|FD||with filter and double valve (only for d1=81)|
|d3||d4||d5||d6||l1||l2||l3||l4||l5 ≈||l6||A/F||Opening pressure|
|47||G 1/4||1/4 NPT||BA||7||52||40||27||10||5||51||35||13||66||17||-|
|81||G 3/4||3/4 NPT||BA||17||83||72||49||16||12||70||42||17||80||30||350|
Filter combination produces no result.
Breather caps GN 764 with double valve are normally used if the oil container is under pressure and if outside air has to flow back in to compensate for the vacuum caused by falling oil level.
Air flow rate [l/min] in reliance on the pressure
Pressure curve Δp [mbar] in the container as factor of the air flow rate [l/min.] at a valve opening pressure of 350 mbar (Type with filter and double valve).
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