Note:
- D4 +/-0,5 Form A: the max. pressure while venting is 50 mbar (0.73 psi) with a max. air volume of 500 l/min. The air 6 filter prevents dirt entering. A L L3 1 Form B: contains a plastic vent and aeration valve. The opening pressure while venting is 0.35 bar (+/-0.05 bar). The opening pressure while aerating is 0.05 bar. This form is suitable for applications where the airflow needs to be controlled in both directions. D6 D5 D B 1 L L3 D6 D5 D

Dimensions / Technical Data:
- Form: B.
- Version 2: vent valve.
- D: 70 mm.
- D1: 46 mm.
- D2: 83 mm.
- D3: 58 mm.
- D4: 72 mm.
- D5: 60 mm.
- D6: 37 mm.
- L: 41 mm.
- L1: 94 mm.
- L2: 115 mm.
- L3: 14 mm.