DAS546633AA is a Flow Cap accessory designed to complement the VQ600 Series pellistor gas detection head for hazardous area applications. Constructed from 316 stainless steel, this cap enables the VQ600 to be used in applications requiring permanent aspiration with pumped or pressurized sample delivery. The cap features two 1/8" BSP taper thread ports for sample inlet and outlet, with nominal dimensions of 66.00 mm length and 40.00 ± 0.16 mm and 50.00 ± 0.16 mm port spacing. This accessory is ideal for pumped sampling analysis systems and detection installations where continuous or periodic gas monitoring is required, providing a robust interface for connecting flexible tubing to the sensor head.