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-Minimised pressure losses as filter cross section is larger than the pipe cross section -High variability due to large filter fabric range of 85 to 2000 µm -One-piece valve body
-Gas-tight design available as option (option SR-B, SRV-B) -Can also be used as an aeration or vacuum check valve (option SRV, SRV-B, SRZ-V) -Wide variety of check valves available