Siemens 333-072 Replacement Diaphragm for Number 4 Pneumatic Damper Actuators (5 Pack)

The Siemens 333-072 is a replacement diaphragm specifically designed for Number 4 pneumatic damper actuators with discontinued cast aluminum housings. This part is essential for maintaining legacy Siemens actuator systems, particularly those with part numbers lower than or equal to 331-2885.

Key Features:

• Compatible with Number 4 (No. 4) pneumatic damper actuators featuring discontinued cast aluminum housings
• Replacement part for legacy 331 series actuators (part number 331-2885 and earlier)
• Package of 5 diaphragms for convenient stock and multiple repairs
• Genuine Siemens Building Technology replacement component
• Designed for reliable pneumatic actuator operation in HVAC damper control applications

This diaphragm is a critical wear component that enables proper pneumatic operation of legacy Siemens damper actuators used in commercial building automation systems. The 5-pack quantity makes it ideal for facility maintenance departments and HVAC service contractors managing multiple buildings with older Siemens control systems.