N510024582AA (VQ1000-FPG-C6M5) Double Check Block | Original New Panasonic SMT Spare Part Product Overview N510024582AA (VQ1000-FPG-C6M5) Double Check Block, also known as Pneumatic Holding Valve, is a pneumatic accessory from the VQ1000 series. This dedicated spare part for Panasonic SMT machines functions as an Air Holding Valve or Pneumatic holding block within the SMT pneumatic valve block category. Fitted on the rear pipeline of the machine's pneumatic circuit, it