.

Additional Technical Drawing