GN 881 Breather Valves Brass


Product description


Once the opening pressure given in the table is exceeded, GN 881 breather valves with gasket will vent a container, preventing excessive internal container pressure.
A green color ring marks the opening pressure of 200 mbar.

In its normal state, the gasket seals the container and prevents dirt and dust from getting inside of it. The above diagram shows the air passage as a factor of the opening pressure.

The breather valves are checked for leak tightness and opening pressure.

Assembly instruction:
For mounting on walls of less than 4 mm thickness please use GN 7430 thin hexagon nuts.


Valve body

Breather cap
Stainless steelM AISI 304

Brass, with silicone rubber coating (VMQ)

Thrust spring
Stainless steel AISI 301

Seal DIN 7603 A
Soft iron 1.0338

Temperature resistant from:
-22 °F up to +212 °F (-30 °C up to +100 °C)

RoHS compliant


Thin hexagon nuts GN 7430

On request

Other material
With other opening pressure 50 mbar (yellow ring)
With dipstick

Technical drawing

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GN 881 Brass Breather Valves sketch

Part Options / Table

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Dimensions in: Inch | Metric
Opening pressure
in mbar ±20%
d2d3e ≈l1l2l3A/F
M 12 x 1.5-2000.710.790.930.330.450.960.87
M 14 x 1.5G 1/42000.790.790.930.330.450.960.87
M 16 x 1.5-2000.870.790.930.330.450.960.87
-G 3/82000.910.790.930.330.450.960.87
M 18 x 1.5-2000.940.790.930.330.450.960.87
M 20 x 1.5-2001.020.791.140.330.450.961.06
M 22 x 1.5-2001.060.791.140.330.450.961.06
-G 1/22001.020.791.140.330.450.961.06
M 24 x 1.5-2001.140.791.280.310.470.981.18
M 26 x 1.5G 3/42001.260.791.340.310.470.981.26
M 30 x 1.5-2001.420.791.540.310.470.981.42
-G 12001.540.791.730.310.470.981.61

Build & Price

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Opening pressure
Valve body material

Breather cap material

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Total US Dollars (net)
In stock: 6
In Stock
Please note our quantity discounts (US Dollars).
≥ 250$15.97
Prop 65: Not compliant
Cancer and Reproductive Harm -
RoHS: Compliant
This article is RoHS-compliant in application of Annex III., which means it complies with EU Directive 2011/65/EU, including extension (2015/863/EU), for restricting the use of certain hazardous substances in electrical and electronic devices. The Directive regulates the use of hazardous substances in devices and components. The implementation in national law is summarily described with RoHS(Restriction of (the use of certain) hazardous substances)).
Weight: 0.085 lbs
If weight is not listed, please contact our Sales Department for additional information regarding weight.
Phone: 800-877-8351
All Prices are in US Dollars. Taxes Not Included.

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