vacuum breaker 59  G 3/4 A
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KVS-value 6 m3/h, temperature -20 bis +40°C
preadjusted set pressure 0,1 bar (differential pressure to atmosphere)
body PN 16 made of CrNiMo-steel 
BSP male connection G 3/4 A
valve sealing with a ball made of NBR
body sealing made of EPDM  
with an internal spring
with a protection cover
all CrNiMo-steel construction