Agilent Varian by VAT aluminum block valves of choice for medium- and high-vacuum requirements. These low-cost, compact, and reliable valves are used for applications in semiconductor manufacturing, R&D, and industrial vacuum systems. Varian’s block valves will reliably achieve 300,000 cycles or more in most applications. This block valve is inline and has KF16 inlet outlet size flanges and has a hand operated knob. Varian Part Number X3202-60063.