Breather Valves GN 881

Standard Sheet GN 881 Print This Page Stainless Steel Characteristics

Product description

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

In its normal state, the gasket seals the container and prevents contamination of the interior from outside (e.g. dust).

The diagram above shows the air outlet as a function of the opening pressure. The recommended installation position is vertically upwards.

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

Assembly note:
For wall thicknesses below 4 mm, use thin hex nuts GN 7430.

Specification

Body
BrassMS

Breather cap
Stainless steelM AISI 304

Gasket
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 to +392 °F (-30 °C to +200 °C)

RoHS

On request

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

Part Number	d₁ Fine thread	Pipe thread	Opening pressure in mbar ±20%	d₂	d₃	e ≈	l₁	l₂	l₃	A/F

881-M12X1.5-200-MS-M	M 12 x 1.5	-	200	0.71	0.79	0.93	0.33	0.45	0.96	0.87
881-G1/4-200-MS-M	-	G 1/4	200	0.79	0.79	0.93	0.33	0.45	0.96	0.87
881-M14X1.5-200-MS-M	M 14 x 1.5	-	200	0.79	0.79	0.93	0.33	0.45	0.96	0.87
881-M16X1.5-200-MS-M	M 16 x 1.5	-	200	0.87	0.79	0.93	0.33	0.45	0.96	0.87
881-G3/8-200-MS-M	-	G 3/8	200	0.91	0.79	0.93	0.33	0.45	0.96	0.87
881-M18X1.5-200-MS-M	M 18 x 1.5	-	200	0.94	0.79	0.93	0.33	0.45	0.96	0.87
881-M20X1.5-200-MS-M	M 20 x 1.5	-	200	1.02	0.79	1.14	0.33	0.45	0.96	1.06
881-M22X1.5-200-MS-M	M 22 x 1.5	-	200	1.06	0.79	1.14	0.33	0.45	0.96	1.06
881-G1/2-200-MS-M	-	G 1/2	200	1.02	0.79	1.14	0.33	0.45	0.96	1.06
881-M24X1.5-200-MS-M	M 24 x 1.5	-	200	1.14	0.79	1.28	0.31	0.47	0.98	1.18
881-G3/4-200-MS-M	-	G 3/4	200	1.26	0.79	1.34	0.31	0.47	0.98	1.26
881-M26X1.5-200-MS-M	M 26 x 1.5	-	200	1.26	0.79	1.34	0.31	0.47	0.98	1.26
881-M30X1.5-200-MS-M	M 30 x 1.5	-	200	1.42	0.79	1.54	0.31	0.47	0.98	1.42
881-G1-200-MS-M	-	G 1	200	1.54	0.79	1.73	0.31	0.47	0.98	1.61

