The Bürkert Tank Bottom Valve is designed for control of ultra pure, sterile, aggressiveor abrasive fluids. Enables especially optimal filling and emptying vessels with less dead leg.The valve body consists of a block with no weldseam, machined out of high quality stainless steel. The Tank Bottom Valve has two welding bevels to ease the welding and valve positioning operations. The high quality diaphragms separate hermetically critical fluids from the actuator. The pneumatic actuator can be controlled by pneumatic pilot valves (single pilot valves, valve islands and control heads). Control function A, normally closed by spring return.