The externally controlled angle seat valve consists of a pneumatically actuated piston drive and a 2-way valve housing. Depending on the ambient temperature, the drive is available in two different materials, PA and PPS. The proven self-adjusting spindle seal ensures high tightness. The flow-optimized 2/2-way valve housings made of brass or precision cast stainless steel allow for high flow rates. These maintenance-free and robust valves can be retrofitted with a comprehensive range of accessories for position indication, stroke limitation, or manual emergency operation.