Part Number

d₁
Fine thread

Pipe thread

Opening pressure
in mbar ±20%

d₂

d₃

e ≈

l₁

l₂

l₃

A/F

881-M12X1.5-200-MS-M

M 12 x 1.5

200

0.71

0.79

0.93

0.33

0.45

0.96

0.87

881-G1/4-200-MS-M

G 1/4

200

0.79

0.93

0.33

0.45

0.96

0.87

881-M14X1.5-200-MS-M

M 14 x 1.5

200

0.79

0.93

0.33

0.45

0.96

0.87

881-M16X1.5-200-MS-M

M 16 x 1.5

200

0.87

0.79

0.93

0.33

0.45

0.96

0.87

881-G3/8-200-MS-M

G 3/8

200

0.91

0.79

0.93

0.33

0.45

0.96

0.87

881-M18X1.5-200-MS-M

M 18 x 1.5

200

0.94

0.79

0.93

0.33

0.45

0.96

0.87

881-M20X1.5-200-MS-M

M 20 x 1.5

200

1.02

0.79

1.14

0.33

0.45

0.96

1.06

881-M22X1.5-200-MS-M

M 22 x 1.5

200

1.06

0.79

1.14

0.33

0.45

0.96

1.06

881-G1/2-200-MS-M

G 1/2

200

1.02

0.79

1.14

0.33

0.45

0.96

1.06

881-M24X1.5-200-MS-M

M 24 x 1.5

200

1.14

0.79

1.28

0.31

0.47

0.98

1.18

881-G3/4-200-MS-M

G 3/4

200

1.26

0.79

1.34

0.31

0.47

0.98

1.26

881-M26X1.5-200-MS-M

M 26 x 1.5

200

1.26

0.79

1.34

0.31

0.47

0.98

1.26

881-M30X1.5-200-MS-M

M 30 x 1.5

200

1.42

0.79

1.54

0.31

0.47

0.98

1.42

881-G1-200-MS-M

G 1

200

1.54

0.79

1.73

0.31

0.47

0.98

1.61

d₁ Fine thread	Pipe thread	Opening pressure in mbar ±20%	d₂	d₃	e ≈	l₁	l₂	l₃	A/F

M 12 x 1.5	-	200	0.71	0.79	0.93	0.33	0.45	0.96	0.87
M 14 x 1.5	G 1/4	200	0.79	0.79	0.93	0.33	0.45	0.96	0.87
M 16 x 1.5	-	200	0.87	0.79	0.93	0.33	0.45	0.96	0.87
-	G 3/8	200	0.91	0.79	0.93	0.33	0.45	0.96	0.87
M 18 x 1.5	-	200	0.94	0.79	0.93	0.33	0.45	0.96	0.87
M 20 x 1.5	-	200	1.02	0.79	1.14	0.33	0.45	0.96	1.06
M 22 x 1.5	-	200	1.06	0.79	1.14	0.33	0.45	0.96	1.06
-	G 1/2	200	1.02	0.79	1.14	0.33	0.45	0.96	1.06
M 24 x 1.5	-	200	1.14	0.79	1.28	0.31	0.47	0.98	1.18
M 26 x 1.5	G 3/4	200	1.26	0.79	1.34	0.31	0.47	0.98	1.26
M 30 x 1.5	-	200	1.42	0.79	1.54	0.31	0.47	0.98	1.42
-	G 1	200	1.54	0.79	1.73	0.31	0.47	0.98	1.61

d₁
Fine thread

Pipe thread

Opening pressure
in mbar ±20%

d₂

d₃

e ≈

l₁

l₂

l₃

A/F

M 12 x 1.5

200

0.71

0.79

0.93

0.33

0.45

0.96

0.87

M 14 x 1.5

G 1/4

200

0.79

0.93

0.33

0.45

0.96

0.87

M 16 x 1.5

200

0.87

0.79

0.93

0.33

0.45

0.96

0.87

G 3/8

200

0.91

0.79

0.93

0.33

0.45

0.96

0.87

M 18 x 1.5

200

0.94

0.79

0.93

0.33

0.45

0.96

0.87

M 20 x 1.5

200

1.02

0.79

1.14

0.33

0.45

0.96

1.06

M 22 x 1.5

200

1.06

0.79

1.14

0.33

0.45

0.96

1.06

G 1/2

200

1.02

0.79

1.14

0.33

0.45

0.96

1.06

M 24 x 1.5

200

1.14

0.79

1.28

0.31

0.47

0.98

1.18

M 26 x 1.5

G 3/4

200

1.26

0.79

1.34

0.31

0.47

0.98

1.26

M 30 x 1.5

200

1.42

0.79

1.54

0.31

0.47

0.98

1.42

G 1

200

1.54

0.79

1.73

0.31

0.47

0.98

1.61

Selected Part

Part Number

Total US Dollars (net)

$24.77

In Stock: 35

In Stock

Quantity

Please note our quantity discounts (US Dollars).

Min	Max	Price
1	49	$24.77
50	99	$22.70
100	249	$20.64
≥ 250		$18.58

Prop 65: Not compliant

WARNING:
Cancer and Reproductive Harm - www.P65Warnings.ca.gov

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: 0.086 lbs

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