Electropneumatic positioner

An electro-pneumatic positioner, comprising:

• a pneumatically driven dual-chamber actuator;
• a pneumatic main air intake valve coupled to a pressure pipe, the pressure pipe leading to a chamber of the actuator;
• a pneumatic main air discharge valve coupled to the pressure pipe;
• a further pneumatic main air intake valve coupled to a further pressure pipe, the further pressure pipe connecting to a further chamber of the actuator;
• a further pneumatic main air discharge valve coupled to the further pressure pipe;
• a first actuating element cooperating with the pneumatic main air intake valve, the first actuating element being formed by a control valve, the control valve acting upon a reversing valve which is a component of the pneumatic main air intake valve;
• a second actuating element cooperating with the further pneumatic main air intake valve, the second actuating element being formed by a further control valve, the further control valve acting upon a further reversing valve;
• a third actuating element cooperating with the pneumatic main air discharge valve, the third actuating element being formed by a feed pipe, the feed pipe connecting a pressurized side of the pneumatic main air discharge valve to an interior side of the further reversing valve which is a component of the further pneumatic main air intake valve;
• and
• a fourth actuating element cooperating with the further pneumatic main air discharge valve, the fourth actuating element being formed by a further feed pipe, the further feed pipe connecting from a further pressurized side of the further pneumatic main air discharge valve to the reversing valve.