Type A - Low design
Type B - High design, with Stainless Steel cap
GN883 Breather or Exhaust Valves
Once the opening pressure given in the table is exceeded, these breather valves, GN 883, will vent into a container and so protect against excessive inside container pressure. They also feature highly compact dimensions.
A coding (Type A) or a colour ring (Type B) in yellow (20 - 80 mbar) or green (160 - 240 mbar) indicates the different opening pressure ratings.
The simple function principle (pressure spring / ball) ensures long and trouble-free use of the valve. The installation position is vertical to the top.
Valve body - Brass MS
Ball - Steel ST, AISI 5210
Spring - Stainless Steel NI, AISI 301
Sealing - DIN7603 A, Soft iron 1.0338, (for d1 = M10 x 1: PA6)
Breather (Type B) - Stainless Steel NI, AISI 304
Temperature resistant from -30 oC to +100 oC